Hartree Partners (HDSN) adds 5,234 Hudson Technologies shares in open-market buys

Rhea-AI Filing Summary

Hartree Partners, LP, a 10% owner of HUDSON TECHNOLOGIES INC /NY, reported open-market purchases of common stock. It bought 4,634 shares on July 6, 2026 and 600 shares on July 7, 2026, both at $5.99 per share, for a total of 5,234 shares. After these trades, Hartree Partners directly held 4,976,536 shares. The filer disclaims beneficial ownership beyond its pecuniary interest in these securities.

Insider Trade Summary

Net Buyer: 5,234 shares ($31,352)

Net Buy 2 txns

Insider Hartree Partners, LP

Role null

Bought 5,234 shs ($31K)

Type	Security	Shares	Price	Value
Purchase	Common Stock, par value $0.01	600	$5.99	$4K
Purchase	Common Stock, par value $0.01	4,634	$5.99	$28K

Holdings After Transaction: Common Stock, par value $0.01 — 4,976,536 shares (Direct, null)

Footnotes (1)

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Key Figures

Shares bought July 6, 2026: 4,634 shares Shares bought July 7, 2026: 600 shares Total shares bought: 5,234 shares +3 more

6 metrics

Shares bought July 6, 2026 4,634 shares Open-market purchase at $5.99 per share

Shares bought July 7, 2026 600 shares Open-market purchase at $5.99 per share

Total shares bought 5,234 shares Combined open-market purchases in this Form 4

Purchase price $5.99/share Price for both reported transactions

Shares held after trades 4,976,536 shares Direct ownership following July 7, 2026 purchase

Insider status 10% owner Hartree Partners classified as ten percent owner

Key Terms

open-market purchase, beneficial ownership, pecuniary interest, Section 16

4 terms

open-market purchase financial

"transaction_action: open-market purchase"

An open-market purchase is when an investor or a company buys shares on a public stock exchange at the going market price, rather than through a private deal. It matters to investors because these purchases change how many shares are available, can push the stock price up or signal confidence from large buyers, and often affect per-share metrics like earnings—think of it like someone buying lots of apples off a grocery shelf, reducing supply and potentially raising the price.

beneficial ownership regulatory

"disclaims beneficial ownership of the securities reported herein"

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

"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.

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Form 4 Insider Transactions: What Each Field Means →

Available on EDGAR 07/08/2026 - 05:10 PM Accepted by SEC EDGAR 07/08/2026 - 05:10 PM Learn about SEC filing dates

FAQ

What insider activity did Hartree Partners report for HDSN?

Hartree Partners, LP reported open-market purchases of Hudson Technologies (HDSN) common stock. It bought a total of 5,234 shares across two days at $5.99 per share, increasing its direct holdings to 4,976,536 shares.

On what dates did Hartree Partners buy Hudson Technologies (HDSN) shares?

Hartree Partners bought Hudson Technologies (HDSN) common stock on July 6, 2026 and July 7, 2026. These were reported as open-market purchases in a Form 4 filing, with both trades executed at a price of $5.99 per share.

How many Hudson Technologies shares does Hartree Partners hold after these trades?

Following the reported transactions, Hartree Partners directly holds 4,976,536 shares of Hudson Technologies common stock. This figure reflects its position after buying a combined 5,234 shares over two consecutive trading days at $5.99 per share.

What prices did Hartree Partners pay for HDSN stock in this Form 4?

Hartree Partners paid $5.99 per share for both reported purchases of Hudson Technologies stock. It acquired 4,634 shares on July 6, 2026 and 600 shares on July 7, 2026, all at this same per-share price.

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

Hartree Partners includes a beneficial ownership disclaimer in the Form 4. It states that it disclaims beneficial ownership of the reported securities except to the extent of its pecuniary interest, a common legal safeguard in Section 16 filings.

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)
07/06/2026

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)	07/06/2026		P		4,634	A	$5.99	4,975,936	D
Common Stock, par value $0.01(1)	07/07/2026		P		600	A	$5.99	4,976,536	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	07/08/2026
	** 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)