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See how Context works →On the price, the facts of the public record■Insider buy□Insider sell◇Significant stake declared (13D)●Results filed
With an account, also○dividends▲splits◌next earningswith an account
End-of-day prices provided by Twelve Data · One close per session; the series does not update during the trading day.
Latest on record
The most recent facts, as filed.
Up to three of the most recent, checkable facts already loaded on this page, each linked to its source.
- Sep 24, 2026Reported purchase · Form 4Hartree Partners, LP · $604.4KOpen the filing ↗
- Sep 23, 2026Reported purchase · Form 4Hartree Partners, LP · $56.2KOpen the filing ↗
- Sep 21, 2026Reported purchase · Form 4Hartree Partners, LP · $12.8KOpen the filing ↗
In numbers
What this profile holds, counted.
Closes · 1 year250
SEC filings on record1,07810 flagged findings
Reported transactions (Form 4)80since Jun 14, 2023 · and 10 other holdings
Corporate events (8-K)30since Jul 20, 2020
What the record says
Description, identity and filings, each with its source.
Every block cites its source. The colour of a finding marks its category — which document, who filed it — not how much it matters.
The 25 most recent filings (of 1,078)
Every SEC filing, newest first, with what it is. Below, each type with its own explanation.
- Aug 7, 2610-Q ↗Quarterly report
- Aug 6, 268-K ↗Current report · Other events
- Aug 5, 268-K ↗Current report · Results
- Jul 14, 26SCHEDULE 13G/A ↗Passive stake · Dimensional Fund Advisors LP · 4.7% · event on Jun 30, 26 · amendment
- Jul 2, 26Form 3 ↗Insider transaction
- Jul 2, 26SCHEDULE 13G/A ↗Passive stake · Hartree Partners, LP · 11.8% · event on Jun 30, 26 · amendment
- Jun 12, 268-K ↗Current report · Other events
- Jun 11, 268-K ↗Current report · Shareholder vote results
- Jun 5, 26SCHEDULE 13G ↗Passive stake · Hartree Partners, LP · 9.0%
1,078 filings on record, the oldest from Feb 7, 97.
Listing the 25 most recent filings of the 1,078 on record.
76934
- May 20, 26Entered a material agreement+2 more in the same filing8-K 1.01 ↗
4 senior executive changes2025 – 2026show all 4hide
- Apr 13, 26A senior executive left or was appointed+2 more in the same filing8-K 5.02 ↗
- Mar 18, 26A senior executive left or was appointed+2 more in the same filing8-K 5.02 ↗
- Feb 2, 26A senior executive left or was appointed+1 more in the same filing8-K 5.02 ↗
- Dec 9, 25A senior executive left or was appointed8-K 5.02 ↗
- Dec 1, 25Entered a material agreement+3 more in the same filing8-K 1.01 ↗
- Nov 13, 25A senior executive left or was appointed+2 more in the same filing8-K 5.02 ↗
- Nov 3, 25A senior executive left or was appointed+3 more in the same filing8-K 5.02 ↗
- Jun 23, 25Took on a new financial obligation+2 more in the same filing8-K 2.03 ↗
- Oct 25, 24Entered a material agreement+3 more in the same filing8-K 1.01 ↗
- Jul 30, 24A senior executive left or was appointed+2 more in the same filing8-K 5.02 ↗
- Jun 7, 24Entered a material agreement+2 more in the same filing8-K 1.01 ↗
- Oct 12, 23A senior executive left or was appointed+2 more in the same filing8-K 5.02 ↗
- Aug 22, 23A material agreement was terminated+2 more in the same filing8-K 1.02 ↗
- Feb 23, 23A senior executive left or was appointed8-K/A 5.02 ↗
7 older filings not shown · The record reaches back to Nov 3, 04.
Stress disclosures older than the timeline above. They are individual events from the record, not a complete timeline: there may be more between them.
- Apr 20, 20Listing notice (8-K 3.01)8-K 3.01 ↗
- Jan 30, 20Listing notice (8-K 3.01)8-K 3.01 ↗
- Aug 2, 19Listing notice (8-K 3.01)8-K 3.01 ↗
- Aug 16, 18Listing notice (8-K 3.01)+1 more in the same filing8-K 3.01 ↗
- Dec 11, 07Listing notice (8-K 3.01)8-K 3.01 ↗
- May 16, 05Listing notice (8-K 3.01)8-K 3.01 ↗
- Apr 29, 05Listing notice (8-K 3.01)8-K 3.01 ↗
The full record holds 7 stress filings.
Corporate events are tracked from 2004-08-23, when the SEC renumbered 8-K items. Earlier filings use an incompatible numbering and are not classified here.
Schedule 13D: stake and stated purpose
Filed by holders above 5% of a share class who cannot use the short form. It includes the investor's stated purpose: read it before assuming they seek influence.
- Hartree Partners, LP8.7%Dec 8, 25SCHEDULE 13D ↗
Schedule 13G: short-form filing
The short form, for holders who meet specific requirements: institutional investors, passive investors without a control purpose, or exempt investors. Asset managers and index funds usually file it.
- Hartree Partners, LP11.8%Jun 30, 26SCHEDULE 13G/A ↗3 earlier filings
- WESTERLY CAPITAL MANAGEMENT, LLC5.9%Dec 31, 25SCHEDULE 13G/A ↗1 earlier filing
- Dimensional Fund Advisors LP4.7%Jun 30, 26SCHEDULE 13G/A ↗1 earlier filing
Structured 13D/G data starts 2023-12, when the SEC moved these filings to a machine-readable format. Earlier filings exist but are not parsed here.
- Sep 24, 26Buy$604KHartree Partners, LP↗
- Sep 23, 26Buy$56KHartree Partners, LP↗
- Sep 21, 26Buy$13KHartree Partners, LP↗
- Sep 16, 26Buy$57KHartree Partners, LP↗
- Sep 2, 26Buy$27KHartree Partners, LP↗
- Aug 25, 26Buy$501KHartree Partners, LP↗
- Aug 24, 26Buy$52KHartree Partners, LP↗
- Aug 12, 26Buy$29KHartree Partners, LP↗
- Jul 29, 26Buy$312KHartree Partners, LP↗
- Jul 21, 26Buy$286KHartree Partners, LP↗
- Jul 20, 26Buy$107KHartree Partners, LP↗
- Jul 7, 26Buy$4KHartree Partners, LP↗
There are 16 more transactions in this stretch.
Stock compensation, tax and giftsshow the 12 other transactionshide
Stock compensation, tax withholding, option exercises and gifts. They are listed separately and are not included in the purchase and sale totals. The type describes the transaction, not the filer's intent.
- Jun 17, 26Compensationamount n/aJeffrey R Feeler↗
- Jun 17, 26Compensationamount n/aLoan Nguyen Mansy↗
- Jun 17, 26Compensationamount n/aEric A Prouty↗
- Jun 17, 26Compensationamount n/aAlan Sheriff↗
- Apr 10, 26Compensationamount n/aJeffrey R Feeler↗
- Apr 10, 26Compensationamount n/aAlan Sheriff↗
- Jan 8, 26Compensation$90KKathleen HoughtonSr. VP-Sales and Marketing↗
- Jan 8, 26Tax$319KKathleen HoughtonSr. VP-Sales and Marketing↗
- Jan 8, 26Compensation$76KKathleen HoughtonSr. VP-Sales and Marketing↗
- Jan 8, 26Tax$155KKathleen HoughtonSr. VP-Sales and Marketing↗
- Jan 8, 26Compensation$194KKathleen HoughtonSr. VP-Sales and Marketing↗
- Jan 8, 26Tax$244KKathleen HoughtonSr. VP-Sales and Marketing↗
The full record holds 95 transactions and goes back to Jun 9, 21.
Its sector and its market
Hudson Technologies Inc. among Materials companies
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- 250 clean closes in the period.
- SEC records
- 1,078 documents on file, from Feb 7, 1997 to Sep 28, 2026.
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Those filed with the SEC by the company, its insiders and its major shareholders, within our coverage: periodic reports (10-K, 10-Q, 20-F), material events (8-K), proposed sale notices (Form 144), insider transactions (Form 4) and stakes above 5% (13D/13G). Each links to the original on EDGAR.
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