InsiderCIK 1597857

Hartree Partners, LP: Insider Trades

Every open-market purchase and sale Hartree Partners, LP reported on Form 4 since Aug 13, 2026, with how the stock moved after each purchase.

HDSN HUDSON TECHNOLOGIES INC /NY · 10% owner

8Purchases

$1.34MBought

0Sales

$0Sold

Track record of purchases

Not enough time has passed, or price data is missing, to measure these purchases yet.

Change in the stock price from the price paid to the closest weekly price about 1, 3 and 6 months later, from SEC fails-to-deliver data. Dividends are not included, and purchases with a possible stock split in between are skipped. Past results do not predict future ones. How we measure this

All reported trades

Trades by Hartree Partners, LP
Filed	Traded	Ticker	Role	Type	Shares	Price ($)	Value	Holding	Filing
Sep 28	Sep 24	HDSN	10% owner	▲ BUY	118,549	5.10	$604K	+2.3%	Form 4 ↗
Sep 23	Sep 23	HDSN	10% owner	▲ BUY	11,013	5.10	$56K	+0.2%	Form 4 ↗
Sep 23	Sep 21	HDSN	10% owner	▲ BUY	2,502	5.10	$13K	+0.0%	Form 4 ↗
Sep 18	Sep 16	HDSN	10% owner	▲ BUY	11,136	5.10	$57K	+0.2%	Form 4 ↗
Sep 4	Sep 2	HDSN	10% owner	▲ BUY	5,317	5.10	$27K	+0.1%	Form 4 ↗
Aug 26	Aug 25	HDSN	10% owner	▲ BUY	91,166	5.50	$501K	+1.8%	Form 4 ↗
Aug 26	Aug 24	HDSN	10% owner	▲ BUY	9,446	5.50	$52K	+0.2%	Form 4 ↗
Aug 14	Aug 12	HDSN	10% owner	▲ BUY	5,198	5.50	$29K	+0.1%	Form 4 ↗

Source: SEC Form 4 filings, retrieved Oct 28, 2026. How we read filings

Names come from the filings. Different people can share a name, so we group trades by the SEC's reporting-owner number (CIK) instead.