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Magnetar funds trim CoreWeave (CRWV) stake with 422,762-share open-market sale

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

Rhea-AI Filing Summary

CoreWeave, Inc. reported that investment funds advised by Magnetar entities completed open-market sales of Class A Common Stock. On April 15, 2026, the Magnetar-advised funds sold a combined 422,762 shares of CoreWeave at weighted average prices between approximately $117.06 and $119.50 per share.

The shares are held directly by Magnetar Xing He Master Fund Ltd, Purpose Alternative Credit Fund - F LLC, Purpose Alternative Credit Fund - T LLC and Longhorn Special Opportunities Fund LP. Magnetar Financial LLC serves as investment adviser, and related Magnetar entities and David J. Snyderman disclaim beneficial ownership except for their pecuniary interests.

Positive

  • None.

Negative

  • None.
Insider Magnetar Financial LLC, Magnetar Capital Partners LP, Supernova Management LLC, Snyderman David J.
Role 10% Owner | 10% Owner | 10% Owner | 10% Owner
Sold 422,762 shs ($50.17M)
Type Security Shares Price Value
Sale Class A Common Stock 12,382 $117.79 $1.46M
Sale Class A Common Stock 161,969 $118.57 $19.20M
Sale Class A Common Stock 39,783 $119.34 $4.75M
Sale Class A Common Stock 9,974 $117.79 $1.17M
Sale Class A Common Stock 130,474 $118.57 $15.47M
Sale Class A Common Stock 32,049 $119.34 $3.82M
Sale Class A Common Stock 2,087 $117.79 $246K
Sale Class A Common Stock 27,329 $118.57 $3.24M
Sale Class A Common Stock 6,715 $119.34 $801K
holding Class A Common Stock -- -- --
Holdings After Transaction: Class A Common Stock — 3,142,801 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 $117.06 to $118.00, 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 and in footnotes 2 and 3. The price reported in Column 4 is a weighted average price. These securities were sold in multiple transactions at prices ranging from $118.20 to $119.11, inclusive. The price reported in Column 4 is a weighted average price. These securities were sold in multiple transactions at prices ranging from $119.20 to $119.50, inclusive. Magnetar Financial LLC ("Magnetar Financial") serves as the investment adviser to each of Magnetar Xing He Master Fund Ltd, Purpose Alternative Credit Fund - F LLC, Purpose Alternative Credit Fund - T LLC and Longhorn Special Opportunities Fund LP (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 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 422,762 shares Aggregate open-market sales on April 15, 2026
Low sale price range $117.06–$118.00 Weighted average trades in first disclosed range
Mid sale price range $118.20–$119.11 Weighted average trades in second disclosed range
High sale price range $119.20–$119.50 Weighted average trades in third disclosed range
Largest post-transaction holding 3,142,801 shares Indirect Class A Common Stock holding after one sale entry
Another post-transaction holding 825,894 shares Indirect Class A Common Stock holding after another sale entry
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.
investment adviser financial
"Magnetar Financial LLC serves as the investment adviser to each of Magnetar Xing He Master Fund Ltd..."
An investment adviser is a person or firm that professionally manages money and gives recommendations about buying, selling, or holding investments. Like a financial coach or guide, they have a legal duty to act in a client's best financial interest, so their advice, fees and potential conflicts can directly affect returns and risk — making their role important for investors who want informed, accountable help with portfolios.
beneficial ownership financial
"Each of the Magnetar Funds, Magnetar Financial, Magnetar Capital Partners, Supernova Management and David J. Snyderman disclaims beneficial ownership..."
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.
pecuniary interest financial
"disclaims beneficial ownership of these shares of Common Stock... except to the extent of its or his pecuniary interest therein."
ten percent owner financial
"reportingPersons ... is_ten_percent_owner: 1"
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)
04/15/2026		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 Stock04/15/2026S12,382D$117.79(1)3,142,801IFootnotes(4)(5)(6)(7)
Class A Common Stock04/15/2026S161,969D$118.57(2)2,980,832IFootnotes(4)(5)(6)(7)
Class A Common Stock04/15/2026S39,783D$119.34(3)2,941,049IFootnotes(4)(5)(6)(7)
Class A Common Stock04/15/2026S9,974D$117.79(1)2,983,796IFootnotes(4)(5)(6)(8)
Class A Common Stock04/15/2026S130,474D$118.57(2)2,853,322IFootnotes(4)(5)(6)(8)
Class A Common Stock04/15/2026S32,049D$119.34(3)2,821,273IFootnotes(4)(5)(6)(8)
Class A Common Stock04/15/2026S2,087D$117.79(1)859,938IFootnotes(4)(5)(6)(9)
Class A Common Stock04/15/2026S27,329D$118.57(2)832,609IFootnotes(4)(5)(6)(9)
Class A Common Stock04/15/2026S6,715D$119.34(3)825,894IFootnotes(4)(5)(6)(9)
Class A Common Stock1,973,782IFootnotes(4)(5)(6)(10)
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 $117.06 to $118.00, 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 and in footnotes 2 and 3.
2. The price reported in Column 4 is a weighted average price. These securities were sold in multiple transactions at prices ranging from $118.20 to $119.11, inclusive.
3. The price reported in Column 4 is a weighted average price. These securities were sold in multiple transactions at prices ranging from $119.20 to $119.50, inclusive.
4. Magnetar Financial LLC ("Magnetar Financial") serves as the investment adviser to each of Magnetar Xing He Master Fund Ltd, Purpose Alternative Credit Fund - F LLC, Purpose Alternative Credit Fund - T LLC and Longhorn Special Opportunities Fund LP (collectively, the "Magnetar Funds").
5. 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.
6. 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.
7. These securities are held directly by Magnetar Xing He Master Fund Ltd.
8. These securities are held directly by Purpose Alternative Credit Fund - F LLC.
9. These securities are held directly by Purpose Alternative Credit Fund - T LLC.
10. 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

At what prices did the Magnetar-advised funds sell CoreWeave (CRWV) shares?

The reported sale prices are weighted averages. Footnotes state the CoreWeave shares were sold in multiple transactions at prices ranging from $117.06 to $118.00, $118.20 to $119.11, and $119.20 to $119.50 per share, reflecting several execution ranges during the trading day.

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

No. The filing states each Magnetar fund, Magnetar Financial, Magnetar Capital Partners, Supernova Management and David J. Snyderman disclaim beneficial ownership of the CoreWeave shares, except to the extent of their respective pecuniary interests arising from the investment relationships described.

What role does Magnetar Financial LLC play regarding CoreWeave (CRWV) holdings?

Magnetar Financial LLC serves as investment adviser to the Magnetar funds that directly hold CoreWeave shares. Magnetar Capital Partners is its parent holding company, and Supernova Management LLC is general partner to Magnetar Capital Partners, forming the management chain described in the filing footnotes.