Magnetar-linked funds trim CoreWeave (CRWV) stake with 209,157-share sale

Rhea-AI Filing Summary

CoreWeave, Inc. saw significant insider-related selling activity by investment funds advised by Magnetar entities. On May 1, 2026, Magnetar-managed funds reported open-market sales totaling 209,157 shares of CoreWeave Class A Common Stock at prices generally around $119–$121 per share.

The trades were executed in multiple blocks, with weighted average prices and detailed price ranges from $118.74 to $121.50. According to the disclosure, Magnetar Financial LLC acts as investment adviser to several Magnetar funds, and related upstream entities, including Magnetar Capital Partners LP, Supernova Management LLC, and David J. Snyderman, disclaim beneficial ownership of these shares except to the extent of their pecuniary interest.

Insider Trade Summary

Net Seller: 209,157 shares ($25,080,696)

Net Sell 10 txns

Insider Magnetar Financial LLC, Magnetar Capital Partners LP, Supernova Management LLC, Snyderman David J.

Role null | null | null | null

Sold 209,157 shs ($25.08M)

Type	Security	Shares	Price	Value
Sale	Class A Common Stock	16,637	$119.20	$1.98M
Sale	Class A Common Stock	80,437	$119.93	$9.65M
Sale	Class A Common Stock	8,864	$121.10	$1.07M
Sale	Class A Common Stock	13,400	$119.20	$1.60M
Sale	Class A Common Stock	64,799	$119.93	$7.77M
Sale	Class A Common Stock	7,140	$121.10	$865K
Sale	Class A Common Stock	2,808	$119.20	$335K
Sale	Class A Common Stock	13,577	$119.93	$1.63M
Sale	Class A Common Stock	1,495	$121.10	$181K
holding	Class A Common Stock	--	--	--

Holdings After Transaction: Class A Common Stock — 2,554,841 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 $118.74 to $119.70, 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 footnote 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 $119.75 to $120.70, inclusive. The price reported in Column 4 is a weighted average price. These securities were sold in multiple transactions at prices ranging from $121.00 to $121.50, inclusive. Magnetar Financial LLC ("Magnetar Financial") serves as the investment adviser to each of Longhorn Special Opportunities Fund LP, Magnetar Xing He Master Fund Ltd, Purpose Alternative Credit Fund - F LLC, and Purpose Alternative Credit Fund - T 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 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.

Key Figures

Shares sold: 209,157 shares Single sale block: 13,577 shares at $119.93 Single sale block: 64,799 shares at $119.93 +5 more

8 metrics

Shares sold 209,157 shares Aggregate CoreWeave Class A shares sold on May 1, 2026

Single sale block 13,577 shares at $119.93 One open-market sale of CoreWeave Class A Common Stock

Single sale block 64,799 shares at $119.93 Another open-market sale of CoreWeave Class A Common Stock

Higher-priced block 8,864 shares at $121.10 CoreWeave Class A shares sold in a higher price range

Price range F1 $118.74–$119.70 Weighted average sale price range noted in Footnote 1

Price range F2 $119.75–$120.70 Weighted average sale price range noted in Footnote 2

Price range F3 $121.00–$121.50 Weighted average sale price range noted in Footnote 3

Indirect holdings example 2,554,841 shares Total CoreWeave shares shown as held indirectly after one transaction

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 Longhorn"

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

"disclaims beneficial ownership of these shares of Common Stock of the Issuer"

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 ... except to the extent of its or his pecuniary interest"

ten percent owner financial

"reporting persons are indicated as a ten percent owner in the meta data"

Form 4 Insider Transactions: What Each Field Means →

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)
05/01/2026

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	05/01/2026		S		16,637	D	$119.2(1)	2,554,841	I	Footnotes(4)(5)(6)(7)
Class A Common Stock	05/01/2026		S		80,437	D	$119.93(2)	2,474,404	I	Footnotes(4)(5)(6)(7)
Class A Common Stock	05/01/2026		S		8,864	D	$121.1(3)	2,465,540	I	Footnotes(4)(5)(6)(7)
Class A Common Stock	05/01/2026		S		13,400	D	$119.2(1)	2,510,161	I	Footnotes(4)(5)(6)(8)
Class A Common Stock	05/01/2026		S		64,799	D	$119.93(2)	2,445,362	I	Footnotes(4)(5)(6)(8)
Class A Common Stock	05/01/2026		S		7,140	D	$121.1(3)	2,438,222	I	Footnotes(4)(5)(6)(8)
Class A Common Stock	05/01/2026		S		2,808	D	$119.2(1)	760,710	I	Footnotes(4)(5)(6)(9)
Class A Common Stock	05/01/2026		S		13,577	D	$119.93(2)	747,133	I	Footnotes(4)(5)(6)(9)
Class A Common Stock	05/01/2026		S		1,495	D	$121.1(3)	745,638	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 $118.74 to $119.70, 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 footnote 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 $119.75 to $120.70, inclusive.

3. The price reported in Column 4 is a weighted average price. These securities were sold in multiple transactions at prices ranging from $121.00 to $121.50, inclusive.

4. Magnetar Financial LLC ("Magnetar Financial") serves as the investment adviser to each of Longhorn Special Opportunities Fund LP, Magnetar Xing He Master Fund Ltd, Purpose Alternative Credit Fund - F LLC, and Purpose Alternative Credit Fund - T LLC, (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	05/01/2026
	/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	05/01/2026
	/s/ Hayley A. Stein, Attorney-in-Fact for David J. Snyderman, as Administrative Manager of Supernova Management LLC	05/01/2026
	/s/ Hayley A. Stein, Attorney-in-Fact for David J. Snyderman	05/01/2026
	** 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)

FAQ

What insider activity did Magnetar report in CoreWeave (CRWV) shares?

Magnetar-managed funds reported open-market sales of 209,157 CoreWeave Class A shares on May 1, 2026. The trades were executed in multiple blocks at weighted average prices around $119–$121 per share, as disclosed in the Form 4 filing.

At what prices were the CoreWeave (CRWV) shares sold by Magnetar funds?

The reported CoreWeave share sales used weighted average prices near $119–$121 per share. Footnotes state transactions occurred in ranges from $118.74 to $119.70, $119.75 to $120.70, and $121.00 to $121.50 per share.

How many CoreWeave (CRWV) shares did Magnetar funds sell in this Form 4?

The Form 4 shows Magnetar-managed funds sold 209,157 CoreWeave Class A shares on May 1, 2026. These were reported as open-market or private sales, broken into several individual transactions with different share amounts and price ranges.

Who actually holds the CoreWeave (CRWV) shares associated with Magnetar in this filing?

Footnotes explain 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, with Magnetar Financial LLC serving as investment adviser.

Do Magnetar and its affiliates claim full beneficial ownership of the CoreWeave (CRWV) shares?

No. The filing states each Magnetar fund and related entities, including Magnetar Financial, Magnetar Capital Partners, Supernova Management, and David J. Snyderman, disclaim beneficial ownership except to the extent of their pecuniary interest in the CoreWeave shares.

What type of insider filing did CoreWeave (CRWV) receive from Magnetar?

CoreWeave received a Form 4 reporting changes in beneficial ownership of its Class A Common Stock by investment funds advised by Magnetar entities. The filing details multiple open-market sales, price ranges, and remaining indirect holdings for the reporting structures.