Insiders who reported open-market trades in the last 12 months at the companies Hartree Partners, LP files at. Multiple unrelated insiders buying the same stock within a short window, cluster buying, has historically been one of the strongest Form 4 signals.
Richard Parrillo - $73K in HDSN purchases and sales in the last 12 months
Alan Sheriff - $25K in HDSN purchases and sales in the last 12 months
Jeffrey R. Feeler - $25K in HDSN purchases and sales in the last 12 months
Loan Nguyen Mansy - $25K in HDSN purchases and sales in the last 12 months
Kenneth Gaglione - $24K in HDSN purchases and sales in the last 12 months
Eric A. Prouty - $24K in HDSN purchases and sales in the last 12 months
More insiders (A-Z)
Browse nearby insider profiles in alphabetical order.
Hartree Partners, LP is an investment firm, tracked as 10% Owner of HUDSON TECHNOLOGIES INC /NY (HDSN). InsiderAlpha holds 10 primary Form 4 filings for it, the earliest from 2026, updated as new SEC EDGAR filings are processed.
How many SEC Form 4 filings has Hartree Partners, LP submitted recently?
8 primary Form 4 filings in the last 90 days, covering 1 company.
Has Hartree Partners, LP been buying or selling stock?
Recorded transactions: 16 open-market purchases ($6.55M) and 0 open-market sales across all tracked filings.
Hartree Partners, LP is 10% Owner of HUDSON TECHNOLOGIES INC /NY (HDSN). 10 SEC Form 4 filings on record, most recently on 28 September 2026. Most recent open-market trade: bought $604K of HDSN on 28 September 2026. Lifetime open-market purchases: $6.55M.
Recent transactions
16
The latest 16 SEC Form 4 transactions reported by Hartree Partners, LP.
InsiderAlpha's records for Hartree Partners, LP go back to 2026: 10 primary Form 4 filings, an average of 10.0 per year. The typical open-market purchase is $410K (16 buys totaling $6.55M). The largest single buy on record is $1.70M of HDSN in 2026. No recorded transaction carries a Rule 10b5-1 plan flag. An absent flag does not establish whether a transaction was pre-arranged or discretionary.
