SHIMMICK CORPORATION SHIM
COM · Common Stock · CUSIP 82455M109
- SectorIndustrials
- IndustryHeavy Construction Other Than Bldg Const - Contractors
- HeadquartersIrvine, CA
- FilingsSEC EDGAR
* Summed across managers. Shares that two managers' reports both contain – a subsidiary's holdings that its parent's report includes too, or a sub-adviser's in its client's – are counted once. Holder counts are more reliable. Shares outstanding: 41.3m as of 2026-08-07, from the company's own SEC filing; the percentage can still exceed 100%: lent-out shares are counted by the lender and the buyer, and some reports overlap without saying so. Implied quarter-end price ≈ $4.57.
Trends to Q2 2026
Institutional holders
Managers reporting a position, each quarter
Numbers
| Quarter | Holders |
|---|---|
| Q4 2023 | 16 |
| Q1 2024 | 27 |
| Q2 2024 | 20 |
| Q3 2024 | 21 |
| Q4 2024 | 24 |
| Q1 2025 | 18 |
| Q2 2025 | 17 |
| Q3 2025 | 17 |
| Q4 2025 | 16 |
| Q1 2026 | 23 |
| Q2 2026 | 52 |
Buyers vs sellers
Managers adding to or starting a position, vs cutting or selling out
Numbers
| Quarter | Bought or added | Cut or sold out |
|---|---|---|
| Q3 2024 | 10 | 12 |
| Q4 2024 | 9 | 10 |
| Q1 2025 | 9 | 9 |
| Q2 2025 | 4 | 8 |
| Q3 2025 | 7 | 5 |
| Q4 2025 | 7 | 8 |
| Q1 2026 | 16 | 5 |
| Q2 2026 | 44 | 7 |
Biggest buyers
| CANNELL CAPITAL LLC | New | +957.6k |
| GRATIA CAPITAL, LLC | New | +726.9k |
| MYDA Advisors LLC | New | +575.0k |
| 1492 Capital Management LLC | Added | +454.1k |
| VANGUARD CAPITAL MANAGEMENT LLC | Added | +222.7k |
| BlackRock, Inc. | Added | +218.1k |
| Walleye Capital LLC | New | +126.4k |
| Pacific Ridge Capital Partners, LLC | Added | +102.7k |
| RENAISSANCE TECHNOLOGIES LLC | Added | +89.9k |
| MARSHALL WACE, LLP | New | +77.3k |
Biggest sellers
| SANDERS MORRIS HARRIS LLC | Reduced | -390.1k |
| THOMPSON DAVIS & CO., INC. | Reduced | -21.5k |
| SEI INVESTMENTS CO | Reduced | -16.3k |
| Informed Momentum Co LLC | Reduced | -5.5k |
| GSA CAPITAL PARTNERS LLP | Reduced | -5.1k |
| ROYAL BANK OF CANADA | Reduced | -73 |
| CITADEL ADVISORS LLC | Reduced | -15 |
Major shareholders (over 5%)
Anyone who owns more than 5% of a class of the company's shares has to say so: on Schedule 13D if they may try to influence or control the company, on 13G if they're a passive investor, and update it as the stake changes. Each holder's latest filing, from 19 Dec 2024 on; percentages are of the share class, as the holder worked them out.
| Holder | Stake |
|---|---|
| Goldsteen Mitchell B. 13G · exempt (held before listing) -4.7 pts · filed 2026-05-15 | 57.8% |
| AECOM 13D · may seek influence filed 2026-08-12 | 18.7% |
Insider purchases and sales since 1 Apr 2026
Shares bought or sold by the company's own officers, directors and 10% owners, in the open market or privately, as they reported to the SEC on Form 4 (due within two business days of the trade). Grants, option exercises, shares withheld for tax and gifts aren't included.
Officers and directors buying vs selling
Number of people, by quarter (10% owners not included)
Numbers
| Quarter | Buying | Bought | Selling | Sold | Sold under a plan |
|---|---|---|---|---|---|
| Q4 2024 | 0 | — | 1 | $1.1m | $1.1m |
| Q1 2025 | 0 | — | 1 | $50.3k | $50.3k |
| Q2 2025 | 0 | — | 2 | $300.2k | $278.8k |
| Q3 2025 | 1 | $5.6k | 1 | $562.2k | $562.2k |
| Q4 2025 | 0 | — | 0 | — | — |
| Q1 2026 | 0 | — | 1 | $357.5k | $357.5k |
| Q2 2026 | 0 | — | 0 | — | — |
| Q3 2026 | 0 | — | 0 | — | — |
None reported since 1 Apr 2026.
Holders, Q2 2026
| Manager | Shares | Change |
|---|---|---|
| CANNELL CAPITAL LLC 3.06% of their portfolio | 957.6k $4.4m | New |
| GRATIA CAPITAL, LLC 3.82% of their portfolio | 726.9k $3.3m | New |
| 1492 Capital Management LLC 0.81% of their portfolio | 603.9k $2.8m | Added +454.1k |
| MYDA Advisors LLC 0.64% of their portfolio | 575.0k $2.6m | New |
| Pacific Ridge Capital Partners, LLC 0.45% of their portfolio | 542.4k $2.5m | Added +102.7k |
| SANDERS MORRIS HARRIS LLC 0.98% of their portfolio | 368.3k $1.7m | Reduced -390.1k |
| VANGUARD CAPITAL MANAGEMENT LLC 0.00% of their portfolio | 283.9k $1.3m | Added +222.7k |
| SEI INVESTMENTS CO 0.00% of their portfolio | 230.5k $1.1m | Reduced -16.3k |
| BlackRock, Inc. 0.00% of their portfolio | 229.4k $1.0m | Added +218.1k |
| GEODE CAPITAL MANAGEMENT, LLC 0.00% of their portfolio | 156.1k $713.4k | Added +71.0k |
| Informed Momentum Co LLC 0.05% of their portfolio | 133.0k $607.7k | Reduced -5.5k |
| Walleye Capital LLC 0.00% of their portfolio | 126.4k $577.6k | New |
| RENAISSANCE TECHNOLOGIES LLC 0.00% of their portfolio | 125.6k $573.8k | Added +89.9k |
| THOMPSON DAVIS & CO., INC. 0.28% of their portfolio | 104.0k $475.3k | Reduced -21.5k |
| MARSHALL WACE, LLP 0.00% of their portfolio | 77.3k $353.2k | New |
| Integrated Quantitative Investments LLC 0.04% of their portfolio | 50.7k $231.6k | New |
| Avanza Fonder AB 0.00% of their portfolio | 42.4k $193.8k | Added +15.7k |
| VANGUARD FIDUCIARY TRUST CO 0.00% of their portfolio | 37.7k $172.4k | Added +5.1k |
| NORTHERN TRUST CORP 0.00% of their portfolio | 36.6k $167.4k | New |
| JANE STREET GROUP, LLC 0.00% of their portfolio | 35.7k $163.2k | Added +16.4k |
| VANGUARD PORTFOLIO MANAGEMENT LLC 0.00% of their portfolio | 34.9k $159.4k | New |
| XTX Topco Ltd 0.00% of their portfolio | 34.6k $158.1k | Added +22.9k |
| STATE STREET CORP 0.00% of their portfolio | 33.7k $154.0k | Added +19.0k |
| BANK OF AMERICA CORP /DE/ 0.00% of their portfolio | 29.5k $134.8k | New |
| Centiva Capital, LP 0.00% of their portfolio | 25.8k $118.1k | Added +12.8k |
| NEW YORK STATE COMMON RETIREMENT FUND 0.00% of their portfolio | 24.6k $112.4k | New |
| CITADEL ADVISORS LLC 0.00% of their portfolio | 24.5k $111.8k | Reduced -15 |
| ACADIAN ASSET MANAGEMENT LLC 0.00% of their portfolio | 19.9k $90.0k | New |
| UBS Group AG 0.00% of their portfolio | 15.4k $70.6k | Added +15.1k |
| AXQ CAPITAL, LP 0.01% of their portfolio | 15.1k $68.8k | New |
| MILLENNIUM MANAGEMENT LLC 0.00% of their portfolio | 13.6k $61.9k | New |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC 0.00% of their portfolio | 12.7k $58.0k | New |
| GSA CAPITAL PARTNERS LLP 0.00% of their portfolio | 11.6k $53.0k | Reduced -5.1k |
| Bank of New York Mellon Corp 0.00% of their portfolio | 10.4k $47.4k | New |
| CHOREO, LLC 0.00% of their portfolio | 10.3k $46.9k | Unchanged |
| Ancora Advisors LLC 0.00% of their portfolio | 4.8k $21.7k | New |
| WELLS FARGO & COMPANY/MN 0.00% of their portfolio | 4.7k $21.3k | New |
| RHUMBLINE ADVISERS 0.00% of their portfolio | 4.0k $18.4k | New |
| Morse Asset Management, Inc 0.00% of their portfolio | 3.2k $14.6k | New |
| CITIGROUP INC 0.00% of their portfolio | 2.5k $11.2k | New |
| MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd. 0.00% of their portfolio | 2.4k $10.8k | New |
| JPMORGAN CHASE & CO 0.00% of their portfolio | 2.1k $9.1k | New |
| BARCLAYS PLC 0.00% of their portfolio | 2.0k $9.1k | New |
| MORGAN STANLEY 0.00% of their portfolio | 1.8k $8.3k | New |
| BNP PARIBAS FINANCIAL MARKETS 0.00% of their portfolio | 1.8k $8.3k | New |
| Tower Research Capital LLC (TRC) 0.00% of their portfolio | 1.2k $5.7k | Added +691 |
| Ameritas Investment Partners, Inc. 0.00% of their portfolio | 466 $2.1k | New |
| OSAIC HOLDINGS, INC. 0.00% of their portfolio | 420 $1.9k | Added +220 |
| Russell Investments Group, Ltd. 0.00% of their portfolio | 409 $1.9k | New |
| ROYAL BANK OF CANADA 0.00% of their portfolio | 193 $1.0k | Reduced -73 |
| Sterling Capital Management LLC 0.00% of their portfolio | 24 $110 | New |
| FMR LLC 0.00% of their portfolio | 5 $23 | New |