SCHEDULE 13G Filed 2026-06-05 Event — SEC 0000921895-26-001565 →

Hartree Partners, LP → HUDSON TECHNOLOGIES INC /NY HDSN

Stake: — Shares: — Class: Common Stock, par value $0.01

Item 4 — Purpose of Transaction

Not extracted from this filing — typically because it's an amendment (13D/A) and Item 4 is unchanged from the parent filing. Read the raw SEC filing →

Cross-References

Insider Activity (last 365d)

25 transactions

13 buys · 2 sales · 5 awards/exercises

Issuer Cluster

3 13D/G filings on this issuer

2 other filings besides this one

Filer Track Record

4 filings by this filer

3 other filings in the data moat

Short Interest · settle 2026-07-15

DTC 3.11

2,079,019 shares short · +12.1% vs prior

Form 4 Insider Transactions · last 365d

Date	Insider	Role	Type	Shares	Price	Value
2026-05-14	Mansy Loan Nguyen	director	Buy	3,600	$4.96	$18K
2026-05-14	Parrillo Richard	director	Buy	3,600	$4.96	$18K
2026-05-14	Bulgarino Nicole E	director	Buy	550	$4.84	$3K
2026-05-14	Feeler Jeffrey R	director	Buy	5,100	$4.92	$25K
2026-05-14	Parrillo Richard	director	Buy	1,400	$4.97	$7K
2026-05-14	Mansy Loan Nguyen	director	Buy	1,400	$4.97	$7K
2026-05-13	Prouty Eric A	director	Buy	5,000	$4.84	$24K
2026-05-13	Sheriff Alan	director	Buy	5,200	$4.88	$25K
2026-05-13	Gaglione Kenneth	director, officer	Buy	5,000	$4.89	$24K
2026-04-10	Sheriff Alan	director	Award	4,065	—	—
2026-04-10	Feeler Jeffrey R	director	Award	4,065	—	—
2026-01-08	Houghton Kathleen	director, officer	Option exercise	120,000	$0.75	$90K
2026-01-08	Houghton Kathleen	director, officer	F	44,873	$7.10	$319K
2026-01-08	Houghton Kathleen	director, officer	Option exercise	47,619	$1.60	$76K
2026-01-08	Houghton Kathleen	director, officer	F	21,797	$7.10	$155K
2026-01-08	Houghton Kathleen	director, officer	Option exercise	50,888	$3.81	$194K
2026-01-08	Houghton Kathleen	director, officer	F	34,382	$7.10	$244K
2025-12-05	COLEMAN BRIAN F	—	Sale	484,616	$7.40	$3.59M
2025-12-05	COLEMAN BRIAN F	director	Sale	484,616	$7.40	$3.59M
2025-11-24	Gaglione Kenneth	director, officer	Award	216,309	$6.70	$1.45M
2025-11-17	ABBATECOLA VINCENT P	director	Buy	3,500	$6.79	$24K
2025-09-24	ABBATECOLA VINCENT P	director	Option exercise	4,744	$7.35	$35K
2025-09-24	ABBATECOLA VINCENT P	director	F	3,519	$9.91	$35K
2025-07-31	Prouty Eric A	director	Option exercise	4,744	$7.35	$35K
2025-07-31	Prouty Eric A	director	F	3,713	$9.39	$35K

Other 13D/G Filings on HUDSON TECHNOLOGIES INC /NY

Filed	Form	Filer	Stake	Shares
2026-07-02	SCHEDULE 13G/A	Hartree Partners, LP	—	—	view →
2021-05-04	SC	ZUGIBE KEVIN J	—	—	view →

Other Filings by Hartree Partners, LP

Filed	Form	Issuer	Stake	Shares
2026-07-02	SCHEDULE 13G/A	HUDSON TECHNOLOGIES INC /NY HDSN	—	—	view →
2020-10-02	SC	Sprague Resources LP	—	—	view →
2020-09-30	SC	Sprague Resources LP	—	—	view →

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