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| Date | Name | Title | Action | No Shares | Price Per Share |
|---|---|---|---|---|---|
Insider Transactions For MASI | |||||
| 2026-03-12 | Politan, Capital Management Lp | Director by deputization | Purchased | 130869 | $0.00 |
| 2026-03-11 | Young, Micah W | EVP & Chief Financial Officer | Purchased | 873 | $0.00 |
| 2026-03-11 | Szyman, Catherine M. | Director, CEO | Sold | 1069 | $175.47 |
| 2026-03-11 | Szyman, Catherine M. | Director, CEO | Purchased | 2101 | $0.00 |
| 2026-03-11 | Szyman, Catherine M. | Director, CEO | Sold | 2101 | $0.00 |
| 2026-03-11 | Young, Micah W | EVP & Chief Financial Officer | Sold | 873 | $0.00 |
| 2026-03-11 | Politan, Capital Management Lp | Director by deputization | Purchased | 142681 | $0.00 |
| 2026-03-11 | Young, Micah W | EVP & Chief Financial Officer | Sold | 471 | $175.47 |
| 2026-03-06 | Szyman, Catherine M. | Director, CEO | Purchased | 39904 | $0.00 |
| 2026-03-06 | Dadswell, Charles | EVP, General Counsel | Purchased | 10261 | $0.00 |
| 2026-03-06 | Meehan, Greg Allen | Chief Commerical Officer | Purchased | 8550 | $0.00 |
| 2026-03-06 | Benner, Tim | Chief Marketing Officer | Purchased | 6128 | $0.00 |
| 2026-03-06 | Young, Micah W | EVP & Chief Financial Officer | Purchased | 17671 | $0.00 |
| 2026-03-06 | Hellmann, Elisabeth A | Chief Human Resources Officer | Purchased | 5985 | $0.00 |
| 2026-03-06 | Sampath, Anand | EVP, Operations | Purchased | 6840 | $0.00 |
| 2026-02-27 | Young, Micah W | EVP & Chief Financial Officer | Purchased | 15000 | $0.00 |
| 2026-02-27 | Young, Micah W | EVP & Chief Financial Officer | Sold | 8093 | $175.35 |
| 2026-02-27 | Young, Micah W | EVP & Chief Financial Officer | Sold | 15000 | $0.00 |
| 2026-02-26 | Young, Micah W | EVP & Chief Financial Officer | Purchased | 2034 | $0.00 |
| 2026-02-26 | Young, Micah W | EVP & Chief Financial Officer | Sold | 1123 | $175.22 |
