The Form S-3ASR Files dataset is a collection of automatic shelf registration statements filed on EDGAR under the Securities Act of 1933 by well-known seasoned issuers (WKSIs). One record is one complete EDGAR submission of Form S-3ASR — the primary registration statement, every legality opinion, auditor consent, indenture form, trustee Form T-1, power of attorney, awareness letter, and inline-XBRL filing-fee exhibit the issuer filed under a single accession number, together with a metadata.json derived from the EDGAR submission header. The form was created by the SEC's 2005 Securities Offering Reform (Release No. 33-8591) and has been in service since December 1, 2005, which is also the earliest date represented in the dataset. Records are delivered as per-accession folders packaged inside monthly ZIP containers keyed YYYY/YYYY-MM.zip, with documents preserved as HTML (with inline-XBRL XHTML for the fee exhibit), JSON, TXT, and occasional PDF attachments.
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The dataset captures the original automatic shelf registration statement filed on Form S-3ASR by issuers that qualify as WKSIs under Rule 405 of the Securities Act. The form is Form S-3 used in automatic-shelf mode: it carries the same disclosure architecture, the same Item 12 incorporation-by-reference regime, and the same Part II Item-by-Item registration content as S-3. Its defining feature is procedural rather than documentary — an S-3ASR becomes effective immediately upon filing pursuant to Rule 462(e), without staff review and without a separate effectiveness order. As a consequence, metadata.json -> effectivenessDate equals the date component of filedAt on every record. The automatic-shelf mechanism also allows registration of an unspecified amount of securities under Rule 415(a)(1)(x) and Rule 415(a)(5), with fees payable on a "pay-as-you-go" basis at takedown under Rule 456(b) and Rule 457(r).
Substantively, each filing comprises a base prospectus, the Part II information required by Form S-3, and the mandatory exhibits enumerated by Item 601 of Regulation S-K. Because the S-3ASR is a shelf registration, the base prospectus describes only the classes of securities being registered and the general terms on which they may be offered; specific takedown terms (price, tranche size, underwriters, indenture supplements) are not in the record and are filed afterwards as prospectus supplements under Rule 424(b) under separate accession numbers. Time coverage runs from December 1, 2005 forward; the dataset has no pre-2005 era because no equivalent form existed before Securities Offering Reform.
Records are distributed in monthly ZIP containers (form-s3asr-files/YYYY/YYYY-MM.zip). The file types found inside an accession folder are HTML, JSON, TXT, and PDF; in practice modern S-3ASR submissions are overwhelmingly HTML (with the EX-FILING FEES exhibit delivered as inline-XHTML) plus the single metadata.json.
One record is one complete EDGAR submission of Form S-3ASR, identified by its 18-digit accession number. The record materialises as a single folder whose name is the accession number with the dashes stripped (for example 000119312525220709). Inside that folder sit every document the registrant transmitted to EDGAR under that accession, plus a metadata.json file that mirrors the EDGAR submission header. The dataset packages those per-accession folders into monthly ZIP containers keyed YYYY/YYYY-MM.zip, so a record is retrievable by accession number once the relevant monthly archive has been unpacked.
The record is filing-grained, not document-grained: every exhibit, legality opinion, consent, indenture form, trustee Form T-1, power of attorney, awareness letter, and filing-fee table the issuer filed under that accession travels together inside the same folder. A multi-issuer shelf with subsidiary guarantors and a stack of letter-suffixed opinions and T-1s is still one record. The accession number, surfaced both as the folder name (digits only) and as metadata.json -> accessionNo in its canonical dashed form (0001193125-25-220709), is the only stable cross-reference key.
A record lives at one path inside one monthly ZIP (form-s3asr-files/2025/2025-09.zip). The archive expands to a single YYYY-MM/ directory; each immediate child of that directory is one accession folder. The accession folder is flat (no nested subdirectories) and contains:
metadata.json,Image attachments declared as GRAPHIC in the EDGAR submission, and the raw 0001...txt full-submission text blob referenced by metadata.json -> linkToTxt, are not extracted into the folder; they remain referenced only by URL.
Filenames inside a folder are filer-agent-specific and carry no canonical meaning. Common prefixes include tm (Toppan Merrill), d (Donnelley Financial), ny (Toppan Merrill NY), ea (EdgarAgents), and issuer-ticker prefixes such as hcc- or wu. Stylistic separators in exhibit basenames vary freely: ex5-1.htm, ex5_1.htm, ex51.htm, ex-5_1.htm, and dex51.htm are all the Exhibit 5.1 legality opinion. The authoritative role of each file is given not by filename but by documentFormatFiles[].type in metadata.json and by the <TYPE> tag inside the SGML document wrapper at the top of each HTML file.
metadata.json blockEvery accession folder contains exactly one metadata.json, derived from the EDGAR SGML submission header. Its top-level fields are:
formType — the literal string "S-3ASR".accessionNo — canonical dashed accession number.filedAt — ISO 8601 timestamp with timezone offset, recording the moment EDGAR accepted the submission.effectivenessDate — ISO date of effectiveness; equals the filing date because S-3ASR is automatically effective under Rule 462(e).description — the EDGAR form description, "Form S-3ASR - Automatic shelf registration statement of securities of well-known seasoned issuers".linkToFilingDetails — absolute URL to the primary S-3ASR HTML on sec.gov.linkToTxt — URL of the full SGML submission text blob.linkToHtml — URL of the EDGAR -index.htm filing index page.linkToXbrl — empty string for S-3ASR; the form carries no financial-statement XBRL instance, only the inline-XBRL fee-disclosure exhibit referenced elsewhere.id — 32-character hex internal record identifier.seriesAndClassesContractsInformation — present but empty array on S-3ASR records (this field carries content only for investment-company filings).documentFormatFiles — ordered list describing every document EDGAR received in the submission (see below).dataFiles — ancillary machine-readable files, typically the extracted XBRL XML instance behind the inline-XBRL filing-fee exhibit.entities — one element per registrant (filer, co-registrants, subsidiary guarantors).documentFormatFiles[]Each element describes one document by:
sequence — string holding the EDGAR sequence number ("1" for the primary, ascending thereafter); the final row describing the complete-submission .txt blob uses a single space as its sequence value.size — byte count, as a string.documentUrl — absolute EDGAR URL of the form https://www.sec.gov/Archives/edgar/data/<cik>/<accessionDigits>/<filename>. Inline-XBRL documents (notably EX-FILING FEES) are linked through the /ix?doc= viewer.description — human label as filed ("S-3ASR", "EXHIBIT 5.1", "EX-FILING FEES", "GRAPHIC", "Complete submission text file").type — EDGAR document type code, drawn from a tightly conventional set: S-3ASR, EX-4.x, EX-5.x, EX-15.1, EX-23.x, EX-24.x, EX-25.x, EX-FILING FEES (equivalently EX-107), GRAPHIC, plus a trailing space-typed row for the full-submission text file.The sequence field is the authoritative ordering for documents within a submission; the folder listing is not lexically meaningful.
dataFiles[]When present, this array contains the extracted XBRL XML instance behind the inline-XBRL filing-fee exhibit. A representative element carries description = "EXTRACTED XBRL INSTANCE DOCUMENT", type = "XML", and a documentUrl pointing at the *_htm.xml counterpart of the fee exhibit. The XML itself is referenced only by URL and is not copied into the folder.
entities[]One entry per registrant. For a single-issuer shelf there is one entity with companyName ending in (Filer); for multi-registrant shelves additional entries appear with role tags such as (Co-Registrant) or (Subsidiary Guarantor) baked into the companyName string. Per-entity fields:
cik — bare digits, no zero-pad.fileNo — the assigned 333-XXXXXX Securities Act file number; future post-effective amendments and takedown prospectus supplements reference this same file number.irsNo — EIN.type — form code in the entity's context, "S-3ASR".act — the statute, encoded "33" for the Securities Act of 1933.stateOfIncorporation — two-letter state or jurisdiction code.fiscalYearEnd — MMDD.sic — SIC code and label joined into a single string; HTML entities such as & are left un-decoded.filmNo — the EDGAR film number assigned at acceptance.tickers — array of ticker symbols associated with the issuer.A single record carries a primary registration statement plus a tightly conventional bundle of mandatory legal and accounting exhibits, all enumerated under Item 601 of Regulation S-K.
S-3ASR (sequence 1, always present). The primary registration statement / base prospectus. Internally the document opens with the EDGAR facing page (registrant name, state of incorporation, IRS number, principal-executive-office address, agent for service, telephone, and the WKSI / large-accelerated / accelerated / smaller-reporting / emerging-growth status check boxes). It continues with the prospectus body: an "About This Prospectus" preamble identifying the document as a base prospectus to be supplemented by one or more Rule 424(b) supplements per takedown; a "Where You Can Find More Information" section; an "Information Incorporated by Reference" section listing the issuer's most recent Form 10-K, intervening Forms 10-Q and 8-K, and any Section 13(a), Section 13(c), 14, or Section 15(d) reports filed after the date of the registration statement and prior to termination of the offering; a "Risk Factors" pointer that defers to incorporated-by-reference periodic reports; a description-of-securities section keyed to the charter and bylaws and covering whichever of common stock, preferred stock, debt securities, warrants, units, depositary shares, subscription rights, purchase contracts, and guarantees the shelf registers; a "Use of Proceeds" placeholder (typically reserved to "general corporate purposes" with detail to be specified at takedown); a "Plan of Distribution" listing permitted offering mechanisms (underwriters, dealers, agents, at-the-market programs, direct sales); "Legal Matters" naming the firm whose opinion appears as EX-5; and "Experts" naming the auditors whose consents appear as EX-23. The document then carries Part II of Form S-3 (Item 14 indemnification of directors and officers, Item 15 recent sales of unregistered securities where applicable, Item 16 exhibits index, Item 17 undertakings — including the standard Rule 415 undertakings and the WKSI-specific takedown undertakings), followed by signature pages executed by the principal executive officer, principal financial officer, principal accounting officer, and at least a majority of the board of directors, the latter frequently signed through powers of attorney filed as EX-24.
EX-4.x (securities instruments). Forms of indenture, supplemental indentures, deposit agreements, warrant agreements, certificates of designation, subscription-rights agreements, and similar instruments. Multiple entries are common (EX-4.x listings such as EX-4.1, EX-4.2, ... into double digits) when the shelf covers several security classes or layers of senior, subordinated, and convertible debt.
EX-5.x (legality opinions). Opinion of counsel as to the validity of the securities being registered. Multiple opinions appear when state-specific counsel is required (for example Delaware counsel plus general corporate counsel, or Maryland counsel for a REIT). Letter-suffixed numbering (ex5-a1, ex5-b1, ...) is used by multi-registrant filings to bind each opinion to a specific co-issuer or guarantor.
EX-15.1 (awareness letter). Independent auditor's awareness letter relating to unaudited interim financial information incorporated by reference. Optional and less common.
EX-23.x (consents). Written consents of every independent registered public accounting firm and other named expert whose report, opinion, or valuation is incorporated by reference. Two or three are typical (current auditor, predecessor auditor following an audit-firm change, and an acquired-business auditor where the issuer has incorporated audited financials of a recently acquired entity).
EX-24.x (powers of attorney). Authorise named officers to sign post-effective amendments without re-execution by the full board. Often a single document carrying many signature blocks, occasionally split across multiple files.
EX-25.x (Form T-1 statement of eligibility of trustee). Required when debt securities are being registered, filed once per indenture trustee. Multi-issuer shelves use letter suffixes (ex25-a1, ex25-b1, ...) to thread each T-1 to a specific guarantor or issuer; numeric suffixes within a letter distinguish senior, subordinated, and convertible indentures of the same entity.
EX-FILING FEES (equivalently EX-107). The Calculation of Filing Fee Tables exhibit required by Item 601(b)(107) of Regulation S-K, delivered as inline XBRL (see below). The filename is typically *_ex-filingfees.htm, *_exfees.htm, or ex107.htm. For a pay-as-you-go WKSI shelf the table typically registers an unspecified aggregate offering amount under Rule 456(b) / 457(r); when fees are paid up front, the table itemises each class of newly registered security, the proposed maximum aggregate offering price, and the registration fee, and accounts for any offsetting fees taken from unsold securities under Rule 415(a)(6) or paid on prior registration statements under Rule 457(p), as well as any combined-prospectus carryforward.
GRAPHIC. Image attachments (logos, signature images, charts). Referenced from the prospectus HTML through <IMG SRC="..."> and listed in documentFormatFiles[], but not extracted to disk in this dataset; only the URL remains as the handle.
Letter-suffixed exhibit numbering (ex5-a1, ex23-c1, ex25-d2) is the clearest in-record signal of a multi-registrant shelf: each letter typically corresponds to one entity in entities[], and the suffixed numerals enumerate that entity's variants. Conversely, the absence of letter suffixes coupled with a single entry in entities[] indicates a straightforward single-issuer shelf.
Every HTML attachment ships wrapped in the EDGAR SGML <DOCUMENT> envelope rather than as bare HTML. The wrapper is the mechanism EDGAR uses to round-trip a multi-document submission as one stream. A typical header reads:
1
<DOCUMENT>
2
<TYPE>S-3ASR
3
<SEQUENCE>1
4
<FILENAME>d23061ds3asr.htm
5
<DESCRIPTION>S-3ASR
6
<TEXT>
7
<HTML>...</HTML>
8
</TEXT>
9
</DOCUMENT>
The five header lines (<TYPE>, <SEQUENCE>, <FILENAME>, <DESCRIPTION>, opening <TEXT>) and the matching </TEXT></DOCUMENT> closers bracket the inner HTML body. <TYPE> mirrors documentFormatFiles[].type; <SEQUENCE> mirrors the same element's sequence; <FILENAME> is the on-disk basename; <DESCRIPTION> mirrors description. A consumer that strips those six wrapper lines from the top and the trailing two lines from the bottom obtains parseable HTML for the document body.
The filing-fee exhibit is the structural exception to the wrapper convention. It is delivered as inline-XBRL XHTML rather than wrapped in <DOCUMENT>. Its root element declares the inline-XBRL namespace xmlns:ix="http://www.xbrl.org/2013/inlineXBRL" and the Filing Fee Disclosure taxonomy namespace xmlns:ffd="http://xbrl.sec.gov/ffd/YYYY", and the substantive fee values are encoded inside <ix:nonNumeric> and <ix:nonFraction> tags bearing ffd: and dei: (Document and Entity Information) concept names. The visible HTML rendering shows the same table a human reader sees on EDGAR's /ix?doc= viewer; the inline-XBRL facts are the machine-readable layer beneath that rendering. The corresponding machine-readable XML instance (*_htm.xml) is referenced from metadata.json -> dataFiles[] as an EXTRACTED XBRL INSTANCE DOCUMENT of type XML, but the XML itself is not copied into the accession folder; the inline-XBRL HTML is the only on-disk artifact of the fee exhibit.
This is the only XBRL data carried by an S-3ASR record. The form does not require a financial-statement XBRL instance because the issuer's financial statements are incorporated by reference from the underlying Form 10-K and Forms 10-Q rather than restated in the registration statement.
Each record packages, on disk: the primary S-3ASR HTML document; every HTML exhibit (legality opinions, auditor consents, awareness letters, indenture and other Item 4 instruments, powers of attorney, Form T-1 trustee statements, inline-XBRL fee exhibit); any non-HTML textual or PDF exhibit the registrant attached; and the metadata.json describing the submission. Each HTML document retains its EDGAR SGML wrapper, preserving the <TYPE>, <SEQUENCE>, <FILENAME>, and <DESCRIPTION> tags as written by EDGAR. Every registrant's identifying header data (CIK, Securities Act file number, IRS number, SIC code, state of incorporation, fiscal year end, tickers, film number) is preserved in entities[].
Image attachments declared GRAPHIC in EDGAR (logos, signature images, decorative charts) are not unpacked to disk; they are referenced only by documentUrl in documentFormatFiles[]. The full-submission .txt blob (linkToTxt, normally the 000...txt file) and the extracted XBRL XML behind the fee exhibit (dataFiles[].documentUrl) are likewise referenced by URL only and are not copied into the folder. Post-effective amendments (Form S-3ASR/A), prospectus supplements filed under Rule 424(b), free-writing prospectuses (FWP), and the actual takedown materials live under separate EDGAR accession numbers and therefore in separate records under their own form-type datasets — not inside this S-3ASR record.
Form S-3ASR has existed only since December 1, 2005, so the dataset's history is comparatively short and the form's substantive Item structure has been stable. The most material changes across the dataset's lifetime are:
Original adoption (effective December 1, 2005). The 2005 Securities Offering Reform release (Release No. 33-8591) created the WKSI category and the automatic shelf registration mechanism. From the dataset's earliest records onward, S-3ASR submissions carried the base prospectus, the Item 12 incorporation-by-reference machinery, and the Item 601 exhibit roster. Earliest records use the legacy filing-fee calculation table embedded as a static HTML or plain-text exhibit (or as part of Part II) rather than a separately tagged inline-XBRL exhibit.
WKSI eligibility refinements. Subsequent SEC actions have adjusted the WKSI definition in Rule 405 (notably the integration of waiver practice and clarifications around ineligible issuers), affecting cover-page legends and eligibility representations but not the document layout itself.
Fee-disclosure rule changes (Release No. 33-10997, October 2021; compliance phased in through mid-2022). The SEC amended Item 601(b)(107) of Regulation S-K to require filers to submit the filing-fee table as a separate exhibit, type EX-FILING FEES (also EX-107), and to tag the fee data using inline XBRL with the Filing Fee Disclosure (ffd:) taxonomy. From 2022 onward, records consistently carry the inline-XBRL EX-FILING FEES exhibit and the corresponding dataFiles[] entry pointing to the extracted XBRL XML; pre-2022 records carry the fee calculation as a static table inside the registration statement or as a non-XBRL exhibit.
Broadening of the registered securities typology. Across the dataset's lifetime the set of registered security classes has broadened (depositary shares, units, contingent value rights, subsidiary guarantees, at-the-market sales facilities), and the EX-4.x cluster has correspondingly become richer in later years; the EX-5 / EX-23 / EX-24 / EX-25 backbone has been stable.
The S-3ASR form was introduced after EDGAR had already moved past ASCII as the dominant submission format, so the dataset has no pre-HTML era. Format evolution across the dataset's lifetime:
2005-2010 (HTML with occasional plain-text exhibits). Earliest records are HTML wrapped in the SGML <DOCUMENT> envelope, occasionally with plain-text fragments for ancillary exhibits. Encodings vary; styling is largely inline.
2010-2018 (HTML maturation). Filer-agent toolchains converge on richer HTML with embedded CSS, but the SGML wrapper and the <TYPE> / <SEQUENCE> / <FILENAME> / <DESCRIPTION> header conventions remain unchanged.
2022-present (inline-XBRL fee exhibit). Following the Item 601(b)(107) inline-XBRL fee-disclosure mandate, every record from 2022 onward carries an inline-XBRL XHTML EX-FILING FEES document alongside the conventionally wrapped HTML exhibits, and dataFiles[] consistently references the extracted XBRL XML.
Authoritative ordering is sequence, not folder listing. Files inside an accession folder are not lexically sorted into a meaningful order. Only metadata.json -> documentFormatFiles in array order and the <SEQUENCE> tag inside the SGML wrapper preserve the original submission ordering.
Filenames do not encode roles reliably. Use documentFormatFiles[].type (or equivalently the <TYPE> SGML tag) as the canonical identifier of an exhibit's role; filename conventions are filer-agent-specific and use varied separators.
effectivenessDate equals the filing date. This is the defining property of an automatic shelf registration by a WKSI under Rule 462(e) and is a useful sanity check when cross-referencing this dataset against other form-type datasets.
Letter-suffix exhibit numbering signals multi-registrant shelves. When you see ex5-a1, ex23-c1, ex25-d2 style filenames or types, expect multiple entries in entities[] with (Co-Registrant) or (Subsidiary Guarantor) role tags in companyName, and expect each letter to map to one of those entities.
Incorporation by reference is the substantive default. The prospectus body does not restate the issuer's financial statements, MD&A, or risk factors; it points to the most recent Form 10-K, intervening Forms 10-Q and 8-K, and future Section 13(a), 13(c), 14, or 15(d) reports filed prior to termination of the offering. Treat the record as a registration shell whose substantive financial disclosure lives in other accessions referenced by Exchange Act file number.
Pay-as-you-go fees on WKSI shelves. Records that elect Rule 456(b) / 457(r) treatment register an unspecified aggregate offering amount, and the EX-FILING FEES table will reflect deferred-fee semantics rather than dollar-denominated registered amounts; expect actual fee remittance to be reported on subsequent Rule 424 prospectus supplements rather than on the S-3ASR itself.
GRAPHIC and full-submission TXT files are referenced, not present. documentFormatFiles[] will list GRAPHIC entries and a final Complete submission text file row, but neither is unpacked to the folder; their documentUrl is the only handle.
HTML entities in metadata.json are not decoded. Strings such as sic (e.g. "5812 Retail-Eating Places") and several entity-level labels can contain & and similar entities verbatim; consumers should HTML-decode before display.
Post-effective activity lives elsewhere. Subsequent Rule 424(b)(2), Rule 424(b)(5), and Rule 424(b)(7) prospectus supplements, post-effective amendments (Form S-3ASR/A), and free-writing prospectuses (FWP) are filed under separate accession numbers and are not part of an S-3ASR record. The S-3ASR record captures only the original automatically effective registration statement.
Each record in the Form S-3ASR Files dataset is filed on EDGAR under the Securities Act of 1933 by an issuer that qualifies as a well-known seasoned issuer (WKSI) at the time of filing. The filer is the issuer of the registered securities; many filings also list co-registrants such as finance subsidiaries or guarantor operating subsidiaries. Form S-3ASR is not available to every public company — the registrant must meet the underlying Form S-3 eligibility requirements and additionally satisfy the WKSI test established by the SEC's 2005 Securities Offering Reform.
A registrant qualifies as a WKSI under Securities Act Rule 405 if, measured within 60 days of the determination date, it:
The filer population is therefore dominated by large-cap operating companies, large financial and insurance holding companies, and frequent debt issuers. Foreign private issuers that meet WKSI status file the analogous Form F-3ASR, not S-3ASR. Registered investment companies and BDCs register on Form N-2 and are outside this dataset.
A WKSI files an S-3ASR to put in place, replace, or expand a registered shelf from which it may issue securities on a delayed or continuous basis. Typical triggers:
Filing does not require an imminent offering. The S-3ASR establishes the shelf; actual takedowns are documented through prospectus supplements filed under Rule 424(b).
Form S-3ASR was created by the SEC's Securities Offering Reform, effective December 1, 2005. The governing provisions are:
The earliest possible S-3ASR filing on EDGAR is December 1, 2005. There is no pre-2005 equivalent; before Securities Offering Reform, all shelf registration statements were subject to potential staff review and required an effectiveness order.
The defining feature of Form S-3ASR is immediate effectiveness upon filing under Rule 462(e), without staff review, comment, or acceleration. This distinguishes S-3ASR from non-automatic Form S-3, which can be subject to review and requires the registration to be declared effective.
Once on file:
Loss of WKSI status during the shelf's life does not automatically terminate the registration, but the issuer must reassess eligibility at each Section 10(a)(3) update (typically the next Form 10-K) and may need to amend onto a non-automatic Form S-3 if it no longer qualifies. An issuer that becomes ineligible (Wells settlement, consent decree, lost timely-filer status) cannot file new S-3ASRs or conduct new takedowns off an existing one once a Section 10(a)(3) update is due; absence of S-3ASR activity during such periods is meaningful.
Form S-3ASR sits inside the Securities Act shelf-registration family used by WKSIs to pre-register securities for future takedowns. The most useful comparison targets are other Securities Act registration forms (S-3, S-1, S-4, S-3D), the foreign-issuer parallels (F-3ASR, F-3), the prospectus supplements that document actual takedowns (424B series), the Exchange Act periodic reports incorporated by reference (10-K, 10-Q), and the S-3ASR amendment chain itself.
The standard short-form shelf for seasoned issuers that meet S-3 eligibility but are not WKSIs. Content overlap is high: base prospectus, risk factors, plan of distribution, legal opinions, and indenture or underwriting exhibits, with heavy incorporation by reference. The distinctions are mechanical:
S-3 is the closest functional substitute for issuers just below the WKSI threshold.
The full-disclosure Securities Act registration used by IPO registrants and issuers ineligible for short-form treatment. Form S-1 must carry the full body of business, financial, and risk disclosure directly because non-S-3 issuers generally cannot incorporate Exchange Act reports by reference. S-3ASR is, by design, a thin shelf document that leans on the 10-K and 10-Q. S-1 filings are transaction-specific rather than shelf-style and are subject to staff review. The two forms capture different stages of an issuer's lifecycle and rarely substitute in research.
Mechanically identical to S-3ASR: immediate effectiveness, WKSI-only, pay-as-you-go fees. The difference is the filer population and the underlying reporting regime: F-3ASR is filed by foreign private issuers (FPIs) and incorporates 20-F annual reports and 6-K furnished reports rather than 10-K/10-Q. A complete WKSI shelf dataset across all issuer types requires combining S-3ASR and F-3ASR; this dataset covers only the domestic side.
The FPI parallel to S-3: short-form shelf with FPI-specific accommodations, subject to staff review, not automatic. Included here only because users sometimes conflate the foreign-issuer shelf forms with the domestic ones. No direct overlap with this dataset.
The 424B series (424B1 through 424B8) is filed under Rule 424 to document specific offerings executed against an effective shelf. The relationship is one-to-many: a single S-3ASR can support many 424B supplements across its three-year life. Content differs sharply:
Researchers studying registered capacity and shelf structure pull S-3ASR; those studying executed offerings and pricing pull 424B. Pairing the two yields a complete view from registration to issuance.
A narrow S-3 variant for securities issued exclusively under DRIPs. Like S-3ASR, it is effective on filing, but the resemblance ends there. Form S-3D registers a recurring small-share program directed at existing security holders; S-3ASR registers a deal-agnostic shelf supporting any combination of debt, equity, warrants, and other securities. The two are treated separately in capital-markets research.
Form S-4 registers securities issued in business combinations, mergers, and exchange offers. Both are Securities Act registrations filed by reporting companies, but S-4 is transaction-specific and discloses the target, the combined business, the merger agreement, fairness opinions, and any associated proxy materials. S-3ASR is forward-looking shelf capacity with no specific transaction attached. The two overlap in practice only when a WKSI uses a shelf to fund an S-4-registered transaction.
Exchange Act periodic reports, not Securities Act registrations, so they sit in a different regime. They are nonetheless tightly coupled to S-3ASR: the shelf prospectus incorporates the issuer's most recent 10-K, subsequent 10-Qs, and intervening 8-Ks by reference for the substantive disclosure (business, risk factors, MD&A, financial statements). The S-3ASR itself contributes only registration scope, plan of distribution, validity opinions, and offering-related exhibits. The datasets complement each other; neither substitutes.
Post-effective amendments update the registration statement for material developments, add selling securityholders, deregister unsold securities, or extend coverage. Pre-effective amendments are rare given immediate effectiveness. Content overlaps heavily with the original because amendments typically restate or update the base prospectus. The distinction is temporal and purpose-driven: the original S-3ASR captures the initial shelf, while the amendment chain tracks modifications across its three-year life. Users reconstructing the full state of a shelf need both.
The Form S-3ASR Files dataset captures a narrow slice of Securities Act activity: immediately effective shelf registrations filed by WKSIs from December 2005 onward. It is not a transaction dataset (424B), not a periodic-disclosure dataset (10-K/10-Q), not a non-automatic shelf dataset (S-3, F-3), not a foreign-issuer dataset (F-3ASR/F-3), not a deal-specific registration dataset (S-1, S-4), and not a plan-specific registration dataset (S-3D). Its closest substitute is S-3 for sub-WKSI issuers; its closest complement is the 424B series, which documents what is actually issued under each shelf.
Each S-3ASR filing bundles a base prospectus, incorporated 10-K/10-Q content, EX-5 validity opinions, EX-FILING FEES tables, and forms of underwriting agreement or indenture, which makes it useful to distinct professional audiences focused on different parts of the same accession-level record.
DCM and ECM bankers read the base prospectus' description of securities, plan-of-distribution language (firm-commitment, ATM, equity distribution agreements, forward sales), and the exhibit list of underwriting agreements and indentures to see what menu of takedowns a peer issuer preserved. The dataset supports pitch books, comparable-shelf analysis, and structuring recommendations for follow-ons, benchmark notes, and ATM programs.
Securities lawyers and disclosure counsel — issuer's counsel, underwriters' counsel, and in-house securities lawyers — benchmark drafting across WKSI shelves. They mine the description of securities, ERISA and tax disclosure, plan of distribution, EX-5 validity opinions, EX-8 tax opinions, auditor consents, and the EX-FILING FEES table for precedent research, form-of-prospectus drafting, opinion-letter benchmarking, and review of incorporation-by-reference practice.
Treasury and corporate finance teams at WKSIs use the dataset to plan shelf renewals. They compare peers' registered securities mix, plan-of-distribution flexibility, and exhibit packages to design a shelf that maximizes financing optionality, and consult EX-FILING FEES to model pay-as-you-go fee mechanics. Output: board memos justifying shelf design and refresh timing.
Equity and credit research analysts read S-3ASR filings as a forward indicator of issuance capacity. Credit analysts focus on the description of debt securities, covenant frameworks in the form-of-indenture exhibit, and ranking and subordination language to update credit and recovery models. Equity analysts watch for newly registered classes that signal acquisition financing, hybrid issuance, or dilution risk.
Fixed-income portfolio managers and new-issue desks track aggregate WKSI pipelines using filing dates, registered debt categories, and references to medium-term note programs. Joined with subsequent Rule 424(b) supplements, the S-3ASR base prospectus anchors a complete takedown history for new-issue calendars and supply forecasting by sector and rating cohort.
M&A and strategic finance advisors assess a potential acquirer's financing capacity from its shelf. They read the registered securities table, plan-of-distribution breadth, and incorporation-by-reference history to gauge how quickly the acquirer can fund a stock-and-cash bid or refinance bridge debt. An effective S-3ASR materially affects deal-certainty assessments.
Financial journalists use the dataset to detect shelf launches, refreshes, and unusual filings such as a new ATM program or a newly registered class. They pull the cover page, registered securities table, EX-FILING FEES aggregate dollar amount, and plan-of-distribution hints for breaking coverage and longer-form WKSI issuance trend pieces.
Compliance and regulatory staff at broker-dealers and issuers use the dataset to confirm WKSI status representations, fee-payment compliance, and adherence to the immediate-effectiveness regime under Rule 462(e). Before agreeing to act as agent on a takedown, underwriting-committee staff verify the shelf is current and pull the EX-5 opinion and EX-FILING FEES record into the deal file.
Academic and policy researchers studying WKSI eligibility, the 2005 Securities Offering Reform, and shelf-registration economics build longitudinal panels from December 2005 forward. They code prospectus features (security types, distribution methods) and merge with secondary-market data to study cost-of-capital, timing, and issuance-behavior effects.
ML and data-engineering teams ingest the full prospectus text, exhibits, and metadata to train extraction models for risk factors, description of securities, and plan of distribution, and to parse EX-FILING FEES tables for registered amounts and fee calculations. The dataset supports RAG systems for securities-law Q&A, named-entity extraction for trustees and distribution agents, and features for issuance-prediction models.
The Form S-3ASR Files dataset supports a small set of concrete workflows anchored on specific record artifacts: the base prospectus, EX-4 indenture and securities-instrument forms, EX-5 legality opinions, EX-23 auditor consents, EX-25 trustee Form T-1 statements, the inline-XBRL EX-FILING FEES exhibit, and the metadata.json registrant block.
Peer-shelf design and pitch-book benchmarking. Pull the base prospectus' description-of-securities and plan-of-distribution sections across a peer cohort to compare which security classes (debt, preferred, common, warrants, units, depositary shares, subscription rights, purchase contracts, guarantees) and distribution mechanics (firm commitment, ATM, equity distribution agreements, forward sales, agents) each WKSI preserved. The output feeds DCM/ECM pitch books and treasury memos that justify a chosen shelf scope at refresh time.
Pay-as-you-go fee modelling from the inline-XBRL fee exhibit. Parse the EX-FILING FEES (EX-107) inline-XBRL facts (the ffd: taxonomy values inside <ix:nonFraction> tags) together with the extracted XML referenced in dataFiles[] to extract registered amounts, Rule 456(b)/457(r) deferred-fee elections, Rule 415(a)(6) carryforwards, and Rule 457(p) fee offsets. The result is a structured fee table that feeds compliance fee reconciliation and academic studies of WKSI fee economics.
Trustee, counsel, and auditor mapping. Use the EX-5.x legality opinions, EX-23.x consents, and EX-25.x Form T-1 statements (together with their letter-suffix numbering and the (Co-Registrant) / (Subsidiary Guarantor) tags in entities[]) to build a directed graph from issuer to outside counsel, audit firm, and indenture trustee. The output supports league-table construction for shelf advisors, conflict checks for new mandates, and audit-firm-change detection where two EX-23 entries appear together.
Covenant and ranking research on forms of indenture. Read the EX-4.x form-of-indenture and supplemental-indenture exhibits across a peer cohort to extract covenant packages, subordination language, guarantee structures, and event-of-default triggers as they exist at shelf level (before deal-specific overlays in subsequent 424B supplements). Credit analysts and recovery modellers use this as a baseline against which 424B takedowns are measured.
Shelf-to-takedown linking for issuance and supply analytics. Use entities[].fileNo (the 333-XXXXXX Securities Act file number) and the issuer CIK to join each S-3ASR base prospectus to the chain of Rule 424(b) prospectus supplements filed against it. Fixed-income desks build new-issue calendars and supply forecasts from this join; equity-capital-markets teams reconstruct ATM and follow-on cadence by sector and rating cohort.
Acquirer financing-capacity assessment in M&A. For a potential acquirer, read its current S-3ASR description-of-securities, plan-of-distribution menu, and registered-class mix to gauge how quickly it can fund a stock-and-cash bid or refinance bridge debt without further SEC review. Cross-reference the filedAt date and the three-year shelf life to confirm the shelf is current. The output is a deal-certainty input for fairness opinions and bidder profiles.
Training data for prospectus and exhibit extraction models. Use the SGML-wrapped HTML documents (<TYPE> tags identify role; <SEQUENCE> preserves submission order) as a labelled corpus for fine-tuning extractors over risk-factor pointers, description-of-securities sections, plan-of-distribution clauses, and EX-5 opinion language. The inline-XBRL fee tables provide a second, machine-tagged corpus for structured-table extraction benchmarks, and entities[] supplies clean named-entity labels for issuer, co-registrant, and guarantor recognition.
The Form S-3ASR Files dataset is available through three access methods: a JSON index endpoint for programmatic discovery, a full archive download, and per-container downloads organized by year and month.
Dataset Index JSON API: https://api.sec-api.io/datasets/form-s3asr-files.json
This endpoint returns dataset-level metadata along with the full list of container files. Each container entry includes its size, record count, last updated timestamp, and download URL. Use this endpoint to monitor which containers were updated in the most recent refresh run and to selectively download only the containers that changed. This endpoint does not require an API key.
Example response:
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{
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"datasetId": "1f13365b-9ae0-6905-a4e7-fff0d6517ad4",
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"datasetDownloadUrl": "https://api.sec-api.io/datasets/form-s3asr-files.zip",
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"name": "Form S-3ASR Files Dataset",
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"updatedAt": "2026-05-16T03:03:25.800Z",
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"earliestSampleDate": "2005-12-01",
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"totalRecords": 70317,
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"totalSize": 1093336439,
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"formTypes": ["S-3ASR"],
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"containerFormat": "ZIP",
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"fileTypes": ["HTML", "JSON", "TXT", "PDF"],
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"containers": [
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{
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"downloadUrl": "https://api.sec-api.io/datasets/form-s3asr-files/2026/2026-05.zip",
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"key": "2026/2026-05.zip",
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"size": 13818783,
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"records": 154,
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"updatedAt": "2026-05-16T03:03:25.800Z"
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}
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]
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}
Download Entire Dataset: https://api.sec-api.io/datasets/form-s3asr-files.zip?token=YOUR_API_KEY
Downloads the complete dataset as a single ZIP archive covering all Form S-3ASR filings from December 2005 to present. This endpoint requires an API key.
Download Single Container: https://api.sec-api.io/datasets/form-s3asr-files/2026/2026-05.zip?token=YOUR_API_KEY
Containers are organized by year and month in YYYY/YYYY-MM.zip format. Each monthly container holds all S-3ASR filings submitted in that month, including metadata files and the original EDGAR documents. Use the container URLs listed in the JSON index to fetch specific months individually instead of downloading the full archive. This endpoint requires an API key.
The dataset covers Form S-3ASR, the automatic shelf registration statement available under the Securities Act of 1933 to well-known seasoned issuers (WKSIs). It does not cover non-automatic Form S-3, foreign-issuer Form F-3ASR or F-3, takedown prospectus supplements under Rule 424(b), or post-effective amendments — those are separate filings under their own accession numbers.
One record is one complete EDGAR submission of Form S-3ASR, identified by its 18-digit accession number and materialised as a single flat folder named after that accession number (dashes stripped). The folder contains the primary registration statement, every filed exhibit (EX-4 securities instruments, EX-5 legality opinions, EX-15 awareness letters, EX-23 consents, EX-24 powers of attorney, EX-25 trustee Form T-1 statements, EX-FILING FEES / EX-107), and a metadata.json mirroring the EDGAR submission header.
Only well-known seasoned issuers as defined in Rule 405 of the Securities Act may file S-3ASR. A WKSI must meet Form S-3 primary-offering eligibility, satisfy a size test (USD 700 million worldwide non-affiliate common equity float, or USD 1 billion in registered non-convertible securities issued for cash in the prior three years), and not be an "ineligible issuer." Foreign private WKSIs file the parallel Form F-3ASR instead.
Immediately upon filing, under Rule 462(e). There is no staff review and no separate acceleration order, which is the form's defining procedural feature. On every record, metadata.json -> effectivenessDate equals the date component of filedAt.
From December 1, 2005 — the effective date of the SEC's 2005 Securities Offering Reform release (Release No. 33-8591), which created Form S-3ASR — to the present. There is no pre-2005 equivalent because automatic shelf registration did not exist before Securities Offering Reform.
The dataset is distributed as monthly ZIP containers keyed YYYY/YYYY-MM.zip. Inside each container, per-accession folders hold documents in HTML (with the EX-FILING FEES exhibit delivered as inline-XBRL XHTML), JSON for the metadata.json submission-header mirror, and occasionally TXT or PDF for non-HTML exhibits the registrant attached.
S-3ASR registers the shelf — the menu of securities the issuer may offer and the general terms of distribution — and is effective for three years under Rule 415(a)(5). 424B supplements (424B1 through 424B8) are separate filings under Rule 424 that document each actual takedown against the shelf, carrying deal-specific pricing, tranche size, underwriters, and use-of-proceeds. A single S-3ASR typically supports many 424B supplements; pairing the two datasets yields a complete view from registration to issuance.