[SCHEDULE 13G] Hudson Technologies Inc SEC Filing

Rhea-AI Filing Summary

Westerly Capital Management, LLC has filed a Schedule 13G disclosing a passive ownership of 2,600,000 shares of Hudson Technologies Inc. (HDSN), representing 6.0 % of the 43,480,721 shares outstanding as of 30 April 2025. The event that triggered the filing occurred on 16 June 2025 and the document was signed on 24 June 2025.

The filing shows shared voting and dispositive power over the entire stake, with no sole authority, and classifies Westerly as an investment adviser (Type IA) under Rule 13d-1(b). The certifying language confirms that the position is held strictly for investment purposes and not to influence control of the issuer.

Because the holding exceeds the 5 % threshold, the disclosure is material: it introduces a sizeable professional investor to Hudson Technologies’ register, potentially improving liquidity and institutional visibility. However, the use of Form 13G (rather than 13D) indicates no activist agenda, so governance impact is expected to be limited unless Westerly later amends its status.

In summary, the Schedule 13G signals incremental institutional confidence in Hudson Technologies without foreshadowing strategic pressure on management. Market reaction will hinge on how investors weigh the supportive sentiment against the passive nature of the stake.

Positive

• Westerly Capital Management’s 6.0 % stake introduces a new institutional holder, signaling confidence in Hudson Technologies’ prospects and potentially improving share liquidity.

Negative

• None.

Insights

Portfolio Manager

TL;DR: 6 % passive stake by Westerly bolsters institutional ownership—modestly bullish for sentiment and liquidity.

Crossing the 5 % threshold with 2.6 million shares, Westerly’s entry meaningfully absorbs free float in a company of roughly 43 million shares. A reputable investment adviser adding a mid-single-digit holding can steady the shareholder base and attract additional institutions that follow peer ownership moves. Because the filing is Form 13G, there is no immediate activist catalyst, but the position confirms Westerly’s fundamental conviction. All else equal, the stake reduces supply overhang and signals confidence, offering a mild positive read-through for the share price.

Corporate Governance Analyst

TL;DR: Passive 13G means limited governance impact; ownership concentration edges up but control remains unchanged.

Westerly declares shared, not sole, voting authority and explicitly disclaims any intent to influence control, satisfying the passive requirements of Rule 13d-1(b). Consequently, board dynamics and strategic direction are unaffected in the near term. The single block slightly raises ownership concentration to roughly 6 %, but with no activist stance the filing mainly enhances transparency rather than altering governance risk. Investors should monitor future amendments for any shift to a 13D.

SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

SCHEDULE 13G

UNDER THE SECURITIES EXCHANGE ACT OF 1934

HUDSON TECHNOLOGIES INC /NY

(Name of Issuer)

Common Stock, $0.01 par value per share

(Title of Class of Securities)

444144109

(CUSIP Number)

06/16/2025

(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 2,600,000.00
7	Sole Dispositive Power 0.00
8	Shared Dispositive Power 2,600,000.00

9

Aggregate Amount Beneficially Owned by Each Reporting Person

2,600,000.00

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)

6.0 %

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 per share
(e)	CUSIP No.: 444144109
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: The amount beneficially owned by each Reporting Person is determined based on 43,480,721 shares of Common Stock outstanding as of April 30, 2025, as reported in the Form 10-Q for the quarterly period ended March 31, 2025 filed with the SEC on May 9, 2025.
(b)	Percent of class: 6.0%
(c)	Number of shares as to which the person has:
	(i) Sole power to vote or to direct the vote: 0.00%
	(ii) Shared power to vote or to direct the vote: 2,600,000.00
	(iii) Sole power to dispose or to direct the disposition of: 0
	(iv) Shared power to dispose or to direct the disposition of: 0
Item 5.	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:

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:	Christopher J. Galvin
Name/Title:	Managing Member
Date:	06/24/2025

FAQ

What percentage of Hudson Technologies (HDSN) shares does Westerly Capital Management own?

The Schedule 13G reports ownership of 6.0 %, equal to 2,600,000 shares.

Is Westerly Capital Management an activist or passive investor in this filing?

The use of Schedule 13G and the certification language indicate a passive investment with no intent to influence control.

What is the CUSIP number for Hudson Technologies common stock?

The CUSIP listed in the filing is 444144109.

When did the ownership event triggering the 13G occur?

The relevant event date is 16 June 2025.

How many Hudson Technologies shares were outstanding for the ownership calculation?

The filing references 43,480,721 shares outstanding as of 30 April 2025.

Does Westerly have sole or shared voting power over its HDSN shares?

Westerly reports shared voting and dispositive power over all 2,600,000 shares; it has no sole authority.