Hudson Technologies holder buys 5,317 shares

HUDSON TECHNOLOGIES INC /NY (HDSN) had a Form 4 filed for Hartree Partners, LP, a ten percent owner, reporting an open-market purchase of 5,317 shares of common stock on September 2, 2026, at $5.10 per share.

Rhea-AI Filing Summary

HUDSON TECHNOLOGIES INC /NY (HDSN) had a Form 4 filed for Hartree Partners, LP, a ten percent owner, reporting an open-market purchase of 5,317 shares of common stock on September 2, 2026, at $5.10 per share. Following this transaction, the reporting party is shown holding 5,205,317 shares, with beneficial ownership disclaimed except to the extent of its pecuniary interest.

Insider Trade Summary

Net Buyer: 5,317 shares

Net Buy 1 txn

Insider Hartree Partners, LP

Role 10% Owner

Bought 5,317 shs ($27K)

Type	Security	Shares	Price	Value
Purchase	Common Stock, par value $0.01 F1	5,317	$5.10	$27K

Holdings After Transaction: Common Stock, par value $0.01 — 5,205,317 shares (Direct)

Footnotes (1)

1. F1. The Reporting Person disclaims beneficial ownership of the securities reported herein except to the extent of its pecuniary interest therein, and this report shall not be deemed to be an admission that the Reporting Person is the beneficial owner of such securities for purposes of Section 16 or for any other purpose.

Key Figures

Shares purchased: 5,317 shares Purchase price per share: $5.10 per share Shares owned after transaction: 5,205,317 shares +2 more

5 metrics

Shares purchased 5,317 shares Common stock acquired on September 2, 2026

Purchase price per share $5.10 per share Open-market or private purchase on September 2, 2026

Shares owned after transaction 5,205,317 shares Common stock reported as owned following the September 2, 2026 purchase

Net buy shares reported 5,317 shares Net effect of all Form 4 transactions reported for September 2, 2026

Number of buy transactions 1 transaction Open-market or private purchase recorded in this Form 4

Key Terms

beneficial ownership, pecuniary interest, Section 16, ten percent owner

4 terms

beneficial ownership regulatory

"disclaims beneficial ownership of the securities reported herein except to the extent"

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

"except to the extent of its pecuniary interest therein"

Section 16 regulatory

"beneficial owner of such securities for purposes of Section 16 or for any other purpose"

Section 16 is a U.S. securities law rule that governs the trading and disclosure obligations of company insiders — typically officers, directors and large shareholders — to promote transparency and deter unfair profit-taking. It requires insiders to publicly report their stock trades and allows companies or the issuer to reclaim quick, short-term profits from certain insider trades, like a scoreboard and a refund policy that help investors see and limit possible insider advantage.

ten percent owner regulatory

"Hartree Partners, LP, a ten percent owner"

FAQ

What insider transaction did HDSN disclose in this Form 4?

The filing reports that Hartree Partners, LP, a ten percent owner, purchased 5,317 shares of Hudson Technologies common stock on September 2, 2026, in an open-market or private transaction at $5.10 per share.

How many HDSN shares does Hartree Partners, LP report owning after this transaction?

After the reported purchase, Hartree Partners, LP is shown as holding 5,205,317 shares of Hudson Technologies common stock, while disclaiming beneficial ownership except to the extent of its pecuniary interest.

Was the HDSN insider trade made under a Rule 10b5-1 trading plan?

No. The Form 4 indicates that the Rule 10b5-1 checkbox is not selected, and there is no footnote stating that the September 2, 2026 purchase was made pursuant to a Rule 10b5-1 trading plan.

What price did the ten percent owner pay per HDSN share?

Hartree Partners, LP reported paying $5.10 per share for the 5,317 shares of Hudson Technologies common stock purchased on September 2, 2026, with the price reported on a per-share basis.

Does Hartree Partners, LP claim full beneficial ownership of its reported HDSN shares?

No. Hartree Partners, LP expressly disclaims beneficial ownership of the reported Hudson Technologies shares except to the extent of its pecuniary interest, and states that the report is not an admission of beneficial ownership for Section 16 or other purposes.

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Available on EDGAR 09/04/2026 - 05:44 PM Accepted by SEC EDGAR 09/04/2026 - 05:43 PM 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^*

Hartree Partners, LP

(Last) (First) (Middle)

1185 AVE OF THE AMERICAS

(Street)

NEW YORK NEW YORK 10036

(City) (State) (Zip)

UNITED STATES

(Country)

2. Issuer Name and Ticker or Trading Symbol
HUDSON TECHNOLOGIES INC /NY [ HDSN ]

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)
09/02/2026

6. Individual or Joint/Group Filing (Check Applicable Line)

X	Form filed by One Reporting Person
	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
Common Stock, par value $0.01(1)	09/02/2026		P		5,317	A	$5.1	5,205,317	D

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

Explanation of Responses:

1. The Reporting Person disclaims beneficial ownership of the securities reported herein except to the extent of its pecuniary interest therein, and this report shall not be deemed to be an admission that the Reporting Person is the beneficial owner of such securities for purposes of Section 16 or for any other purpose.

	Hartree Partners, LP, By: /s/ Christine Stevenson, Chief Compliance Officer	09/04/2026
	** 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)