On Oct 16, 2025, 28 insiders at 15 companies filed 37 purchases reported on Form 4, worth $56.6M in all, with a median purchase of $16.0K. The largest was Sprott Eric, 10% owner of Hycroft Mining Holding Corp (HYMC), who reported buying 7,690,000 shares worth $50.0M. Officers accounted for 14 purchases, directors who are not officers for 17, and 10% owners with no board or officer role for 5. Chief executives and chief financial officers filed 4 purchases: Sack Peter, Co-Chief Executive Officer, Director of Chicago Atlantic Real Estate Finance, Inc. (REFI); Virtue Robert A, CEO, Director of Virco Mfg Corporation (VIRC); Chung Jane, Chief Executive Officer, Director of Sutro Biopharma, Inc. (STRO) among others. 5 companies showed cluster buying, two or more insiders buying within 7 days, among them REFI (5 insiders), STRO (5 insiders), EDUC (4 insiders), GABC (4 insiders). For 9 insiders of 28, this was the first purchase of that company's stock on our record. That is more than the 19 purchases filed on Oct 15, 2025. A Form 4 is due within two business days of the trade, so most of these purchases were made earlier in the week. Code P also covers shares bought privately from the company, so one large figure can be a negotiated placement rather than buying on the exchange.
| Company | Value | Insider | Role | Shares | Filed |
|---|---|---|---|---|---|
| HYMC Hycroft Mining Holding Corp | $50.0M | Sprott Eric | 10% owner | 7,690,000 | 2025-10-16 |
| VANI Vivani Medical, Inc. | $1.6M | Williams Gregg | Director, 10% owner | 1,473,214 | 2025-10-16 |
| ASA ASA Gold & Precious Metals Ltd | $1.6M | Saba Capital Management, L.P. | 10% owner | 31,833 | 2025-10-16 |
| CIK 2041175 | $1.5M | Neuberger Berman Group LLC | 10% owner | 147,493 | 2025-10-16 |
| ASA ASA Gold & Precious Metals Ltd | $681.0K | Saba Capital Management, L.P. | 10% owner | 13,170 | 2025-10-16 |
| VANI Vivani Medical, Inc. | $333.3K | Williams Gregg | Director, 10% owner | 264,550 | 2025-10-16 |
| REFI Chicago Atlantic Real Estate Finance, Inc. | $126.2K | Papastavrou Jason D | Director | 10,000 | 2025-10-16 |
| REFI Chicago Atlantic Real Estate Finance, Inc. | $102.0K | Mazarakis John | Executive Chairman, Director | 8,000 | 2025-10-16 |
| REFI Chicago Atlantic Real Estate Finance, Inc. | $101.3K | Sack Peter | Co-Chief Executive Officer, Director | 8,150 | 2025-10-16 |
| REFI Chicago Atlantic Real Estate Finance, Inc. | $86.3K | Konigsberg Brandon | Director | 7,000 | 2025-10-16 |
| REFI Chicago Atlantic Real Estate Finance, Inc. | $63.6K | Papastavrou Jason D | Director | 5,000 | 2025-10-16 |
| RMI RiverNorth Opportunistic Municipal Income Fund, Inc. | $61.0K | RiverNorth Financial Holdings, LLC | Insider | 4,138 | 2025-10-16 |
| FAST Fastenal Co | $42.5K | HSU Hsenghung Sam | Director | 1,000 | 2025-10-16 |
| STRO Sutro Biopharma, Inc. | $40.0K | Matsui Connie | Director | 50,000 | 2025-10-16 |
| REFI Chicago Atlantic Real Estate Finance, Inc. | $38.0K | Papastavrou Jason D | Director | 3,000 | 2025-10-16 |
| VIRC Virco Mfg Corporation | $34.8K | Virtue Robert A | CEO, Director | 5,000 | 2025-10-16 |
| REFI Chicago Atlantic Real Estate Finance, Inc. | $31.8K | Kite David | Chief Operating Officer | 2,500 | 2025-10-16 |
| REFI Chicago Atlantic Real Estate Finance, Inc. | $30.8K | Kite David | Chief Operating Officer | 2,500 | 2025-10-16 |
| STRO Sutro Biopharma, Inc. | $16.0K | Chow Gregory K. | CFO | 19,750 | 2025-10-16 |
| STRO Sutro Biopharma, Inc. | $13.6K | Gerber Hans-Peter | CHIEF SCIENTIFIC OFFICER | 17,000 | 2025-10-16 |
| STRO Sutro Biopharma, Inc. | $10.0K | Pauling David | Chief Admin. Ofcr. & GC | 12,504 | 2025-10-16 |
| STRO Sutro Biopharma, Inc. | $10.0K | Chung Jane | Chief Executive Officer, Director | 12,500 | 2025-10-16 |
| GABC German American Bancorp, Inc. | $6.1K | Bawel Zachary W | Director | 155 | 2025-10-16 |
| AROW Arrow Financial Corp | $5.6K | Duffy Kristine D | Director | 210 | 2025-10-16 |
| EDUC Educational Development Corp | $5.0K | Hooser Steven G | Director | 4,000 | 2025-10-16 |
| EDUC Educational Development Corp | $5.0K | Stoots Bradely Von | Director | 4,000 | 2025-10-16 |
| EDUC Educational Development Corp | $5.0K | Neal Kara Gae | Director | 4,000 | 2025-10-16 |
| GABC German American Bancorp, Inc. | $1.2K | Sheidler Jack | Director | 31 | 2025-10-16 |
| GABC German American Bancorp, Inc. | $1.1K | Ellspermann Susan J | Director | 28 | 2025-10-16 |
| GABC German American Bancorp, Inc. | $1.1K | Ryan Christina M | Director | 28 | 2025-10-16 |
| UMH Umh Properties, Inc. | $1.0K | Carus Jeffrey A | Director | 72 | 2025-10-16 |
| RCG RENN Fund, Inc. | $943 | Stahl Murray | President/Co-Portfolio Manager, 10% owner | 360 | 2025-10-16 |
| TPL Texas Pacific Land Corp | $924 | Horizon Kinetics Asset Management Llc | 10% owner | 1 | 2025-10-16 |
| RCG RENN Fund, Inc. | $776 | Stahl Murray | President/Co-Portfolio Manager, 10% owner | 296 | 2025-10-16 |
| RCG RENN Fund, Inc. | $472 | Stahl Murray | President/Co-Portfolio Manager, 10% owner | 180 | 2025-10-16 |
| RCG RENN Fund, Inc. | $215 | Stahl Murray | President/Co-Portfolio Manager, 10% owner | 82 | 2025-10-16 |
| RCG RENN Fund, Inc. | $47 | Stahl Murray | President/Co-Portfolio Manager, 10% owner | 18 | 2025-10-16 |
Source: U.S. Securities and Exchange Commission (EDGAR) and other official
government data · Updated 2026-10-12 ·
For informational purposes only, not investment advice.
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