Hudson Technologies (HDSN) 10% Owner Hartree Partners Buys Shares

What Happened

• Hartree Partners, LP (reported as a 10% owner) made open-market purchases of Hudson Technologies (HDSN) stock. The filing reports two buys: 2,502 shares on 2026-09-21 at about $5.10 each ($12,757) and 11,013 shares on 2026-09-23 at about $5.10 each ($56,166). Combined, Hartree acquired 13,515 shares for approximately $68,923. These transactions are purchases (buys), which investors often view as a more informative signal than routine insider sales.

Key Details

• Transaction dates and amounts:
  • 2026-09-21: Purchase of 2,502 shares at a reported $5.10 (total ~$12,757).
  • 2026-09-23: Purchase of 11,013 shares at a reported $5.10 (total ~$56,166).
• Reported price detail: Footnote states a weighted average price; actual trade prices ranged from $5.0950 to $5.1000. The filer can provide per-trade prices on request (Footnote F2).
• Shares owned after transaction: Not disclosed in the provided filing.
• Footnote on ownership (F1): Hartree disclaims beneficial ownership except to the extent of its pecuniary interest (standard for funds).
• Transaction code: P = Purchase (open market or private purchase).
• Filing timeliness: Form 4 was filed on 2026-09-23 covering trades on 9/21 and 9/23; this appears to be within the standard two-business-day reporting window (not flagged as late).
• Institutional note: As a reported 10% owner (institutional investor), this is not an executive’s personal trade.

Context

• These were straightforward purchases of shares (no option exercises, gifts, or awards). For retail investors, such institutional buys increase the investor’s stake and may suggest confidence or a strategic position, but do not by themselves explain motive.