As of September 29, 2026, the three largest insider holders of SLS are Angelos M. Stergiou (President And Ceo, 1.76Mn shares), Dragan Cicic (Svp, Chief Development Officer, 557.80K shares), John Thomas Burns (Cfo, 554.33K shares).
| # | Insider | Position | Direct | Indirect | Total | Share of Insiders | Last Filed |
|---|---|---|---|---|---|---|---|
| 1 | Angelos M. Stergiou | President And Ceo | 1,976,604 | 0 | 1,976,604 | 50.9% | 18 Jun, 2026 |
| 2 | John Thomas Burns | Cfo | 609,254 | 0 | 609,254 | 15.7% | 09 Jan, 2026 |
| 3 | Dragan Cicic | Svp, Chief Development Officer | 557,805 | 0 | 557,805 | 14.4% | 09 Jan, 2026 |
| 4 | Barbara A Wood | Evp, Gen. Counsel, Corp. Sec. | 199,450 | 0 | 199,450 | 5.1% | 24 Jan, 2024 |
| 5 | Katherine Bach Kalin | Director | 154,400 | 0 | 154,400 | 4.0% | 09 Jan, 2026 |
| 6 | Jane Wasman | Director | 92,900 | 0 | 92,900 | 2.4% | 09 Jan, 2026 |
| 7 | Nostrand Robert L Van | Director | 82,900 | 0 | 82,900 | 2.1% | 09 Jan, 2026 |
| 8 | David A Scheinberg | Director | 73,082 | 0 | 73,082 | 1.9% | 09 Jan, 2026 |
| 9 | John Varian | Director | 72,900 | 0 | 72,900 | 1.9% | 09 Jan, 2026 |
| 10 | Robert Francomano | Chief Commercial Officer | 61,836 | 0 | 61,836 | 1.6% | 24 Jan, 2024 |
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 |
|---|---|---|---|---|---|---|---|---|
| 16 Jun, 2026 | Angelos M. Stergiou | President And Ceo | Acquired A | 1,065,000 | $0.00 | $0 | 1,759,183 | Direct |
| 07 Jan, 2026 | Katherine Bach Kalin | Director | Acquired A | 50,000 | $0.00 | $0 | 154,400 | Direct |
| 07 Jan, 2026 | John Varian | Director | Acquired A | 50,000 | $0.00 | $0 | 72,900 | Direct |
| 07 Jan, 2026 | Dragan Cicic | Svp, Chief Development Officer | Acquired A | 300,000 | $0.00 | $0 | 557,805 | Direct |
| 07 Jan, 2026 | Jane Wasman | Director | Acquired A | 50,000 | $0.00 | $0 | 92,900 | Direct |
| 07 Jan, 2026 | John Thomas Burns | Cfo | Acquired A | 300,000 | $0.00 | $0 | 554,327 | Direct |
| 07 Jan, 2026 | David A Scheinberg | Director | Acquired A | 50,000 | $0.00 | $0 | 73,082 | Direct |
| 07 Jan, 2026 | Nostrand Robert L Van | Director | Acquired A | 50,000 | $0.00 | $0 | 82,900 | Direct |
| 03 Dec, 2025 | Angelos M. Stergiou | President And Ceo | Disposed J | 187,066 | $1.50 | $280.60K | 686,966 | Direct |
| 03 Dec, 2025 | John Thomas Burns | Cfo | Disposed J | 58,592 | $1.50 | $87.89K | 254,327 | Direct |
| 03 Dec, 2025 | Dragan Cicic | Svp, Chief Development Officer | Disposed J | 63,800 | $1.50 | $95.70K | 257,805 | Direct |
| 19 Nov, 2025 | Katherine Bach Kalin | Director | Acquired P | 63,400 | $1.59 | $100.81K | 104,400 | Direct |
| 12 Jun, 2025 | Nostrand Robert L Van | Director | Acquired P | 10,000 | $1.48 | $14.80K | 20,400 | Direct |
| 30 May, 2025 | Jane Wasman | Director | Acquired P | 20,000 | $1.69 | $33.80K | 30,400 | Direct |
| 22 May, 2025 | Katherine Bach Kalin | Director | Acquired P | 20,000 | $1.80 | $36.00K | 41,000 | Direct |
| 10 Jan, 2025 | Angelos M. Stergiou | President And Ceo | Acquired A | 257,000 | $0.00 | $0 | 615,132 | Direct |
| 10 Jan, 2025 | Nostrand Robert L Van | Director | Acquired A | 12,500 | $0.00 | $0 | 22,900 | Direct |
| 10 Jan, 2025 | David A Scheinberg | Director | Acquired A | 12,500 | $0.00 | $0 | 23,082 | Direct |
| 10 Jan, 2025 | Jane Wasman | Director | Acquired A | 12,500 | $0.00 | $0 | 22,900 | Direct |
| 10 Jan, 2025 | John Varian | Director | Acquired A | 12,500 | $0.00 | $0 | 22,900 | Direct |