MTN's three largest insider shareholders as of September 29, 2026 are Robert A Katz (Ceo Chairperson Of The Board, 286.77K shares), John F Sorte (Director, 46.39K shares), Kirsten A. Lynch (Ceo Director, 35.99K shares).
| # | Insider | Position | Direct | Indirect | Total | Share of Insiders | Last Filed |
|---|---|---|---|---|---|---|---|
| 1 | Robert A Katz | Ceo Chairperson Of The Board | 286,771 | 0 | 286,771 | 54.0% | 05 Jun, 2026 |
| 2 | John F Sorte | Director | 46,392 | 0 | 46,392 | 8.7% | 30 Sep, 2025 |
| 3 | Kirsten A. Lynch | Ceo Director | 35,986 | 0 | 35,986 | 6.8% | 01 Oct, 2024 |
| 4 | John Redmond | Director | 23,854 | 0 | 23,854 | 4.5% | 30 Sep, 2025 |
| 5 | D Bruce Sewell | Director | 22,155 | 0 | 22,155 | 4.2% | 30 Sep, 2025 |
| 6 | Hilary Schneider | Director | 17,111 | 0 | 17,111 | 3.2% | 30 Sep, 2025 |
| 7 | Michael Z Barkin | Evp Chief Financial Officer | 14,303 | 0 | 14,303 | 2.7% | 14 Dec, 2022 |
| 8 | William Rock | President, Mountain Division | 9,447 | 0 | 9,447 | 1.8% | 01 Oct, 2025 |
| 9 | Susan L Decker | Director | 9,389 | 0 | 9,389 | 1.8% | 30 Sep, 2025 |
| 10 | Lynanne Kunkel | Chief Hr Trnsfrm Ofc | 9,271 | 0 | 9,271 | 1.7% | 01 Oct, 2025 |
| 11 | Peter A Vaughn | Director | 8,784 | 0 | 8,784 | 1.7% | 08 Oct, 2025 |
| 12 | James C. O'Donnell | President, Mountain Division | 8,483 | 0 | 8,483 | 1.6% | 27 Sep, 2022 |
| 13 | Michele Romanow | Director | 8,290 | 0 | 8,290 | 1.6% | 30 Sep, 2025 |
| 14 | David T Shapiro | Evp, General Counsel Sec. | 6,704 | 0 | 6,704 | 1.3% | 03 Oct, 2023 |
| 15 | Nadia Nicole Rawlinson | Director | 5,642 | 0 | 5,642 | 1.1% | 30 Sep, 2025 |
| 16 | Angela A Korch | Evp Chief Financial Officer | 5,539 | 0 | 5,539 | 1.0% | 16 Mar, 2026 |
| 17 | Gregory Jon Sullivan | Evp, Retail Hospitality | 3,485 | 0 | 3,485 | 0.7% | 01 Oct, 2025 |
| 18 | Ryan Bennett | Svp Chief Marketing Officer | 2,162 | 0 | 2,162 | 0.4% | 03 Oct, 2023 |
| 19 | Iris Knobloch | Director | 1,907 | 0 | 1,907 | 0.4% | 30 Sep, 2025 |
| 20 | Reginald Chambers | Director | 1,845 | 0 | 1,845 | 0.3% | 30 Sep, 2025 |
| 21 | Julie A. Dececco | Gc Chief Public Affairs Ofc | 1,776 | 0 | 1,776 | 0.3% | 04 May, 2026 |
| 22 | Nathan Mark Gronberg | Vp, Controller Cao | 1,739 | 0 | 1,739 | 0.3% | 01 Oct, 2025 |
| 23 | Courtney K. Goldstein | Evp Chief Marketing Officer | 307 | 0 | 307 | 0.1% | 05 May, 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 |
|---|---|---|---|---|---|---|---|---|
| 03 Aug, 2026 | William Hornbuckle | Director | Acquired A | 249 | $0.00 | $0 | 249 | Direct |
| 04 Jun, 2026 | Robert A Katz | Ceo Chairperson Of The Board | Acquired M | 2,048 | $0.00 | $0 | 287,360 | Direct |
| 04 Jun, 2026 | Robert A Katz | Ceo Chairperson Of The Board | Disposed F | 589 | $134.40 | $79.16K | 286,771 | Direct |
| 04 Jun, 2026 | Robert A Katz | Ceo Chairperson Of The Board | Disposed M | 2,048 | $0.00 | $0 | 4,096 | Direct |
| 01 May, 2026 | Julie A. Dececco | Gc Chief Public Affairs Ofc | Acquired M | 73 | $0.00 | $0 | 1,797 | Direct |
| 01 May, 2026 | Julie A. Dececco | Gc Chief Public Affairs Ofc | Disposed F | 21 | $125.86 | $2.64K | 1,776 | Direct |
| 01 May, 2026 | Julie A. Dececco | Gc Chief Public Affairs Ofc | Disposed M | 73 | $0.00 | $0 | 73 | Direct |
| 16 Mar, 2026 | Angela A Korch | Evp Chief Financial Officer | Acquired P | 190 | $131.85 | $25.05K | 5,539 | Direct |
| 16 Mar, 2026 | Robert A Katz | Ceo Chairperson Of The Board | Acquired P | 37,500 | $131.81 | $4.94Mn | 285,312 | Direct |
| 01 Feb, 2026 | Celeste Burgoyne | Evp, Chief Revenue Officer | Acquired A | 17,281 | $0.00 | $0 | 17,281 | Direct |
| 01 Feb, 2026 | Angela A Korch | Evp Chief Financial Officer | Acquired M | 408 | $0.00 | $0 | 5,313 | Direct |
| 01 Feb, 2026 | Celeste Burgoyne | Evp, Chief Revenue Officer | Acquired A | 24,393 | $0.00 | $0 | 24,393 | Direct |
| 01 Feb, 2026 | Angela A Korch | Evp Chief Financial Officer | Disposed F | 202 | $133.07 | $26.88K | 5,111 | Direct |
| 01 Feb, 2026 | Angela A Korch | Evp Chief Financial Officer | Acquired M | 473 | $0.00 | $0 | 5,584 | Direct |
| 01 Feb, 2026 | Celeste Burgoyne | Evp, Chief Revenue Officer | Acquired A | 9,875 | $0.00 | $0 | 9,875 | Direct |
| 01 Feb, 2026 | Celeste Burgoyne | Evp, Chief Revenue Officer | Acquired A | 38,665 | $0.00 | $0 | 38,665 | Direct |
| 01 Feb, 2026 | Angela A Korch | Evp Chief Financial Officer | Disposed F | 235 | $133.07 | $31.27K | 5,349 | Direct |
| 01 Feb, 2026 | Angela A Korch | Evp Chief Financial Officer | Disposed M | 408 | $0.00 | $0 | 0 | Direct |
| 01 Feb, 2026 | Angela A Korch | Evp Chief Financial Officer | Disposed M | 473 | $0.00 | $0 | 0 | Direct |
| 01 Nov, 2025 | Julie A. Dececco | Gc Chief Public Affairs Ofc | Acquired M | 106 | $0.00 | $0 | 1,755 | Direct |