STOCK TITAN
  1. Home
  2. Sec-filings
  3. CRWV
  4. [Form 4] CoreWeave, Inc. Insider Trading Activity

Magnetar funds sell 203,356 CoreWeave (CRWV) shares but retain large stake

Filing Impact
(Very High)
Filing Sentiment
(Very Negative)
Form Type
4

Rhea-AI Filing Summary

CoreWeave, Inc. received a Form 4 showing that investment funds advised by Magnetar Financial LLC, a ten percent owner, executed open-market sales of 203,356 shares of Class A Common Stock on April 17. The trades were reported at prices including $118.18 and $120.86 per share, with one tranche sold at a weighted average price across $120.65–$121.29.

After these transactions, the filing lists substantial remaining indirect holdings at various Magnetar-managed vehicles, such as 20,809,143 shares, 8,248,929 shares and other positions across entities including CW Opportunity 2 LP and CW Opportunity LLC. Magnetar entities and David J. Snyderman disclaim beneficial ownership of these shares except to the extent of any pecuniary interest.

Positive

  • None.

Negative

  • None.

Insights

Magnetar-related funds sold 203,356 CoreWeave shares but kept large positions.

Investment funds advised by Magnetar Financial LLC, identified as ten percent owners, reported open-market sales totaling 203,356 shares of CoreWeave Class A stock. Sale prices clustered around $118.18 and $120.86 per share, with one tranche at a weighted average between $120.65 and $121.29.

The transactions are pure disposals (all coded S) with no accompanying option exercises or grants, so they represent net selling activity. However, the filing still shows sizeable indirect holdings, including positions of 20,809,143 and 8,248,929 shares at specific Magnetar-managed funds, indicating the group remains a major shareholder.

The shares are held across multiple funds such as CW Opportunity 2 LP and CW Opportunity LLC, and Magnetar entities plus David J. Snyderman formally disclaim beneficial ownership beyond pecuniary interests. The net effect is a notable but context-limited reduction in a large institutional holder’s stake, without additional information on motives or trading plans.

Insider Magnetar Financial LLC, Magnetar Capital Partners LP, Supernova Management LLC, Snyderman David J.
Role 10% Owner | 10% Owner | 10% Owner | 10% Owner
Sold 203,356 shs ($24.17M)
Type Security Shares Price Value
Sale Class A Common Stock 13,236 $118.18 $1.56M
Sale Class A Common Stock 4,437 $120.86 $536K
Sale Class A Common Stock 40,851 $118.18 $4.83M
Sale Class A Common Stock 13,715 $120.86 $1.66M
Sale Class A Common Stock 5,356 $118.18 $633K
Sale Class A Common Stock 1,798 $120.86 $217K
Sale Class A Common Stock 554 $118.18 $65K
Sale Class A Common Stock 184 $120.86 $22K
Sale Class A Common Stock 11,939 $118.18 $1.41M
Sale Class A Common Stock 4,006 $120.86 $484K
Sale Class A Common Stock 16,390 $118.18 $1.94M
Sale Class A Common Stock 5,500 $120.86 $665K
Sale Class A Common Stock 20,545 $118.18 $2.43M
Sale Class A Common Stock 6,898 $120.86 $834K
Sale Class A Common Stock 4,642 $118.18 $549K
Sale Class A Common Stock 1,555 $120.86 $188K
Sale Class A Common Stock 17,477 $118.18 $2.07M
Sale Class A Common Stock 5,866 $120.86 $709K
Sale Class A Common Stock 10,771 $118.18 $1.27M
Sale Class A Common Stock 3,617 $120.86 $437K
Sale Class A Common Stock 8,677 $118.18 $1.03M
Sale Class A Common Stock 2,912 $120.86 $352K
Sale Class A Common Stock 1,818 $118.18 $215K
Sale Class A Common Stock 612 $120.86 $74K
holding Class A Common Stock -- -- --
Holdings After Transaction: Class A Common Stock — 5,084,212 shares (Indirect, Footnotes)
Footnotes (1)
  1. The price reported in Column 4 is a weighted average price. These securities were sold in multiple transactions at prices ranging from $120.65 to $121.29, inclusive. The reporting person undertakes to provide to CoreWeave, Inc. (the "Issuer"), any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth in this footnote. Magnetar Financial LLC ("Magnetar Financial") serves as the investment adviser to each of CW Opportunity 2 LP, CW Opportunity LLC, Longhorn Special Opportunities Fund LP, Magnetar Capital Master Fund, Ltd, Magnetar Constellation Master Fund, Ltd, Magnetar Longhorn Fund LP, Magnetar SC Fund Ltd, Magnetar Xing He Master Fund Ltd, Purpose Alternative Credit Fund - F LLC, and Purpose Alternative Credit Fund - T LLC, the general partner of Magnetar Structured Credit Fund, LP and the manager of Magnetar Alpha Star Fund LLC and Magnetar Lake Credit Fund LLC (collectively, the "Magnetar Funds"). Magnetar Capital Partners LP ("Magnetar Capital Partners") is the sole member and parent holding company of Magnetar Financial. Supernova Management LLC ("Supernova Management") is the general partner of Magnetar Capital Partners. The administrative manager of Supernova Management is David J. Snyderman, a citizen of the United States of America. Each of the Magnetar Funds, Magnetar Financial, Magnetar Capital Partners, Supernova Management and David J. Snyderman disclaims beneficial ownership of these shares of Common Stock of the Issuer, except to the extent of its or his pecuniary interest therein. These securities are held directly by CW Opportunity 2 LP. These securities are held directly by CW Opportunity LLC. These securities are held directly by Magnetar Alpha Star Fund LLC. These securities are held directly by Magnetar Capital Master Fund, Ltd. These securities are held directly by Magnetar Constellation Master Fund, Ltd. These securities are held directly by Magnetar Lake Credit Fund LLC. These securities are held directly by Magnetar Longhorn Fund LP. These securities are held directly by Magnetar SC Fund Ltd. These securities are held directly by Magnetar Structured Credit Fund, LP. These securities are held directly by Magnetar Xing He Master Fund Ltd. These securities are held directly by Purpose Alternative Credit Fund - F LLC. These securities are held directly by Purpose Alternative Credit Fund - T LLC. These securities are held directly by Longhorn Special Opportunities Fund LP.
Shares sold 203,356 shares Net open-market sales on April 17
Sale price $118.18 per share Price for multiple April 17 sales
Sale price $120.86 per share Price for multiple April 17 sales
Weighted price range $120.65–$121.29 Range used to calculate weighted average in one tranche
Holding after transaction 20,809,143 shares Indirect holding shown for one Magnetar fund
Holding after transaction 8,248,929 shares Indirect holding shown for another Magnetar fund
Holding after transaction 5,079,775 shares Indirect holding shown at one Magnetar-related entity
open-market sale financial
"transaction_action": "open-market sale""
An open-market sale is when a shareholder sells existing shares directly on a public exchange to any willing buyer, rather than through a private deal. Think of it like putting goods on a busy market stall where price is set by supply and demand; for investors it matters because such sales increase available supply, can put short-term downward pressure on the stock price, and signal changes in liquidity or investor confidence.
weighted average price financial
"The price reported in Column 4 is a weighted average price."
Weighted average price is the average price of a security where each trade or component is counted according to its size, so bigger trades pull the average more than smaller ones. Think of it like calculating the average cost of a grocery haul where items you bought more of have greater influence on the final per-item cost. Investors use it to understand the true average price paid or received, judge execution quality, and compare trading performance against market movement.
ten percent owner regulatory
""is_ten_percent_owner": 1"
beneficial ownership regulatory
"disclaims beneficial ownership of these shares of Common Stock"
Beneficial ownership means the person or entity that actually enjoys the benefits of owning shares or other assets — such as receiving dividends, voting rights, or price gains — even if the legal title is held in another name. For investors it matters because knowing who truly controls and profits from a company reveals who can influence decisions, exposes potential conflicts of interest or hidden concentration of power, and affects transparency and risk in the stock.
indirect ownership financial
""ownership_type": "indirect""
Form 4 Insider Transactions: What Each Field Means →
SEC Form 4
FORM 4UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940
OMB APPROVAL
OMB Number:3235-0287
Estimated average burden
hours per response:0.5
Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).
Check this box to indicate that a transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). See Instruction 10.
1. Name and Address of Reporting Person*
Magnetar Financial LLC
(Last)(First)(Middle)
1603 ORRINGTON AVENUE
13TH FLOOR
(Street)
EVANSTON ILLINOIS 60201
(City)(State)(Zip)
UNITED STATES
(Country)		2. Issuer Name and Ticker or Trading Symbol
CoreWeave, Inc. [ CRWV ] 		5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)
DirectorX10% Owner
Officer (give title below)Other (specify below)
2a. Foreign Trading Symbol
3. Date of Earliest Transaction (Month/Day/Year)
04/17/2026		6. Individual or Joint/Group Filing (Check Applicable Line)
Form filed by One Reporting Person
XForm filed by More than One Reporting Person
4. If Amendment, Date of Original Filed (Month/Day/Year)

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1. Title of Security (Instr. 3) 2. Transaction Date (Month/Day/Year)2A. Deemed Execution Date, if any (Month/Day/Year)3. Transaction Code (Instr. 8) 4. Securities Acquired (A) or Disposed Of (D) (Instr. 3, 4 and 5) 5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4) 6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4) 7. Nature of Indirect Beneficial Ownership (Instr. 4)
CodeVAmount(A) or (D)Price
Class A Common Stock04/17/2026S13,236D$118.185,084,212IFootnotes(2)(3)(4)(5)
Class A Common Stock04/17/2026S4,437D$120.86(1)5,079,775IFootnotes(2)(3)(4)(5)
Class A Common Stock04/17/2026S40,851D$118.1820,809,143IFootnotes(2)(3)(4)(6)
Class A Common Stock04/17/2026S13,715D$120.86(1)20,795,428IFootnotes(2)(3)(4)(6)
Class A Common Stock04/17/2026S5,356D$118.181,392,224IFootnotes(2)(3)(4)(7)
Class A Common Stock04/17/2026S1,798D$120.86(1)1,390,426IFootnotes(2)(3)(4)(7)
Class A Common Stock04/17/2026S554D$118.18282,016IFootnotes(2)(3)(4)(8)
Class A Common Stock04/17/2026S184D$120.86(1)281,832IFootnotes(2)(3)(4)(8)
Class A Common Stock04/17/2026S11,939D$118.184,624,064IFootnotes(2)(3)(4)(9)
Class A Common Stock04/17/2026S4,006D$120.86(1)4,620,058IFootnotes(2)(3)(4)(9)
Class A Common Stock04/17/2026S16,390D$118.185,798,782IFootnotes(2)(3)(4)(10)
Class A Common Stock04/17/2026S5,500D$120.86(1)5,793,282IFootnotes(2)(3)(4)(10)
Class A Common Stock04/17/2026S20,545D$118.188,248,929IFootnotes(2)(3)(4)(11)
Class A Common Stock04/17/2026S6,898D$120.86(1)8,242,031IFootnotes(2)(3)(4)(11)
Class A Common Stock04/17/2026S4,642D$118.181,028,732IFootnotes(2)(3)(4)(12)
Class A Common Stock04/17/2026S1,555D$120.86(1)1,027,177IFootnotes(2)(3)(4)(12)
Class A Common Stock04/17/2026S17,477D$118.188,173,781IFootnotes(2)(3)(4)(13)
Class A Common Stock04/17/2026S5,866D$120.86(1)8,167,915IFootnotes(2)(3)(4)(13)
Class A Common Stock04/17/2026S10,771D$118.182,814,779IFootnotes(2)(3)(4)(14)
Class A Common Stock04/17/2026S3,617D$120.86(1)2,811,162IFootnotes(2)(3)(4)(14)
Class A Common Stock04/17/2026S8,677D$118.182,719,553IFootnotes(2)(3)(4)(15)
Class A Common Stock04/17/2026S2,912D$120.86(1)2,716,641IFootnotes(2)(3)(4)(15)
Class A Common Stock04/17/2026S1,818D$118.18804,573IFootnotes(2)(3)(4)(16)
Class A Common Stock04/17/2026S612D$120.86(1)803,961IFootnotes(2)(3)(4)(16)
Class A Common Stock1,973,782IFootnotes(2)(3)(4)(17)
Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned
(e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 3) 2. Conversion or Exercise Price of Derivative Security 3. Transaction Date (Month/Day/Year)3A. Deemed Execution Date, if any (Month/Day/Year)4. Transaction Code (Instr. 8) 5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5) 6. Date Exercisable and Expiration Date (Month/Day/Year)7. Title and Amount of Securities Underlying Derivative Security (Instr. 3 and 4) 8. Price of Derivative Security (Instr. 5) 9. Number of derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4) 10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4) 11. Nature of Indirect Beneficial Ownership (Instr. 4)
CodeV(A)(D)Date ExercisableExpiration DateTitleAmount or Number of Shares
1. Name and Address of Reporting Person*
Magnetar Financial LLC
(Last)(First)(Middle)
1603 ORRINGTON AVENUE
13TH FLOOR
(Street)
EVANSTON ILLINOIS 60201
(City)(State)(Zip)
UNITED STATES
(Country)
Relationship of Reporting Person(s) to Issuer
DirectorX10% Owner
Officer (give title below)Other (specify below)
1. Name and Address of Reporting Person*
Magnetar Capital Partners LP
(Last)(First)(Middle)
1603 ORRINGTON AVENUE
13TH FLOOR
(Street)
EVANSTON ILLINOIS 60201
(City)(State)(Zip)
UNITED STATES
(Country)
Relationship of Reporting Person(s) to Issuer
DirectorX10% Owner
Officer (give title below)Other (specify below)
1. Name and Address of Reporting Person*
Supernova Management LLC
(Last)(First)(Middle)
1603 ORRINGTON AVENUE
13TH FLOOR
(Street)
EVANSTON ILLINOIS 60201
(City)(State)(Zip)
UNITED STATES
(Country)
Relationship of Reporting Person(s) to Issuer
DirectorX10% Owner
Officer (give title below)Other (specify below)
1. Name and Address of Reporting Person*
Snyderman David J.
(Last)(First)(Middle)
1603 ORRINGTON AVENUE
13TH FLOOR
(Street)
EVANSTON ILLINOIS 60201
(City)(State)(Zip)
UNITED STATES
(Country)
Relationship of Reporting Person(s) to Issuer
DirectorX10% Owner
Officer (give title below)Other (specify below)
Explanation of Responses:
1. The price reported in Column 4 is a weighted average price. These securities were sold in multiple transactions at prices ranging from $120.65 to $121.29, inclusive. The reporting person undertakes to provide to CoreWeave, Inc. (the "Issuer"), any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth in this footnote.
2. Magnetar Financial LLC ("Magnetar Financial") serves as the investment adviser to each of CW Opportunity 2 LP, CW Opportunity LLC, Longhorn Special Opportunities Fund LP, Magnetar Capital Master Fund, Ltd, Magnetar Constellation Master Fund, Ltd, Magnetar Longhorn Fund LP, Magnetar SC Fund Ltd, Magnetar Xing He Master Fund Ltd, Purpose Alternative Credit Fund - F LLC, and Purpose Alternative Credit Fund - T LLC, the general partner of Magnetar Structured Credit Fund, LP and the manager of Magnetar Alpha Star Fund LLC and Magnetar Lake Credit Fund LLC (collectively, the "Magnetar Funds").
3. Magnetar Capital Partners LP ("Magnetar Capital Partners") is the sole member and parent holding company of Magnetar Financial. Supernova Management LLC ("Supernova Management") is the general partner of Magnetar Capital Partners. The administrative manager of Supernova Management is David J. Snyderman, a citizen of the United States of America.
4. Each of the Magnetar Funds, Magnetar Financial, Magnetar Capital Partners, Supernova Management and David J. Snyderman disclaims beneficial ownership of these shares of Common Stock of the Issuer, except to the extent of its or his pecuniary interest therein.
5. These securities are held directly by CW Opportunity 2 LP.
6. These securities are held directly by CW Opportunity LLC.
7. These securities are held directly by Magnetar Alpha Star Fund LLC.
8. These securities are held directly by Magnetar Capital Master Fund, Ltd.
9. These securities are held directly by Magnetar Constellation Master Fund, Ltd.
10. These securities are held directly by Magnetar Lake Credit Fund LLC.
11. These securities are held directly by Magnetar Longhorn Fund LP.
12. These securities are held directly by Magnetar SC Fund Ltd.
13. These securities are held directly by Magnetar Structured Credit Fund, LP.
14. These securities are held directly by Magnetar Xing He Master Fund Ltd.
15. These securities are held directly by Purpose Alternative Credit Fund - F LLC.
16. These securities are held directly by Purpose Alternative Credit Fund - T LLC.
17. These securities are held directly by Longhorn Special Opportunities Fund LP.
/s/ Hayley A. Stein, Attorney-in-Fact for David J. Snyderman, as Administrative Manager of Supernova Management LLC, which is the General Partner of Magnetar Capital Partners LP, which is in turn the Sole Member of Magnetar Financial LLC04/17/2026
/s/ Hayley A. Stein, Attorney-in-Fact for David J. Snyderman, as Administrative Manager of Supernova Management LLC, which is the General Partner of Magnetar Capital Partners LP04/17/2026
/s/ Hayley A. Stein, Attorney-in-Fact for David J. Snyderman, as Administrative Manager of Supernova Management LLC04/17/2026
/s/ Hayley A. Stein, Attorney-in-Fact for David J. Snyderman04/17/2026
** Signature of Reporting PersonDate
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 4 (b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.
* Form 4: SEC 1474 (03-26)

Source: View Original Filing on SEC EDGAR

FAQ

What insider activity did Magnetar report for CoreWeave (CRWV)?

Magnetar-advised funds reported open-market sales of 203,356 CoreWeave Class A shares on April 17. All transactions were coded as sales, reducing their indirect holdings while leaving sizable positions across several Magnetar-managed investment funds.

How many CoreWeave (CRWV) shares do Magnetar funds still hold after these sales?

After the April 17 sales, the filing shows large remaining indirect positions at various Magnetar-managed funds, including 20,809,143 shares and 8,248,929 shares at specific entities, indicating Magnetar-related vehicles continue to hold substantial CoreWeave stakes.

Are the CoreWeave (CRWV) shares sold held directly by Magnetar Financial LLC?

No. Footnotes state the shares are held directly by multiple investment funds such as CW Opportunity 2 LP and other Magnetar vehicles. Magnetar Financial LLC and related entities act as adviser or manager rather than direct holders of the securities.

Do Magnetar and David J. Snyderman claim full beneficial ownership of CoreWeave (CRWV) shares?

No. The filing states that Magnetar entities and David J. Snyderman disclaim beneficial ownership of the CoreWeave shares, except to the extent of any pecuniary interest, clarifying how their economic exposure is treated for reporting purposes.

What does the weighted average price disclosure mean for CoreWeave (CRWV) trades?

A weighted average price means multiple trades occurred within a price range, here $120.65–$121.29, and were reported as a single averaged figure. The filer offers to provide full trade-by-trade details upon request to CoreWeave, shareholders, or regulators.