STIM's three largest insider shareholders as of September 29, 2026 are Jorey Chernett (TenPercentOwner, 10.60Mn shares), Capital Llc Cannell (TenPercentOwner, 2.84Mn shares), Asset Management, Lp Madryn (TenPercentOwner, 2.27Mn shares).
| # | Insider | Position | Direct | Indirect | Total | Share of Insiders | Last Filed |
|---|---|---|---|---|---|---|---|
| 1 | Jorey Chernett | TenPercentOwner | 10,602,988 | 0 | 10,602,988 | 42.7% | 17 Aug, 2026 |
| 2 | Capital Llc Cannell | TenPercentOwner | 0 | 2,841,223 | 2,841,223 | 11.4% | 01 Jun, 2023 |
| 3 | Asset Management, Lp Madryn | TenPercentOwner | 0 | 2,269,073 | 2,269,073 | 9.1% | 17 Jun, 2026 |
| 4 | Keith J Sullivan | President And Ceo | 1,590,924 | 0 | 1,590,924 | 6.4% | 24 Mar, 2026 |
| 5 | Sasha Cucuz | Director | 1,542,798 | 0 | 1,542,798 | 6.2% | 29 May, 2026 |
| 6 | Daniel L. Reuvers | President And Ceo | 1,500,000 | 0 | 1,500,000 | 6.0% | 23 Mar, 2026 |
| 7 | William Andrew Macan | Evp, Clo And Cs | 897,270 | 0 | 897,270 | 3.6% | 24 Mar, 2026 |
| 8 | Steven Pfanstiel | Former Evp, Cfo And Treasurer | 836,643 | 0 | 836,643 | 3.4% | 21 May, 2026 |
| 9 | Robert Cascella | Director | 625,017 | 0 | 625,017 | 2.5% | 29 May, 2026 |
| 10 | Nir Naor | Evp, Cfo Treasurer | 500,000 | 0 | 500,000 | 2.0% | 23 Jul, 2026 |
| 11 | Stephen Furlong | Evp, Cfo And Treasurer | 410,053 | 0 | 410,053 | 1.7% | 14 May, 2025 |
| 12 | Glenn P Muir | Director | 401,816 | 0 | 401,816 | 1.6% | 29 May, 2026 |
| 13 | Sheryl L Conley | Director | 251,716 | 0 | 251,716 | 1.0% | 29 May, 2026 |
| 14 | Megan Rosengarten | Director | 170,890 | 0 | 170,890 | 0.7% | 29 May, 2026 |
| 15 | Wilfred E Jaeger | Director | 138,563 | 0 | 138,563 | 0.6% | 30 May, 2023 |
| 16 | John K Bakewell | Director | 114,352 | 0 | 114,352 | 0.5% | 26 May, 2023 |
| 17 | Bruce Joseph Shook | Director | 68,847 | 0 | 68,847 | 0.3% | 31 May, 2022 |
| 18 | Joseph H Capper | Director | 43,147 | 0 | 43,147 | 0.2% | 30 May, 2023 |
| 19 | Avinash Amin | Director | 30,000 | 0 | 30,000 | 0.1% | 17 Jun, 2026 |
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 |
|---|---|---|---|---|---|---|---|---|
| 14 Aug, 2026 | Jorey Chernett | TenPercentOwner | Acquired P | 14,000 | $3.16 | $44.24K | 10,602,988 | Direct |
| 13 Aug, 2026 | Jorey Chernett | TenPercentOwner | Disposed S | 100 | $3.21 | $321 | 0 | Direct |
| 23 Jul, 2026 | Nir Naor | Evp, Cfo Treasurer | Acquired A | 500,000 | $0.00 | $0 | 500,000 | Direct |
| 14 Jul, 2026 | Jorey Chernett | TenPercentOwner | Acquired P | 35,000 | $1.78 | $62.30K | 10,588,988 | Direct |
| 28 May, 2026 | Asset Management, Lp Madryn | TenPercentOwner | Acquired J | 2,071 | $0.00 | $0 | 1,433,024 | Indirect |
| 15 Jun, 2026 | Avinash Amin | Director | Disposed J | 2,934 | $0.00 | $0 | 69,566 | Direct |
| 28 May, 2026 | Asset Management, Lp Madryn | TenPercentOwner | Acquired J | 24,658 | $0.00 | $0 | 17,069,598 | Indirect |
| 15 Jun, 2026 | Avinash Amin | Director | Disposed J | 34,932 | $0.00 | $0 | 34,634 | Direct |
| 15 Jun, 2026 | Avinash Amin | Director | Disposed J | 4,634 | $0.00 | $0 | 30,000 | Direct |
| 28 May, 2026 | Asset Management, Lp Madryn | TenPercentOwner | Acquired J | 3,271 | $0.00 | $0 | 2,264,439 | Indirect |
| 15 Jun, 2026 | Asset Management, Lp Madryn | TenPercentOwner | Acquired J | 2,934 | $0.00 | $0 | 1,435,958 | Indirect |
| 15 Jun, 2026 | Asset Management, Lp Madryn | TenPercentOwner | Acquired J | 34,932 | $0.00 | $0 | 17,104,530 | Indirect |
| 15 Jun, 2026 | Asset Management, Lp Madryn | TenPercentOwner | Acquired J | 4,634 | $0.00 | $0 | 2,269,073 | Indirect |
| 28 May, 2026 | Avinash Amin | Director | Acquired A | 30,000 | $0.00 | $0 | 72,500 | Direct |
| 28 May, 2026 | Sasha Cucuz | Director | Acquired A | 30,000 | $0.00 | $0 | 1,542,798 | Direct |
| 28 May, 2026 | Megan Rosengarten | Director | Acquired A | 30,000 | $0.00 | $0 | 170,890 | Direct |
| 28 May, 2026 | Sheryl L Conley | Director | Acquired A | 30,000 | $0.00 | $0 | 251,716 | Direct |
| 28 May, 2026 | Glenn P Muir | Director | Acquired A | 30,000 | $0.00 | $0 | 401,816 | Direct |
| 28 May, 2026 | Robert Cascella | Director | Acquired A | 36,250 | $0.00 | $0 | 625,017 | Direct |
| 19 Mar, 2026 | Steven Pfanstiel | Former Evp, Cfo And Treasurer | Disposed S | 8,569 | $1.34 | $11.48K | 836,643 | Direct |