As of September 09, 2026, the three largest insider holders of WSR are James C Mastandrea (Chairman Ceo, 1.28Mn shares), Christine J Mastandrea (Evp Corporate Strategy, 1.28Mn shares), Christine J Mastandrea (President And Coo, 462.93K shares).
| # | Insider | Position | Direct | Indirect | Total | Share of Insiders | Last Filed |
|---|---|---|---|---|---|---|---|
| 1 | James C Mastandrea | Chairman Ceo | 1,275,155 | 0 | 1,275,155 | 50.7% | 20 Jan, 2022 |
| 2 | Christine J Mastandrea | President And Coo | 462,929 | 0 | 462,929 | 18.4% | 06 Jan, 2026 |
| 3 | John Scott Hogan | Chief Financial Officer | 242,189 | 0 | 242,189 | 9.6% | 06 Apr, 2026 |
| 4 | Peter Tropoli | General Counsel Secretary | 183,770 | 0 | 183,770 | 7.3% | 06 Apr, 2026 |
| 5 | Soklin Siv | Vp Of Human Resources | 103,416 | 0 | 103,416 | 4.1% | 02 Jul, 2026 |
| 6 | Paul T Lambert | Director | 82,090 | 0 | 82,090 | 3.3% | 20 Dec, 2022 |
| 7 | Jack L Mahaffey | Director | 63,584 | 0 | 63,584 | 2.5% | 15 Dec, 2021 |
| 8 | Nandita Berry | Director | 36,129 | 0 | 36,129 | 1.4% | 21 Dec, 2023 |
| 9 | David F. Taylor | Director | 34,536 | 0 | 34,536 | 1.4% | 21 Dec, 2023 |
| 10 | Donald A Miller | Director | 33,694 | 0 | 33,694 | 1.3% | 29 Dec, 2025 |
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 Jul, 2026 | Julia Bruns Buthman | Director | Disposed D | 31,577 | $19.00 | $599.96K | 0 | Direct |
| 14 Jul, 2026 | Kristian M Gathright | Director | Disposed D | 15,789 | $19.00 | $299.99K | 0 | Direct |
| 14 Jul, 2026 | Soklin Siv | Vp Of Human Resources | Acquired A | 64,688 | $0.00 | $0 | 168,104 | Direct |
| 14 Jul, 2026 | Peter Tropoli | General Counsel Secretary | Acquired A | 151,124 | $0.00 | $0 | 330,589 | Direct |
| 14 Jul, 2026 | Amy Shih-Hua Feng | Director | Disposed D | 69,507 | $19.00 | $1.32Mn | 0 | Direct |
| 14 Jul, 2026 | Donald A Miller | Director | Disposed D | 33,694 | $19.00 | $640.19K | 0 | Direct |
| 14 Jul, 2026 | Jeffrey Alan Jones | Director | Disposed D | 45,728 | $19.00 | $868.83K | 0 | Direct |
| 14 Jul, 2026 | John Scott Hogan | Chief Financial Officer | Acquired A | 159,540 | $0.00 | $0 | 395,045 | Direct |
| 14 Jul, 2026 | Christine J Mastandrea | President And Coo | Acquired A | 246,410 | $0.00 | $0 | 718,873 | Direct |
| 14 Jul, 2026 | David K Holeman | Chief Executive Officer | Acquired A | 345,938 | $0.00 | $0 | 1,164,103 | Direct |
| 14 Jul, 2026 | Peter Tropoli | General Counsel Secretary | Disposed D | 330,589 | $19.00 | $6.28Mn | 0 | Direct |
| 14 Jul, 2026 | Soklin Siv | Vp Of Human Resources | Disposed D | 168,104 | $19.00 | $3.19Mn | 0 | Direct |
| 14 Jul, 2026 | David K Holeman | Chief Executive Officer | Disposed D | 1,164,103 | $19.00 | $22.12Mn | 0 | Direct |
| 14 Jul, 2026 | Christine J Mastandrea | President And Coo | Disposed D | 718,873 | $19.00 | $13.66Mn | 0 | Direct |
| 14 Jul, 2026 | John Scott Hogan | Chief Financial Officer | Disposed D | 395,045 | $19.00 | $7.51Mn | 0 | Direct |
| 30 Jun, 2026 | Soklin Siv | Vp Of Human Resources | Disposed F | 2,324 | $18.96 | $44.06K | 103,416 | Direct |
| 30 Jun, 2026 | David K Holeman | Chief Executive Officer | Disposed F | 13,229 | $18.96 | $250.82K | 818,165 | Direct |
| 30 Jun, 2026 | John Scott Hogan | Chief Financial Officer | Disposed F | 6,684 | $18.96 | $126.73K | 235,505 | Direct |
| 30 Jun, 2026 | Peter Tropoli | General Counsel Secretary | Disposed F | 4,305 | $18.96 | $81.62K | 179,465 | Direct |
| 30 Jun, 2026 | Christine J Mastandrea | President And Coo | Disposed F | 8,991 | $18.96 | $170.47K | 472,463 | Direct |