Across the past 12 months, open-market trades by Stagwell insiders totaled $117,600 in purchases (20K shares) and $13.6 million in sales (2.23Mn shares).
| # | Insider | Position | Direct | Indirect | Total | Share of Insiders | Last Filed |
|---|---|---|---|---|---|---|---|
| 1 | Mark Jeffery Penn | Chief Executive Officer | 23,034,990 | 0 | 23,034,990 | 55.3% | 11 Aug, 2026 |
| 2 | Sachs Group Inc Goldman | TenPercentOwner | 0 | 12,981,022 | 12,981,022 | 31.2% | 17 Jun, 2024 |
| 3 | Jay Leveton | President | 2,009,454 | 0 | 2,009,454 | 4.8% | 03 Apr, 2026 |
| 4 | Ryan Greene | Chief Financial Officer | 1,391,279 | 0 | 1,391,279 | 3.3% | 03 Apr, 2026 |
| 5 | Frank P Lanuto | Evp, Finance | 491,977 | 0 | 491,977 | 1.2% | 04 Aug, 2026 |
| 6 | Charlene Barshefsky | Director | 238,286 | 0 | 238,286 | 0.6% | 12 Jun, 2026 |
| 7 | Irwin D Simon | Director | 228,891 | 0 | 228,891 | 0.5% | 12 Jun, 2026 |
| 8 | Brandt A. Vaughan | Director | 222,653 | 0 | 222,653 | 0.5% | 02 Oct, 2026 |
| 9 | Desiree G Rogers | Director | 214,984 | 0 | 214,984 | 0.5% | 12 Jun, 2026 |
| 10 | Wade Oosterman | Director | 203,936 | 0 | 203,936 | 0.5% | 12 Jun, 2026 |
| 11 | Eli Samaha | Director | 173,221 | 0 | 173,221 | 0.4% | 02 Oct, 2026 |
| 12 | Vincenzo Dimaggio | Svp, Chief Accounting Officer | 165,945 | 0 | 165,945 | 0.4% | 02 Apr, 2025 |
| 13 | Rodney E Slater | Director | 140,680 | 0 | 140,680 | 0.3% | 12 Jun, 2026 |
| 14 | Peter Mcelligott | General Counsel | 122,185 | 0 | 122,185 | 0.3% | 03 Apr, 2026 |
| 15 | Beth J Kaplan | Director | 15,459 | 0 | 15,459 | 0.0% | 13 Aug, 2026 |
| 16 | Bradley J. Gross | Director | 0 | 8,789 | 8,789 | 0.0% | 05 May, 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 |
|---|---|---|---|---|---|---|---|---|
| 01 Oct, 2026 | Eli Samaha | Director | Acquired A | 2,457 | $8.14 | $20.00K | 173,221 | Direct |
| 01 Oct, 2026 | Brandt A. Vaughan | Director | Acquired A | 2,149 | $8.14 | $17.49K | 222,653 | Direct |
| 11 Aug, 2026 | Beth J Kaplan | Director | Acquired A | 15,459 | $0.00 | $0 | 15,459 | Direct |
| 09 Aug, 2026 | Mark Jeffery Penn | Chief Executive Officer | Acquired M | 500,000 | $8.27 | $4.14Mn | 23,534,990 | Direct |
| 09 Aug, 2026 | Mark Jeffery Penn | Chief Executive Officer | Disposed D | 500,000 | $9.17 | $4.59Mn | 23,034,990 | Direct |
| 09 Aug, 2026 | Mark Jeffery Penn | Chief Executive Officer | Acquired M | 75,000 | $6.79 | $509.25K | 23,109,990 | Direct |
| 09 Aug, 2026 | Mark Jeffery Penn | Chief Executive Officer | Disposed D | 75,000 | $9.17 | $687.75K | 23,034,990 | Direct |
| 09 Aug, 2026 | Mark Jeffery Penn | Chief Executive Officer | Disposed M | 500,000 | $0.00 | $0 | 1,000,000 | Direct |
| 09 Aug, 2026 | Mark Jeffery Penn | Chief Executive Officer | Disposed M | 75,000 | $0.00 | $0 | 150,000 | Direct |
| 31 Jul, 2026 | Frank P Lanuto | Officer | Disposed S | 62,000 | $8.46 | $524.52K | 491,977 | Direct |
| 01 Aug, 2026 | Mark Jeffery Penn | Chief Executive Officer | Acquired A | 2,000,000 | $0.00 | $0 | 2,000,000 | Direct |
| 01 Jul, 2026 | Brandt A. Vaughan | Director | Acquired A | 2,355 | $7.43 | $17.50K | 220,504 | Direct |
| 01 Jul, 2026 | Eli Samaha | Director | Acquired A | 2,691 | $7.43 | $19.99K | 170,764 | Direct |
| 11 Jun, 2026 | Eli Samaha | Director | Acquired A | 22,970 | $0.00 | $0 | 168,073 | Direct |
| 11 Jun, 2026 | Charlene Barshefsky | Director | Acquired A | 22,970 | $0.00 | $0 | 238,286 | Direct |
| 11 Jun, 2026 | Irwin D Simon | Director | Acquired A | 22,970 | $0.00 | $0 | 228,891 | Direct |
| 11 Jun, 2026 | Rodney E Slater | Director | Acquired A | 22,970 | $0.00 | $0 | 140,680 | Direct |
| 11 Jun, 2026 | Desiree G Rogers | Director | Acquired A | 22,970 | $0.00 | $0 | 214,984 | Direct |
| 11 Jun, 2026 | Wade Oosterman | Director | Acquired A | 22,970 | $0.00 | $0 | 203,936 | Direct |
| 11 Jun, 2026 | Brandt A. Vaughan | Director | Acquired A | 22,970 | $0.00 | $0 | 218,149 | Direct |