As of September 29, 2026, the three largest insider holders of STHO are Inc. Cowen (TenPercentOwner, 1.33Mn shares), Jay Sugarman (President, 457.75K shares), Garett Rosenblum (Chief Accounting Officer, 1.05K shares).
| # | Insider | Position | Direct | Indirect | Total | Share of Insiders | Last Filed |
|---|---|---|---|---|---|---|---|
| 1 | Inc. Cowen | TenPercentOwner | 0 | 1,328,053 | 1,328,053 | 74.3% | 15 Mar, 2024 |
| 2 | Jay Sugarman | President | 364,291 | 93,455 | 457,746 | 25.6% | 15 Apr, 2023 |
| 3 | Garett Rosenblum | Chief Accounting Officer | 1,054 | 0 | 1,054 | 0.1% | 19 May, 2023 |
Each row is that insider’s most recently reported position, from Form 4 filings over the last 60 months — which is why this total does not tie to the quarterly series above, where a quarter counts only the insiders who filed in it. Shares held through a fund or institutional portfolio are counted on the institutional ownership page instead.
| Date | Insider | Position | Transaction | Shares | Price | Value | Shares Held After | Ownership |
|---|---|---|---|---|---|---|---|---|
| 06 Mar, 2024 | Inc. Cowen | TenPercentOwner | Acquired P | 9,307 | $12.01 | $111.81K | 987,299 | Indirect |
| 08 Mar, 2024 | Inc. Cowen | TenPercentOwner | Acquired P | 11,472 | $12.20 | $139.97K | 1,000,920 | Indirect |
| 08 Mar, 2024 | Inc. Cowen | TenPercentOwner | Disposed S | 7,013 | $12.21 | $85.63K | 993,907 | Indirect |
| 06 Mar, 2024 | Inc. Cowen | TenPercentOwner | Disposed S | 1,012 | $11.95 | $12.10K | 986,287 | Indirect |
| 08 Mar, 2024 | Inc. Cowen | TenPercentOwner | Acquired P | 4,431 | $12.26 | $54.32K | 347,203 | Indirect |
| 07 Mar, 2024 | Inc. Cowen | TenPercentOwner | Acquired P | 1,746 | $11.85 | $20.69K | 355,730 | Indirect |
| 07 Mar, 2024 | Inc. Cowen | TenPercentOwner | Disposed S | 14,000 | $11.81 | $165.28K | 341,730 | Indirect |
| 11 Mar, 2024 | Inc. Cowen | TenPercentOwner | Acquired P | 4,595 | $12.03 | $55.29K | 998,502 | Indirect |
| 11 Mar, 2024 | Inc. Cowen | TenPercentOwner | Disposed S | 1,500 | $11.95 | $17.92K | 997,002 | Indirect |
| 11 Mar, 2024 | Inc. Cowen | TenPercentOwner | Acquired P | 448 | $11.91 | $5.34K | 347,651 | Indirect |
| 12 Mar, 2024 | Inc. Cowen | TenPercentOwner | Acquired P | 1,100 | $11.75 | $12.92K | 998,102 | Indirect |
| 12 Mar, 2024 | Inc. Cowen | TenPercentOwner | Disposed S | 17,700 | $11.85 | $209.79K | 980,402 | Indirect |
| 23 May, 2023 | Brett Asnas | Chief Financial Officer | Disposed S | 8,380 | $16.23 | $136.01K | 0 | Direct |
| 19 May, 2023 | Garett Rosenblum | Chief Accounting Officer | Disposed S | 1,343 | $16.20 | $21.76K | 1,054 | Direct |
| 16 May, 2023 | Marcos Alvarado | President | Disposed S | 16,783 | $16.46 | $276.25K | 0 | Direct |
| 17 May, 2023 | Garett Rosenblum | Chief Accounting Officer | Disposed S | 4,580 | $15.98 | $73.19K | 2,397 | Direct |
| 31 Mar, 2023 | Brett Asnas | Chief Financial Officer | Acquired J | 8,380 | $0.00 | $0 | 8,380 | Direct |
| 31 Mar, 2023 | Jay Sugarman | President | Acquired J | 364,291 | $0.00 | $0 | 364,291 | Direct |
| 31 Mar, 2023 | Marcos Alvarado | Vice President | Acquired J | 16,783 | $0.00 | $0 | 16,783 | Direct |
| 31 Mar, 2023 | Garett Rosenblum | Chief Accounting Officer | Acquired J | 6,977 | $0.00 | $0 | 6,977 | Direct |