Goldsteen Mitchell B. 4

What Happened
Mitchell B. Goldsteen, a 10% owner of Shimmick Corp (SHIM), sold 125,000 shares on 2026-03-17 in an open-market/private sale for a reported weighted-average price of $2.86, totaling approximately $357,500. The sale was executed pursuant to a pre-established Rule 10b5-1 sales plan adopted December 5, 2025.

Key Details

• Transaction date: 2026-03-17; Form 4 filed: 2026-03-20 (filed late under usual two-business-day rule).
• Shares sold: 125,000; reported weighted-average price: $2.86; gross proceeds ≈ $357,500.
• Footnote F1: Sale effected under a Rule 10b5-1 plan (pre-arranged trades).
• Footnote F2: $2.86 is a weighted average; underlying lots were acquired at prices ranging from $2.50 to $3.42.
• Footnote F3: Goldsteen reports ownership indirectly through GOHO, LLC (he is sole managing member) and disclaims direct beneficial ownership except for any pecuniary interest.
• Shares owned after transaction: not specified on this Form 4; indirect ownership disclosed via GOHO, LLC.

Context

• 10b5-1 plans are pre-set trading programs that allow insiders to sell shares at scheduled times and are generally viewed as routine—while informative on volume, they do not necessarily indicate a change in the insider’s view of the company.
• As a 10% owner (not an officer title reported here), Goldsteen’s trades reflect large-holder activity; retail investors should treat sales under a 10b5-1 plan as pre-planned rather than a real-time signal of sentiment.