Bertaux Brian J. 4

What Happened
Brian J. Bertaux, Chief Financial Officer of Hudson Technologies (HDSN), acquired 2,000 shares in an open-market purchase on May 19, 2026. The shares were bought at $4.87 per share for a total transaction value of approximately $9,740. This was a purchase (generally viewed as a more bullish signal than a sale).

Key Details

• Transaction date: 2026-05-19; reported on Form 4 filed 2026-05-21.
• Transaction type/code: Open-market purchase (P).
• Price and size: 2,000 shares at $4.87 each; total ~$9,740.
• Shares owned after transaction: Not disclosed in the provided filing excerpt.
• Footnotes/plan: No 10b5-1 plan, tax withholding, or other special footnotes indicated in the supplied data.
• Timeliness: Filed two days after the trade (May 21 for a May 19 trade), within the typical two-business-day Form 4 reporting window.

Context
Open-market purchases by executives can signal confidence but should be weighed against the trade size. This purchase is modest in dollar terms (~$9.7k), so it represents a small personal buy rather than a large new stake. Retail investors should look at this alongside other insider activity, company fundamentals, and overall trading history.