According to recent filings covering the 90 days ending January 10, 2026, the three most significant insider holders at Shimmick are Director Mitchell B. Goldsteen (21.10Mn shares), TenPercentOwner Aecom (7.75Mn shares), Chief Executive Officer Ural Yal (173.21K shares).
| Holder | Position | Shares | Report Date |
|---|---|---|---|
| Mitchell B. Goldsteen | 21,099,873 | 02 Sep, 2025 | |
| Aecom | 7,745,000 | 26 Jun, 2024 | |
| Ural Yal | Chief Executive Officer | 173,205 | 04 Dec, 2025 |
| J Brendan Herron | 155,778 | 05 Jun, 2025 | |
| Steven E. Richards | Chief Executive Officer | 142,857 | 15 Nov, 2023 |
| Devin Nordhagen | Nan | 142,857 | 15 Nov, 2023 |
| Guercio Joseph Del | 123,905 | 05 Jun, 2025 | |
| Geoffrey E. Heekin | 108,778 | 05 Jun, 2025 | |
| Carolyn Trabuco | 96,046 | 05 Jun, 2025 | |
| Peter Kravitz | 84,269 | 05 Jun, 2025 | |
| Todd Wilbur Yoder | Chief Financial Officer | 2,000 | 22 Aug, 2025 |
* Please note that the shares above only reflect shares from the fund portfolio and the institutional portfolio. Shares from the personal portfolio are excluded from this Institutional Ownership Page. See these insiders' latest transactions here on Insider Page.
| Transaction Date | Insider Name | Security Class | Transaction Type | Shares Traded | Price | Shares Remaining | Ownership | Code |
|---|---|---|---|---|---|---|---|---|
| 02 Dec, 2025 | Ural Yal | Common Stock, par value $0.01 per share | A | 173,205 | - | 173,205 | D | M |
| 29 Aug, 2025 | Mitchell B. Goldsteen | Common Stock, par value $0.01 per share | D | 14,706 | $2.96 | 21,099,873 | I | S |
| 28 Aug, 2025 | Mitchell B. Goldsteen | Common Stock, par value $0.01 per share | D | 10,500 | $3.18 | 21,114,579 | I | S |
| 27 Aug, 2025 | Mitchell B. Goldsteen | Common Stock, par value $0.01 per share | D | 9,229 | $3.32 | 21,125,079 | I | S |
| 21 Aug, 2025 | Todd Wilbur Yoder | Common Stock | A | 2,000 | $2.80 | 2,000 | D | A |
| 21 Aug, 2025 | Todd Wilbur Yoder | - | - | 2,000 | D | |||
| 15 Aug, 2025 | Mitchell B. Goldsteen | Common Stock, par value $0.01 per share | D | 30,805 | $2.23 | 21,134,308 | I | S |
| 14 Aug, 2025 | Mitchell B. Goldsteen | Common Stock, par value $0.01 per share | D | 6,300 | $2.11 | 21,165,113 | I | S |
| 13 Aug, 2025 | Mitchell B. Goldsteen | Common Stock, par value $0.01 per share | D | 8,000 | $2.10 | 21,171,413 | I | S |
| 12 Aug, 2025 | Mitchell B. Goldsteen | Common Stock, par value $0.01 per share | D | 2,116 | $1.98 | 21,179,413 | I | S |
| 11 Aug, 2025 | Mitchell B. Goldsteen | Common Stock, par value $0.01 per share | D | 15,310 | $1.96 | 21,181,529 | I | S |
| 08 Aug, 2025 | Mitchell B. Goldsteen | Common Stock, par value $0.01 per share | D | 2,500 | $1.82 | 21,196,839 | I | S |
| 07 Aug, 2025 | Mitchell B. Goldsteen | - | - | 21,199,339 | I | |||
| 07 Aug, 2025 | Mitchell B. Goldsteen | Common Stock, par value $0.01 per share | D | 2,000 | $1.72 | 21,199,339 | I | S |
| 06 Aug, 2025 | Mitchell B. Goldsteen | Common Stock, par value $0.01 per share | D | 5,092 | $1.74 | 21,201,339 | I | S |
| 06 Aug, 2025 | Mitchell B. Goldsteen | - | - | 21,201,339 | I | |||
| 05 Aug, 2025 | Mitchell B. Goldsteen | Common Stock, par value $0.01 per share | D | 6,243 | $1.73 | 21,206,431 | I | S |
| 04 Aug, 2025 | Mitchell B. Goldsteen | Common Stock, par value $0.01 per share | D | 7,175 | $1.73 | 21,212,674 | I | S |
| 01 Aug, 2025 | Mitchell B. Goldsteen | - | - | 21,219,849 | I | |||
| 01 Aug, 2025 | Mitchell B. Goldsteen | Common Stock, par value $0.01 per share | D | 2,300 | $1.68 | 21,219,849 | I | S |