Hartree Partners, LP: insider buys
Every open-market stock purchase reported by Hartree Partners, LP to the SEC on Form 4.
Total bought$6.55M
Purchases10
Companies1
Last purchase filedSep 28, 2026
Return on these buys-25%
Hartree Partners, LP has made 10 open-market purchases worth $6.55M in 1 company since Jul 2, 2026, according to SEC Form 4 filings. The most recent was filed on Sep 28, 2026: 118,549 shares of HDSN at $5.10 (10% Owner), worth $604.60K. The largest was $4.48M of HDSN on Jun 30, 2026. Taken together, these purchases are down 25% at the latest closing prices (split-adjusted, weighted by amount).
Companies Hartree Partners, LP bought
| Ticker | Company | Role | Buys | Total | Since buy | Last filed |
|---|---|---|---|---|---|---|
| HDSN | Hudson Technologies Inc | 10% Owner | 10 | $6.55M | -25% | Sep 28 |
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| Filed | Stock | Insider | Value | Shares | Price | Since buy | Stake | Trade | |
|---|---|---|---|---|---|---|---|---|---|
| Sep 28 | HDSNHudson Technologies Inc | Hartree Partners, LP10% Owner | $604.60K | 118,549 | $5.10 | -15% | +2% | Sep 24 | SEC |
| Sep 23 | HDSNHudson Technologies Inc | Hartree Partners, LP10% Owner | $68.93K | 13,515 | $5.10 | -15% | +0% | Sep 21 | SEC |
| Sep 18 | HDSNHudson Technologies Inc | Hartree Partners, LP10% Owner | $56.79K | 11,136 | $5.10 | -15% | +0% | Sep 16 | SEC |
| Sep 4 | HDSNHudson Technologies Inc | Hartree Partners, LP10% Owner | $27.12K | 5,317 | $5.10 | -15% | +0% | Sep 2 | SEC |
| Aug 26 | HDSNHudson Technologies Inc | Hartree Partners, LP10% Owner | $553.37K | 100,612 | $5.50 | -22% | +2% | Aug 24 | SEC |
| Aug 14 | HDSNHudson Technologies Inc | Hartree Partners, LP10% Owner | $28.59K | 5,198 | $5.50 | -22% | +0% | Aug 12 | SEC |
| Jul 31 | HDSNHudson Technologies Inc | Hartree Partners, LP10% Owner | $312.10K | 52,104 | $5.99 | -28% | +1% | Jul 29 | SEC |
| Jul 22 | HDSNHudson Technologies Inc | Hartree Partners, LP10% Owner | $392.64K | 65,550 | $5.99 | -28% | +1% | Jul 20 | SEC |
| Jul 8 | HDSNHudson Technologies Inc | Hartree Partners, LP10% Owner | $31.35K | 5,234 | $5.99 | -28% | +0% | Jul 6 | SEC |
| Jul 2 | HDSNHudson Technologies Inc | Hartree Partners, LP10% Owner | $4.48M | 764,202 | $5.86 | -26% | +21% | Jun 30 | SEC |