Shimmick SHIM Insider Ownership

Updated Oct 10, 2026

In the last 12 months, insiders at Shimmick made open-market sales of $357,500 (125K shares) and bought no shares on the open market.

• The largest open-market sales of SHIM in the past 12 months were by Mitchell B. Goldsteen (Director and 10% owner), totaling $357,500 (125K shares), most recently on March 17, 2026.
• In transactions other than open-market trades, Shimmick insiders acquired 432.72K shares through option exercises and conversions and gave up 47.19K shares to cover taxes or exercise prices over the past 12 months.
• Business Quant data puts insider holdings in SHIM at 22.13Mn shares across insiders' latest Form 4 filings, unchanged from 22.13Mn shares at the end of Q2 2026.
• Of the 22.13Mn shares held by Shimmick insiders, 1.16Mn shares (5.23%) are held directly and 20.97Mn shares (94.77%) indirectly, through trusts, partnerships, family members and other entities.
• Holdings in Shimmick stock are reported by 9 insiders, the officers, directors and 10% owners who have filed a Form 4 in the past two years.
• SHIM's three largest insider shareholders, per their latest Form 4 filings, are Mitchell B. Goldsteen (Director and 10% owner, 20.97Mn shares), Joseph Del Guercio (Director, 224.58K shares) and Geoffrey E. Heekin (Director, 209.45K shares).
• Of the shares held by SHIM insiders, 94.77% belong to Mitchell B. Goldsteen.
• Institutional holders reported 16.06% of Shimmick's outstanding shares for Q2 2026; insiders' latest Form 4 filings put their stake at about 53.54%, and other investors, including the public, hold the remaining 30.40%.
• Over the past 12 months, 7 insiders reported transactions in Shimmick stock in 10 Form 4 filings.
• These insider figures for Shimmick are based on Form 4 filings through September 2, 2026.