Schedule 13G/A: Cogen Discloses 17.13M CoreWeave Shares (4.5%)

Rhea-AI Filing Summary

Jack D. Cogen reported beneficial ownership of 17,129,596 shares of CoreWeave, Inc. Class A common stock, representing 4.5% of the class. The filing states he has sole voting and dispositive power over 16,993,036 shares and shared voting and dispositive power over 136,560 shares. The Schedule 13G/A identifies the issuer's principal executive office in Livingston, New Jersey, and lists Cogen's business address as c/o TAG Associates LLC in New York. The filing indicates this ownership figure is below the 5% threshold that typically requires different reporting status and includes a signature dated October 1, 2025.

Positive

• Disclosure filed with detailed breakdown of sole vs shared voting and dispositive power for 17,129,596 shares
• Filer reports stake below 5%, indicating passive reporting status under common Schedule 13G thresholds

Negative

• None.

Insights

Securities Analyst

TL;DR: Investor disclosure shows a non-controlling 4.5% stake with primary voting control of most held shares.

The filing reports 17,129,596 Class A shares, equal to 4.5% of CoreWeave's Class A stock. Mr. Cogen holds sole voting and dispositive power over the bulk of those shares (16,993,036), with a smaller portion (136,560) held with shared power. Because the stake is reported as 4.5%, it remains below the common 5% reporting threshold that would trigger Schedule 13D treatment, which suggests a passive holding classification under Rule 13d-1(b)/(c). The disclosure is complete for ownership items and includes required identification details.

Corporate Governance Expert

TL;DR: The filing is a routine beneficial-ownership disclosure showing limited influence given sub-5% stake.

The Schedule 13G/A provides clear ownership breakdown between sole and shared powers, which is useful for governance transparency. With sole control over most shares reported, Mr. Cogen can exercise voting rights on many of his shares, but a 4.5% economic stake generally confers limited ability to unilaterally influence corporate actions. The document includes standard issuer and filer addresses and a dated signature, meeting formal filing requirements.

SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

SCHEDULE 13G

UNDER THE SECURITIES EXCHANGE ACT OF 1934

(Amendment No. 1)

CoreWeave, Inc.

(Name of Issuer)

Class A common stock, par value 0.000005 per share

(Title of Class of Securities)

21873S108

(CUSIP Number)

09/30/2025

(Date of Event Which Requires Filing of this Statement)

Check the appropriate box to designate the rule pursuant to which this Schedule is filed:

Rule 13d-1(b)

Rule 13d-1(c)

Rule 13d-1(d)

SCHEDULE 13G

CUSIP No. 21873S108

1

Names of Reporting Persons

Cogen Jack D

2

Check the appropriate box if a member of a Group (see instructions)

(a)
(b)

3

Sec Use Only

4

Citizenship or Place of Organization

UNITED STATES

Number of Shares Beneficially Owned by Each Reporting Person With:

5	Sole Voting Power 16,993,036.00
6	Shared Voting Power 136,560.00
7	Sole Dispositive Power 16,993,036.00
8	Shared Dispositive Power 135,560.00

9

Aggregate Amount Beneficially Owned by Each Reporting Person

17,129,596.00

10

Check box if the aggregate amount in row (9) excludes certain shares (See Instructions)

11

Percent of class represented by amount in row (9)

4.5 %

12

Type of Reporting Person (See Instructions)

IN

SCHEDULE 13G

Item 1.
(a)	Name of issuer: CoreWeave, Inc.
(b)	Address of issuer's principal executive offices: 290 W Mt. Pleasant Ave., Suite 4100, Livingston, New Jersey, 07039
Item 2.
(a)	Name of person filing: Jack Cogen
(b)	Address or principal business office or, if none, residence: c/o TAG Associates LLC, 810 Seventh Avenue, 7th Floor, New York, NY 10019-5890
(c)	Citizenship: United States of America
(d)	Title of class of securities: Class A common stock, par value 0.000005 per share
(e)	CUSIP No.: 21873S108
Item 3.	If this statement is filed pursuant to §§ 240.13d-1(b) or 240.13d-2(b) or (c), check whether the person filing is a:
(a)	Broker or dealer registered under section 15 of the Act (15 U.S.C. 78o);
(b)	Bank as defined in section 3(a)(6) of the Act (15 U.S.C. 78c);
(c)	Insurance company as defined in section 3(a)(19) of the Act (15 U.S.C. 78c);
(d)	Investment company registered under section 8 of the Investment Company Act of 1940 (15 U.S.C. 80a-8);
(e)	An investment adviser in accordance with § 240.13d-1(b)(1)(ii)(E);
(f)	An employee benefit plan or endowment fund in accordance with § 240.13d-1(b)(1)(ii)(F);
(g)	A parent holding company or control person in accordance with § 240.13d-1(b)(1)(ii)(G);
(h)	A savings associations as defined in Section 3(b) of the Federal Deposit Insurance Act (12 U.S.C. 1813);
(i)	A church plan that is excluded from the definition of an investment company under section 3(c)(14) of the Investment Company Act of 1940 (15 U.S.C. 80a-3);
(j)	A non-U.S. institution in accordance with § 240.13d-1(b)(1)(ii)(J). If filing as a non-U.S. institution in accordance with § 240.13d-1(b)(1)(ii)(J), please specify the type of institution:
(k)	Group, in accordance with Rule 240.13d-1(b)(1)(ii)(K).
Item 4.	Ownership
(a)	Amount beneficially owned: 17,129,596
(b)	Percent of class: 4.5 %
(c)	Number of shares as to which the person has:
	(i) Sole power to vote or to direct the vote: 16,993,036
	(ii) Shared power to vote or to direct the vote: 136,560
	(iii) Sole power to dispose or to direct the disposition of: 16,993,036
	(iv) Shared power to dispose or to direct the disposition of: 136,560
Item 5.	Ownership of 5 Percent or Less of a Class.
	Ownership of 5 percent or less of a class
Item 6.	Ownership of more than 5 Percent on Behalf of Another Person.
	Not Applicable
Item 7.	Identification and Classification of the Subsidiary Which Acquired the Security Being Reported on by the Parent Holding Company or Control Person.
	Not Applicable
Item 8.	Identification and Classification of Members of the Group.
	Not Applicable
Item 9.	Notice of Dissolution of Group.
	Not Applicable

Item 10.	Certifications:
	Not Applicable

SIGNATURE

After reasonable inquiry and to the best of my knowledge and belief, I certify that the information set forth in this statement is true, complete and correct.

Cogen Jack D

Signature:	/s/ Jack D. Cogen
Name/Title:	Jack D. Cogen
Date:	10/01/2025

FAQ

How many CoreWeave (CRWV) Class A shares does Jack D. Cogen beneficially own?

Jack D. Cogen beneficially owns 17,129,596 Class A shares, equal to 4.5% of the class.

What voting power does Jack D. Cogen have over his CoreWeave shares?

He has sole voting power over 16,993,036 shares and shared voting power over 136,560 shares.

Where is CoreWeave's principal executive office listed in the filing?

The filing lists the principal executive office at 290 W Mt. Pleasant Ave., Suite 4100, Livingston, New Jersey.

What is the filer’s address for Jack D. Cogen on this Schedule 13G/A?

Cogen's address is given as c/o TAG Associates LLC, 810 Seventh Avenue, 7th Floor, New York, NY 10019-5890.

What date is shown on the signature of the Schedule 13G/A?

The document is signed by Jack D. Cogen and dated 10/01/2025.