CoreWeave (CRWV): Insider Filings 2026
Insights derived from analysing SEC filings. Independent analysis of CoreWeave, Inc. Class A common stock, not a publication of the SEC.
Figures are read from the 403 Forms 4, the two Forms 4/A, the three Forms 3 and the 454 Forms 144 filed in the twelve months to 7 September 2026 naming CoreWeave, Inc. as issuer, together with the two Forms S-4/A of September 2025 that a Form 4 form type search returns, on the record for central index key 1769628. Accession numbers for every filing cited appear in the Sources appendix. Prices are the transaction prices and the aggregate market values reported on the face of those forms.
Summary
In the twelve months to 7 September 2026, people and entities subject to Section 16 of the Securities Exchange Act filed 403 Forms 4, two Forms 4/A and three Forms 3 naming CoreWeave as issuer, together with 454 Forms 144. Fourteen distinct reporting persons account for the 403 Forms 4 and ten for the 454 Forms 144. The most recent Forms 4 in the window are Magnetar Financial LLC's filings of 12 and 13 August 2026, reporting 2,147,871 and 1,921,259 shares. No Form 5 was filed in the window.
Table I of those Forms 4, which covers non derivative securities, records 4,545 lines under code S, an open market or private sale, over 77,752,779 shares of Class A common stock. It records no line under code P, an open market or private purchase: a query for code P across the window returns zero filings. Total consideration on the code S lines, each line taken at the price reported in column 4 of its form, is about $8.99bn. Magnetar Financial LLC accounts for about $5.76bn of that at an average of $127.87 a share, officers and directors for about $3.10bn at an average of $98.82 excluding withholding, and sales to cover tax withholding for about $125.8m at an average of $95.40.
CoreWeave reports a sale made to cover tax withholding on vesting restricted stock units under code S with a footnote rather than under code F. Fifty six Forms 4 in the window carry a footnote containing the word withholding, 55 of them coding the disposal S and one coding it F. Those 66 code S lines carry 1,318,977 shares, 1.7 per cent of the 77,752,779 shares disposed of under that code; the remaining 76,433,802 shares are coded S with no withholding footnote.
The Rule 10b5-1 checkbox on the cover of Form 4 is ticked on 192 of the 403 filings and not ticked on 211. Magnetar Financial LLC ticked it on none of its 119 Forms 4; across the remaining 284 filings, made by officers and directors, it is ticked on 192. Footnotes on the Forms 4 name 14 distinct trading plan adoption dates, running from 20 May 2025 to 13 May 2026, cited by seven reporting persons.
Four Forms 4 record gifts of Class A common stock under code G totalling 4,883,500 shares as originally filed and 4,683,500 shares after a Form 4/A restated one of them. Six further code G lines in Table II record Class B common stock moving between related trusts, each appearing twice in the same filing so that the reporting person's beneficial ownership does not change. Three Forms 3 were filed, by Jonathan Jones on becoming Chief Revenue Officer, by NVIDIA Corp as a 10 per cent owner reporting 47,213,353 Class A shares, and by Sachin Jain on becoming Chief Operating Officer.
The 454 Forms 144, which are notices of proposed sales under Rule 144 rather than records of completed sales, cover 32,662,364 shares at an aggregate market value stated on the notices of $3.2bn. Three hundred were filed by a person described on the notice as an officer and 154 by a person described as a director, 398 name a Rule 10b5-1 plan adoption date, and 400 name Morgan Stanley Smith Barney LLC Executive Financial Services as the broker. Magnetar Financial LLC filed no Form 144 in the window.
What was filed, and how it is counted
CoreWeave, Inc. (Nasdaq: CRWV, CIK 1769628) sells cloud computing capacity built on graphics processing units. Its Class A common stock began trading on 28 March 2025, and it has two classes of common stock outstanding, Class A and Class B, each Class B share converting into one Class A share at the holder's election.
Every count in this report is a count of filings. A person who files eleven Forms 4 in a month appears eleven times in the count, and the fourteen reporting persons behind the 403 Forms 4 are listed in Table 2.
A general filing search on formType:"4" returns 407 filings for this CIK, of which 405 carry CoreWeave as issuer. The residual two were opened. They are the Forms S-4/A filed on 17 and 25 September 2025 for the Core Scientific transaction, accessions 0001140361-25-035263 and 0001140361-25-036118, on which CoreWeave is the filer. The search field matches 4 inside S-4/A, which is how registration statements land inside a Form 4 count. They carry no Section 16 transaction and are excluded here. That leaves 405, which is 403 Forms 4 plus two Forms 4/A.
The transaction codes, and what each one means
A Form 4 reports each transaction against a one letter code. Table 1 gives the codes that appear on CoreWeave's Forms 4 in the window, the definition each carries under the SEC's Form 4 instructions, and the number of transaction lines and shares recorded against it in Table I of the form, which covers non derivative securities.
Table 1 Transaction codes on CoreWeave Forms 4, Table I, twelve months to 7 September 2026
| Code | What it means | Lines | Shares |
|---|---|---|---|
| S | Open market or private sale of a security | 4,545 | 77,752,779 |
| C | Conversion of a derivative security | 301 | 24,843,280 |
| M | Exercise or conversion of a derivative security exempted under Rule 16b-3 | 100 | 2,872,003 |
| J | Other acquisition or disposition; a footnote is required | 60 | 996,100 |
| A | Grant, award or other acquisition under Rule 16b-3(d) | 5 | 13,303 |
| X | Exercise of an in the money or at the money derivative security | 5 | 375,000 |
| G | Bona fide gift | 4 | 4,883,500 |
| F | Payment of an exercise price or a tax liability by delivering or withholding securities, incident to the receipt, exercise or vesting of a security issued under Rule 16b-3 | 1 | 6,398 |
| P | Open market or private purchase of a security | 0 | 0 |
Code C at 24,843,280 shares is the conversion of Class B common stock into Class A common stock; each Class B share converts into one Class A share at the holder's election, and the matching disposal appears in Table II of the same form. Code M at 2,872,003 shares is the settlement of restricted stock units and the exercise of stock options. Code A at 13,303 shares in Table I sits alongside 12 grants of restricted stock units totalling 1,261,090 underlying shares recorded in Table II.
No Form 4 in the twelve months records a transaction under code P. The query nonDerivativeTable.transactions.coding.code:"P" against the window returns zero filings. There were no open market purchases of Class A common stock by any reporting person. The buy to sell comparison in this report is computed on open market transactions only, which means codes P and S, and it stands at zero purchase lines against 4,479 code S lines that carry no withholding footnote.
How CoreWeave codes a sale to cover tax withholding
When restricted stock units vest, the holder owes tax. Issuers settle that liability in one of two ways, and the two carry different codes. Some withhold shares at source and report the disposal under code F. Others sell shares into the market to raise the cash and report the disposal under code S, with a footnote saying what the sale was for.
CoreWeave uses code S with a footnote. Fifty six Forms 4 in the window carry a footnote containing the word withholding. Fifty five of them code the disposal S. One codes it F. No other Form 4 in the window mentions withholding.
The footnote reads, in full and identically on every one of the 66 code S lines it attaches to:
"The reported transaction represents shares of Class A Common Stock of the Issuer sold to satisfy the reporting person's tax withholding obligations, which were incurred in connection with the vesting and settlement of restricted stock units."
Those 66 lines carry 1,318,977 shares at prices as filed averaging $95.40, or about $125.8m. The single code F line is 6,398 shares at $137.56 on 29 October 2025, reported by Jeff Baker, Principal Accounting Officer, on accession 0001699866-25-000009, and carries the same footnote text.
So of the 77,752,779 shares disposed under code S in twelve months, 1,318,977 shares, or 1.7 per cent, are sales to cover tax withholding on vesting. The remaining 76,433,802 shares are coded S with no withholding footnote.
Who filed, and what they reported
Table 2 gives every reporting person who filed a Form 4 in the window, the role as stated in the reporting owner block of the form, and the shares recorded against the main codes.
Table 2 Forms 4 by reporting person, twelve months to 7 September 2026
| Reporting person | Role as filed | Forms 4 | 10b5-1 box ticked | Code S, no withholding footnote | Code S, withholding | Code M | Code C | Code G |
|---|---|---|---|---|---|---|---|---|
| Magnetar Financial LLC | 10% owner | 119 | 0 | 45,028,526 | 0 | 0 | 0 | 0 |
| Brian M Venturo | Chief Strategy Officer | 45 | 39 | 11,230,191 | 273,817 | 529,838 | 11,933,958 | 1,283,500 |
| Brannin McBee | Chief Development Officer | 89 | 81 | 9,125,000 | 235,570 | 500,530 | 9,653,766 | 600,000 |
| Michael N Intrator | CEO and President, director, 10% owner | 48 | 40 | 8,389,777 | 340,276 | 608,296 | 3,255,556 | 1,000,000 |
| Jack D Cogen | Director | 4 | 0 | 2,000,000 | 0 | 0 | 0 | 2,000,000 |
| Kristen J McVeety | General Counsel and Secretary | 15 | 7 | 260,155 | 11,736 | 300,125 | 0 | 0 |
| Nitin Agrawal | Chief Financial Officer | 22 | 11 | 255,273 | 288,113 | 551,082 | 0 | 0 |
| Jeff Baker | Principal Accounting Officer | 12 | 0 | 53,775 | 16,568 | 46,733 | 0 | 0 |
| Chen Goldberg | EVP, Product and Engineering | 15 | 7 | 52,252 | 111,820 | 218,282 | 0 | 0 |
| Sachin Jain | Chief Operating Officer | 12 | 7 | 27,273 | 41,077 | 98,797 | 0 | 0 |
| Karen Boone | Director | 6 | 0 | 11,580 | 0 | 6,400 | 0 | 0 |
| Margaret C Whitman | Director | 7 | 0 | 0 | 0 | 5,100 | 0 | 0 |
| Glenn H Hutchins | Director | 7 | 0 | 0 | 0 | 6,820 | 0 | 0 |
| Jonathan Jones | Chief Revenue Officer | 2 | 0 | 0 | 0 | 0 | 0 | 0 |
| Total | 403 | 192 | 76,433,802 | 1,318,977 | 2,872,003 | 24,843,280 | 4,883,500 |
Jeff Baker also reported 12,500 shares under code A on 29 October 2025, and Margaret Whitman 220 shares and Glenn Hutchins 583 shares under the same code. Three reporting persons, Whitman, Hutchins and Jonathan Jones, reported no code S transaction at all. Jones's two Forms 4 record grants of restricted stock units in Table II and nothing in Table I.
Total consideration recorded on the code S lines, taking each line at the price reported in column 4 of its Form 4, is about $8.99bn across the twelve months. That divides into about $5.76bn for Magnetar Financial LLC at an average of $127.87 a share, about $3.10bn for officers and directors excluding withholding at an average of $98.82, and about $125.8m of withholding sales at an average of $95.40. Where a line carries a weighted average price footnote, the weighted average shown on the form is the figure used.
The Rule 10b5-1 checkbox
Form 4 carries a checkbox on its cover, tagged aff10b5One in the XML, which the filer ticks to state that the transaction is intended to satisfy the affirmative defence conditions of Rule 10b5-1(c). The box is ticked on 192 of the 403 Forms 4 and not ticked on 211.
Magnetar Financial LLC ticked the box on none of its 119 Forms 4. Across the remaining 284 Forms 4, filed by the officers and directors, the box is ticked on 192, or 68 per cent.
Footnotes on the Forms 4 name 14 distinct plan adoption dates, in the form "trading plan adopted by the reporting person on" a stated date. Table 3 gives them with the number of Forms 4 citing each.
Table 3 Rule 10b5-1 plan adoption dates named in Form 4 footnotes
| Plan adopted | Forms 4 citing it | Plan adopted | Forms 4 citing it |
|---|---|---|---|
| 20 May 2025 | 4 | 2 September 2025 | 26 |
| 21 May 2025 | 17 | 12 September 2025 | 7 |
| 22 May 2025 | 5 | 13 November 2025 | 22 |
| 23 May 2025 | 17 | 17 November 2025 | 21 |
| 28 May 2025 | 6 | 20 November 2025 | 23 |
| 3 June 2025 | 7 | 5 March 2026 | 30 |
| 27 August 2025 | 6 | 13 May 2026 | 1 |
Seven reporting persons name a plan. Brannin McBee names four across the year, adopted 20 May 2025, 2 September 2025, 17 November 2025 and 5 March 2026. Michael Intrator names two, 23 May 2025 and 20 November 2025. Brian Venturo names two, 21 May 2025 and 13 November 2025. Nitin Agrawal names 22 May 2025 and 27 August 2025, Kristen McVeety 28 May 2025 and 13 May 2026, Chen Goldberg 3 June 2025 and Sachin Jain 12 September 2025.
Four Forms 4 filed by directors in May 2026 carry neither the box nor a plan footnote. Karen Boone reported 11,580 shares sold on 26 May 2026 at prices of $107.00, $107.335, $108.00 and $108.23, on accession 0001769628-26-000252. Jack Cogen reported 986,540 shares on 26 May 2026 at $106.5411, $107.4269, $108.3189 and $109.0156 on accession 0001769628-26-000253; 742,307 shares on 27 and 28 May 2026 at prices from $103.77 to $108.2009 on accession 0001769628-26-000257; and 271,153 shares on 29 May 2026 at prices from $106.2989 to $108.8225 on accession 0001769628-26-000262. Those three Cogen filings total 2,000,000 shares.
Magnetar Financial LLC
Magnetar Financial LLC files as a 10 per cent owner and accounts for 119 of the 403 Forms 4, one of the two Forms 4/A, and 45,028,526 of the 77,752,779 shares recorded under code S. Its Forms 4 report on behalf of thirteen named funds, including CW Opportunity LLC, CW Opportunity 2 LP, Longhorn Special Opportunities Fund LP and several Magnetar master funds, with the footnotes stating that each fund and Magnetar Financial disclaims beneficial ownership except to the extent of its pecuniary interest.
Its Table II entries record derivative positions the other reporting persons do not use. Across the window Magnetar's forms record 171 lines writing call options over 15,850,000 shares, 24 lines buying put options over 2,000,000 shares, and 90 lines each recording the expiration of a call option and a put option over 10,100,000 shares, the footnotes describing these as collar arrangements entered into on stated dates in August and September 2025 that expired unexercised. A further 120 lines record forward sale contracts over 1,992,200 shares. The 996,100 shares recorded under code J in Table I are the settlements of variable prepaid forward sale contracts; the footnote on the 22 June 2026 filing, accession 0001104659-26-076934, states that the contract was entered into on 8 October 2025 and that the number of shares deliverable at settlement depended on the Nasdaq closing price on 18 June 2026. On 19 March 2026 Magnetar recorded five code X lines acquiring 375,000 shares on the exercise of a Right to Purchase, accession 0001104659-26-032871.
Magnetar's largest single Forms 4 by shares sold are 2,604,094 shares transacted 15 April 2026 and filed 17 April 2026, accession 0001104659-26-045065; 2,147,871 shares transacted 12 August 2026, accession 0001104659-26-097429; and 1,921,259 shares transacted 13 August 2026, accession 0001104659-26-097431. Magnetar filed no Form 144 in the window.
Gifts and trust transfers
Four Forms 4 record gifts of Class A common stock under code G in Table I, totalling 4,883,500 shares as originally filed: Brian Venturo 1,283,500 shares and Michael Intrator 1,000,000 shares, both transacted 13 November 2025; Jack Cogen 2,000,000 shares, described in the footnote as charitable gifts, transacted 13 November 2025; and Brannin McBee 600,000 shares transacted 26 November 2025.
The Cogen line was restated. Form 4/A accession 0002058050-25-000007, filed 20 November 2025, amends and restates the Form 4 of 17 November 2025 in its entirety and reports the gift at 1,800,000 shares, with a footnote recording a separate indirect transfer of 2,000,000 shares between two of the reporting person's entities that was exempt from reporting under Rule 16a-13. On the restated basis the four gifts total 4,683,500 shares.
Six code G lines in Table II record Class B common stock moving between related trusts. Each appears twice in the same filing, once as a disposal by one trust and once as an acquisition by another in the same amount, so the reporting person's beneficial ownership does not change: Brian Venturo 5,402,057 shares on 12 May 2026 and 1,578,349 shares on 13 August 2026, and Michael Intrator 136,947 shares on 13 August 2026.
The other Form 4/A, accession 0001104659-26-098473 filed 18 August 2026, restates Magnetar's Form 4 of 14 August 2026 to reallocate sales among the funds. Its remark states that the amendment does not change the aggregate number of shares sold by the Magnetar Funds.
Forms 3
Three Forms 3, the initial statement of beneficial ownership a person files on becoming an officer, director or 10 per cent owner, were filed in the window.
Table 4 Forms 3 naming CoreWeave as issuer, twelve months to 7 September 2026
| Filed | Event date | Reporting person | Relationship as filed | Class A held directly | Accession |
|---|---|---|---|---|---|
| 24 October 2025 | 11 October 2025 | Jonathan Jones | Chief Revenue Officer | n/a | 0002092880-25-000003 |
| 26 January 2026 | 23 January 2026 | NVIDIA Corp | 10% owner | 47,213,353 | 0001045810-26-000007 |
| 9 April 2026 | 6 April 2026 | Sachin Jain | Chief Operating Officer | 126,644 | 0001769628-26-000155 |
The Jones Form 3 reports no securities in either table. Sachin Jain's Form 3 also reports four restricted stock unit awards in Table II over 337,500, 128,603, 91,290 and 90 underlying shares. NVIDIA Corp filed no Form 4 naming CoreWeave as issuer in the window. Nineteen Forms 3 have been filed against this issuer in total since the company's registration.
No Form 5 was filed in the window.
The 454 Forms 144
A Form 144 is a notice of a proposed sale of restricted or control securities under Rule 144. The number on it is the number the filer proposes to sell. A completed sale by a Section 16 person is reported separately, on a Form 4.
The 454 notices in the window cover 32,662,364 shares with an aggregate market value stated on the notices of $3.2bn. Three hundred were filed by a person described on the notice as an officer and 154 by a person described as a director. Three hundred and ninety eight name a Rule 10b5-1 plan adoption date. Four hundred name Morgan Stanley Smith Barney LLC Executive Financial Services as the broker, 43 name Morgan Stanley Smith Barney LLC, seven J.P. Morgan Securities LLC and four Goldman Sachs & Co. LLC.
Table 5 Forms 144 by reporting person, twelve months to 7 September 2026
| Reporting person | Notices | Shares proposed for sale | Aggregate market value as stated ($bn) |
|---|---|---|---|
| Brian M Venturo | 74 | 11,504,008 | 1.137 |
| Brannin McBee | 224 | 9,360,570 | 0.897 |
| Michael N Intrator | 86 | 8,730,053 | 0.854 |
| Jack D Cogen | 4 | 2,000,000 | 0.213 |
| Nitin Agrawal | 21 | 541,878 | 0.051 |
| Kristen J McVeety | 13 | 271,891 | 0.027 |
| Chen Goldberg | 16 | 164,072 | 0.016 |
| Sachin Jain | 11 | 64,397 | 0.007 |
| Jeff Baker | 3 | 13,915 | 0.002 |
| Karen Boone | 2 | 11,580 | 0.001 |
| Total | 454 | 32,662,364 | 3.205 |
A single notice often names an account other than the reporting person: the person for whose account the securities are to be sold is stated separately. Across the 454 notices that field carries 30 distinct spellings, several of them variants of one account. Among the named accounts are Omnadora Capital LLC, West Clay Capital LLC, the Venturo Family GST-Exempt Trust, the Brannin J. McBee 2022 Irrevocable Trust, the Canis Major and Canis Minor 2025 GRATs and the PMI 2024 F&F GRAT.
The notices also state how the shares were originally acquired, in 468 blocks across the 454 filings. Founders shares, under that label or as "Founder Shares", account for 337 of them; restricted stock units under four different labels account for 87; preferred stock conversion and Series A preferred stock account for 30; restricted stock for 11; and a transfer, a private acquisition from the issuer or an affiliate, and an option exercise for one each.
The 454 notices cover 32,662,364 shares. The Forms 4 of the same ten officers and directors record 32,724,253 shares under code S over the same twelve months. Magnetar filed no Form 144, so it takes no part in either figure.
Sources
Every accession number this report cites. Filing data was retrieved through the SEC-API.io MCP server.
Section 16 reports naming CoreWeave, Inc., CIK 1769628, as issuer, twelve months to 7 September 2026
| Set | Count | Where the accessions sit |
|---|---|---|
| Forms 4 | 403 | Filed under the fourteen reporting persons in Table 2; the individual accessions cited in the text are listed below |
| Forms 4/A | 2 | 0002058050-25-000007 and 0001104659-26-098473 |
| Forms 3 | 3 | 0002092880-25-000003, 0001045810-26-000007 and 0001769628-26-000155, as listed in Table 4 |
| Forms 5 | 0 | None filed in the window |
| Forms 144 | 454 | Filed under the ten reporting persons in Table 5 |
Individual accessions cited in the text
| Accession | Filed by | What it is |
|---|---|---|
| 0001699866-25-000009 | Jeff Baker | Form 4 carrying the single code F line, 6,398 shares at $137.56 on 29 October 2025 |
| 0001769628-26-000252 | Karen Boone | Form 4, 11,580 shares sold 26 May 2026 |
| 0001769628-26-000253 | Jack D Cogen | Form 4, 986,540 shares sold 26 May 2026 |
| 0001769628-26-000257 | Jack D Cogen | Form 4, 742,307 shares sold 27 and 28 May 2026 |
| 0001769628-26-000262 | Jack D Cogen | Form 4, 271,153 shares sold 29 May 2026 |
| 0002058050-25-000007 | Jack D Cogen | Form 4/A of 20 November 2025 restating the gift at 1,800,000 shares |
| 0001104659-26-032871 | Magnetar Financial LLC | Form 4, five code X lines acquiring 375,000 shares on 19 March 2026 |
| 0001104659-26-045065 | Magnetar Financial LLC | Form 4, 2,604,094 shares transacted 15 April 2026 |
| 0001104659-26-076934 | Magnetar Financial LLC | Form 4 of 22 June 2026 carrying the variable prepaid forward footnote |
| 0001104659-26-097429 | Magnetar Financial LLC | Form 4, 2,147,871 shares transacted 12 August 2026 |
| 0001104659-26-097431 | Magnetar Financial LLC | Form 4, 1,921,259 shares transacted 13 August 2026 |
| 0001104659-26-098473 | Magnetar Financial LLC | Form 4/A of 18 August 2026 reallocating sales among the funds |
| 0001140361-25-035263 | CoreWeave, Inc. | Form S-4/A of 17 September 2025, returned by a Form 4 form type search and excluded here |
| 0001140361-25-036118 | CoreWeave, Inc. | Form S-4/A of 25 September 2025, returned by a Form 4 form type search and excluded here |
Disclaimer
This report is not financial advice, and it is not an offer, a solicitation or a recommendation to buy, sell or hold any security. It is independent analysis of public filings, prepared for information only. It is not a publication of the Securities and Exchange Commission, and the SEC has neither reviewed nor endorsed it. No investment objective, financial situation or particular need of any reader has been considered.
The Sources appendix lists the filing record behind it in full. CoreWeave, Inc. listed its Class A common stock in March 2025, so one annual report on Form 10-K exists, for the year ended 31 December 2025, and the audited years before it are read from the Form 424B4 prospectus of 31 March 2025 rather than from an annual report. Five quarterly reports on Form 10-Q have been filed, the most recent for the quarter ended 30 June 2026, which is the most recent reported period. This report is built on the Section 16 reports and the Forms 144 listed in the Sources appendix, filed in the twelve months to 7 September 2026, and it reads no periodic report. Every count in it is a count of filings rather than of people or of completed sales, and a Form 144 is a notice of a proposed sale. Filing data was retrieved through the SEC-API.io MCP server; no SEC website endpoint was queried directly.
Figures described as filed are reproduced from those forms. The prices are the transaction prices and the aggregate market values stated on the face of the forms anywhere in this report. The totals, averages and shares, including the consideration figures and the withholding share of code S disposals, are this report's own arithmetic on those filed lines. Forms 4 may be amended, and two were amended within the window; a later amendment may change a figure reported here.
