SLG's three largest insider shareholders as of September 29, 2026 are Harrison Sitomer (President Cio, 109.47K shares), Lauren B. Dillard (Director, 20.45K shares), John S Levy (Director, 19.64K shares).
| # | Insider | Position | Direct | Indirect | Total | Share of Insiders | Last Filed |
|---|---|---|---|---|---|---|---|
| 1 | Harrison Sitomer | President Cio | 109,468 | 0 | 109,468 | 50.9% | 24 Aug, 2026 |
| 2 | Andrew S Levine | Chief Legal Officer Gc | 22,045 | 0 | 22,045 | 10.3% | 23 Dec, 2025 |
| 3 | Lauren B. Dillard | Director | 20,448 | 0 | 20,448 | 9.5% | 06 Jan, 2026 |
| 4 | John S Levy | Director | 19,636 | 0 | 19,636 | 9.1% | 14 Dec, 2021 |
| 5 | Matthew J. Diliberto | Chief Financial Officer | 13,000 | 0 | 13,000 | 6.0% | 28 Mar, 2023 |
| 6 | Marc Holliday | President Ceo | 9,698 | 0 | 9,698 | 4.5% | 29 Dec, 2025 |
| 7 | Betsy S Atkins | Director | 6,886 | 0 | 6,886 | 3.2% | 26 Jan, 2024 |
| 8 | Andrew W Mathias | President | 6,049 | 0 | 6,049 | 2.8% | 06 Nov, 2023 |
| 9 | Edwin T Iii Burton | Director | 5,207 | 0 | 5,207 | 2.4% | 09 Jan, 2024 |
| 10 | Craig M Hatkoff | Director | 2,052 | 0 | 2,052 | 1.0% | 02 Feb, 2026 |
| 11 | John H Jr Alschuler | Director | 552 | 0 | 552 | 0.3% | 09 Dec, 2021 |
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 |
|---|---|---|---|---|---|---|---|---|
| 11 Sep, 2026 | Marc Holliday | Chief Executive Officer | Disposed D | 92,025 | $54.85 | $5.05Mn | 1,432,523 | Direct |
| 20 Aug, 2026 | Harrison Sitomer | President Cio | Disposed S | 16,887 | $58.52 | $988.29K | 132,581 | Direct |
| 21 Aug, 2026 | Harrison Sitomer | President Cio | Disposed S | 22,414 | $57.69 | $1.29Mn | 110,167 | Direct |
| 21 Aug, 2026 | Harrison Sitomer | President Cio | Disposed S | 699 | $58.51 | $40.90K | 109,468 | Direct |
| 24 Jun, 2026 | Matthew J. Diliberto | Chief Financial Officer | Disposed D | 18,735 | $50.65 | $948.93K | 283,686 | Direct |
| 24 Jun, 2026 | Marc Holliday | President Ceo | Disposed D | 92,025 | $50.65 | $4.66Mn | 1,524,548 | Direct |
| 19 May, 2026 | Andrew W Mathias | Director | Disposed D | 100,000 | $43.94 | $4.39Mn | 1,124,369 | Direct |
| 04 May, 2026 | Matthew J. Diliberto | Chief Financial Officer | Disposed D | 19,000 | $42.89 | $814.91K | 302,421 | Direct |
| 04 May, 2026 | Andrew S Levine | Chief Legal Officer Gc | Disposed D | 33,542 | $42.89 | $1.44Mn | 253,838 | Direct |
| 30 Mar, 2026 | Carol N Brown | Director | Disposed S | 5,004 | $36.33 | $181.77K | 0 | Direct |
| 27 Feb, 2026 | Harrison Sitomer | President Cio | Acquired A | 85,492 | $0.00 | $0 | 149,468 | Direct |
| 12 Feb, 2026 | Andrew S Levine | Chief Legal Officer Gc | Acquired A | 32,012 | $0.00 | $0 | 244,704 | Direct |
| 12 Feb, 2026 | Marc Holliday | President Ceo | Acquired A | 110,387 | $0.00 | $0 | 1,365,031 | Direct |
| 12 Feb, 2026 | Andrew W Mathias | Director | Acquired A | 100,617 | $0.00 | $0 | 1,123,752 | Direct |
| 12 Feb, 2026 | Matthew J. Diliberto | Chief Financial Officer | Acquired A | 33,999 | $0.00 | $0 | 259,596 | Direct |
| 12 Feb, 2026 | Marc Holliday | President Ceo | Acquired A | 125,771 | $0.00 | $0 | 1,490,802 | Direct |
| 12 Feb, 2026 | Matthew J. Diliberto | Chief Financial Officer | Acquired A | 7,729 | $0.00 | $0 | 267,325 | Direct |
| 12 Feb, 2026 | Andrew W Mathias | Director | Acquired A | 100,617 | $0.00 | $0 | 1,224,369 | Direct |
| 12 Feb, 2026 | Andrew S Levine | Chief Legal Officer Gc | Acquired A | 9,316 | $0.00 | $0 | 254,020 | Direct |
| 12 Feb, 2026 | Andrew S Levine | Chief Legal Officer Gc | Acquired A | 9,316 | $0.00 | $0 | 263,336 | Direct |