Westerly Capital discloses 5.9% Hudson Technologies (HDSN) stake

Rhea-AI Filing Summary

Hudson Technologies Inc. received an updated Schedule 13G/A showing that Westerly Capital Management, LLC beneficially owns 2,550,000 shares of its common stock, all with shared voting and shared dispositive power. This stake represents 5.9% of the outstanding common shares.

The ownership percentage is based on 43,598,202 Hudson Technologies common shares outstanding as of October 20, 2025, as reported in a prior Form 10-Q. Westerly certifies that the securities were acquired and are held on a passive basis, not for the purpose of changing or influencing control of the company.

SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

SCHEDULE 13G

UNDER THE SECURITIES EXCHANGE ACT OF 1934

(Amendment No. 1)

HUDSON TECHNOLOGIES INC /NY

(Name of Issuer)

Common Stock, $0.01 par value

(Title of Class of Securities)

444144109

(CUSIP Number)

12/31/2025

(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. 444144109

1

Names of Reporting Persons

WESTERLY CAPITAL MANAGEMENT, LLC

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

DELAWARE

Number of Shares Beneficially Owned by Each Reporting Person With:

5	Sole Voting Power 0.00
6	Shared Voting Power 2,550,000.00
7	Sole Dispositive Power 0.00
8	Shared Dispositive Power 2,550,000.00

9

Aggregate Amount Beneficially Owned by Each Reporting Person

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)

5.9 %

12

Type of Reporting Person (See Instructions)

IA

SCHEDULE 13G

Item 1.
(a)	Name of issuer: HUDSON TECHNOLOGIES INC /NY
(b)	Address of issuer's principal executive offices: PO BOX 1541, ONE BLUE HILL PLAZA, 14TH FLOOR, PEARL RIVER, NEW YORK, 10965.
Item 2.
(a)	Name of person filing: Westerly Capital Management, LLC
(b)	Address or principal business office or, if none, residence: Westerly Capital Management, LLC 201 Mission Street, Suite 580 San Francisco, CA 94105
(c)	Citizenship: For citizenship of the Filer, see Item 4 of the cover sheet.
(d)	Title of class of securities: Common Stock, $0.01 par value
(e)	CUSIP No.: 444144109
Item 4.	Ownership
(a)	Amount beneficially owned: Information with respect to the Reporting Person's ownership of the Common Stock as of December 31, 2025, is incorporated by reference to items (5) - (9) and (11) of the cover page of the respective Reporting Person. The amount beneficially owned by each Reporting Person is determined based on 43,598,202 shares of Common Stock outstanding as of October 20, 2025, as reported in the Form 10-Q for the quarterly period ended September 30, 2025, filed with the SEC on November 7, 2025.
(b)	Percent of class:
(c)	Number of shares as to which the person has:
	(i) Sole power to vote or to direct the vote:
	(ii) Shared power to vote or to direct the vote:
	(iii) Sole power to dispose or to direct the disposition of:
	(iv) Shared power to dispose or to direct the disposition of:
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:

By signing below I certify that, to the best of my knowledge and belief, the securities referred to above were not acquired and are not held for the purpose of or with the effect of changing or influencing the control of the issuer of the securities and were not acquired and are not held in connection with or as a participant in any transaction having that purpose or effect, other than activities solely in connection with a nomination under § 240.14a-11.

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.

WESTERLY CAPITAL MANAGEMENT, LLC

Signature:	/s/ Christopher J. Galvin
Name/Title:	Christopher J. Galvin, Managing Member
Date:	02/17/2026

FAQ

What ownership stake in HDSN does Westerly Capital report in this Schedule 13G/A?

Westerly Capital Management, LLC reports beneficial ownership of 2,550,000 shares of Hudson Technologies common stock. Based on 43,598,202 shares outstanding, this position represents 5.9% of the company’s common stock, indicating a sizable but minority passive stake.

Is Westerly Capital seeking control of Hudson Technologies (HDSN) with this stake?

No. Westerly Capital certifies the shares were not acquired and are not held for the purpose of changing or influencing control of Hudson Technologies. The filing states the position is held on a passive basis, consistent with a Schedule 13G filing.

How many Hudson Technologies (HDSN) shares were outstanding for this 5.9% calculation?

The 5.9% ownership figure is calculated using 43,598,202 shares of Hudson Technologies common stock outstanding as of October 20, 2025, as reported in the company’s Form 10-Q for the quarter ended September 30, 2025.

What voting and dispositive powers does Westerly Capital have over HDSN shares?

Westerly Capital reports 0 shares with sole voting or sole dispositive power and 2,550,000 shares with shared voting and shared dispositive power. This means control over voting and potential sale of the shares is shared rather than individually held.

Who signed the Schedule 13G/A reporting Westerly’s HDSN position?

The Schedule 13G/A was signed by Christopher J. Galvin, identified as Managing Member of Westerly Capital Management, LLC. His signature certifies, to the best of his knowledge and belief, that the information in the statement is true, complete, and correct.