Magnetar funds sell 422,762 CoreWeave shares

CoreWeave, Inc. reported that investment funds advised by Magnetar entities completed open-market sales of Class A Common Stock.

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.

Insider Trade Summary

Net Seller: 422,762 shares

Net Sell 10 txns

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 — 2,799,676 shares (Indirect, Footnotes)

Footnotes (10)

1. F1. 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. F2. 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. F3. 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. F4. 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. F5. 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. F6. 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. F7. These securities are held directly by Magnetar Xing He Master Fund Ltd.
8. F8. These securities are held directly by Purpose Alternative Credit Fund - F LLC.
9. F9. These securities are held directly by Purpose Alternative Credit Fund - T LLC.
10. F10. These securities are held directly by Longhorn Special Opportunities Fund LP.

Key Figures

Shares sold: 422,762 shares Low sale price range: $117.06–$118.00 Mid sale price range: $118.20–$119.11 +3 more

6 metrics

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

Key Terms

weighted average price, investment adviser, beneficial ownership, pecuniary interest, +1 more

5 terms

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"

FAQ

AI-generated questions and answers. How Rhea-AI works. Not financial advice.

What insider activity did Magnetar-related funds report in CoreWeave (CRWV)?

Magnetar-advised funds reported open-market sales of CoreWeave Class A Common Stock. On April 15, 2026 they sold 422,762 shares across multiple trades, with weighted average prices between roughly $117.06 and $119.50 per share, according to the Form 4 disclosure and its footnotes.

Who actually holds the CoreWeave (CRWV) shares related to this Form 4?

The CoreWeave 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 acts as investment adviser to these funds under the disclosed structure.

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.

How many CoreWeave (CRWV) shares did Magnetar-related funds sell in total?

Across nine open-market sale transactions, the Magnetar-advised funds sold a combined 422,762 shares of CoreWeave Class A Common Stock. This aggregate figure is drawn from the Form 4 transaction summary, which totals all reported sale-share amounts for that reporting date.

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.

AI-generated analysis. How Rhea-AI works. Not financial advice.

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Accepted by SEC EDGAR 04/17/2026 - 08:36 PM EDT Learn about SEC filing dates

SEC Form 4

FORM 4

UNITED 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)

	Director	X	10% 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
X	Form 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)
			Code	V	Amount	(A) or (D)	Price
Class A Common Stock	04/15/2026		S		12,382	D	$117.79(1)	3,142,801	I	Footnotes(4)(5)(6)(7)
Class A Common Stock	04/15/2026		S		161,969	D	$118.57(2)	2,980,832	I	Footnotes(4)(5)(6)(7)
Class A Common Stock	04/15/2026		S		39,783	D	$119.34(3)	2,941,049	I	Footnotes(4)(5)(6)(7)
Class A Common Stock	04/15/2026		S		9,974	D	$117.79(1)	2,983,796	I	Footnotes(4)(5)(6)(8)
Class A Common Stock	04/15/2026		S		130,474	D	$118.57(2)	2,853,322	I	Footnotes(4)(5)(6)(8)
Class A Common Stock	04/15/2026		S		32,049	D	$119.34(3)	2,821,273	I	Footnotes(4)(5)(6)(8)
Class A Common Stock	04/15/2026		S		2,087	D	$117.79(1)	859,938	I	Footnotes(4)(5)(6)(9)
Class A Common Stock	04/15/2026		S		27,329	D	$118.57(2)	832,609	I	Footnotes(4)(5)(6)(9)
Class A Common Stock	04/15/2026		S		6,715	D	$119.34(3)	825,894	I	Footnotes(4)(5)(6)(9)
Class A Common Stock								1,973,782	I	Footnotes(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)
				Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount 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

	Director	X	10% 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

	Director	X	10% 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

	Director	X	10% 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

	Director	X	10% 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 LLC	04/17/2026
	/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 LP	04/17/2026
	/s/ Hayley A. Stein, Attorney-in-Fact for David J. Snyderman, as Administrative Manager of Supernova Management LLC	04/17/2026
	/s/ Hayley A. Stein, Attorney-in-Fact for David J. Snyderman	04/17/2026
	** Signature of Reporting Person	Date
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)