| Insiders | Shares | % | Avg Price | Total $ | |
|---|---|---|---|---|---|
| Buys | 2 | +3,200 | 10% | $146.41 | +$468,500 |
| Sells | 2 | -28,680 | 90% | $146.04 | -$4,188,352 |
| Net | 0 | -25,480 | -80% | -$3,719,852 |
Showing up to 300 most recent insider transactions from the last 12 months.
| Insider | Symbol | Class | Transaction | % | Value $ | * Price $ | Shares | Shares Owned | Date | Ownership |
|---|---|---|---|---|---|---|---|---|---|---|
| Politan Capital Management LP | MASI | Forward Sale Contract (obligation to sell) | Other | 130,869 | 130,869 | 12 Mar 2026 | See footnotes | |||
| Politan Capital Management LP | MASI | Forward Sale Contract (obligation to sell) | Other | 142,681 | 142,681 | 11 Mar 2026 | See footnotes | |||
| Greg Allen Meehan | MASI | Restricted Stock Units | Award | 8,550 | 8,550 | 06 Mar 2026 | Direct | |||
| Tim Benner | MASI | Restricted Stock Units | Award | 6,128 | 6,128 | 06 Mar 2026 | Direct | |||
| Elisabeth A. Hellmann | MASI | Restricted Stock Units | Award | 5,985 | 5,985 | 06 Mar 2026 | Direct | |||
| Anand Sampath | MASI | Restricted Stock Units | Award | 6,840 | 6,840 | 06 Mar 2026 | Direct | |||
| Charles Dadswell | MASI | Restricted Stock Units | Award | 10,261 | 10,261 | 06 Mar 2026 | Direct | |||
| Micah W. Young | MASI | Restricted Stock Units | Award | 17,671 | 17,671 | 06 Mar 2026 | Direct | |||
| Catherine M. Szyman | MASI | Restricted Stock Units | Award | 39,904 | 39,904 | 06 Mar 2026 | Direct | |||
| Micah W. Young | MASI | Common Stock | Tax liability | -24.3% | -8,093 | 25,254 | 27 Feb 2026 | Direct | ||
| Micah W. Young | MASI | Common Stock | Award | 81.8% | 15,000 | 33,347 | 27 Feb 2026 | Direct | ||
| Micah W. Young | MASI | Restricted Stock Units | Options Exercise | -100% | -15,000 | 0 | 27 Feb 2026 | Direct | ||
| Micah W. Young | MASI | Common Stock | Tax liability | -5.77% | -1,123 | 18,347 | 26 Feb 2026 | Direct | ||
| Micah W. Young | MASI | Common Stock | Award | 11.7% | 2,034 | 19,470 | 26 Feb 2026 | Direct | ||
| Catherine M. Szyman | MASI | Common Stock | Tax liability | -41% | -4,568 | 6,573 | 12 Feb 2026 | Direct | ||
| Catherine M. Szyman | MASI | Common Stock | Options Exercise | 11,141 | 11,141 | 12 Feb 2026 | Direct | |||
| Catherine M. Szyman | MASI | Restricted Stock Units | Options Exercise | -33.3% | -11,141 | 22,283 | 12 Feb 2026 | Direct | ||
| Anand Sampath | MASI | Common Stock | Sale | -31.4% | $2,555,570 | $136.81 | -18,680 | 40,909 | 28 Jan 2026 | Direct |
| Anand Sampath | MASI | Common Stock | Options Exercise | 101.4% | 30,000 | 59,589 | 28 Jan 2026 | Direct | ||
| Anand Sampath | MASI | Non-Qualified Stock Option (Right to Buy) | Options Exercise | -100% | -30,000 | 0 | 28 Jan 2026 | Direct | ||
| Omar Ahmed | MASI | Common Stock | Tax liability | -23% | -974 | 3,268 | 13 Nov 2025 | Direct | ||
| Omar Ahmed | MASI | Common Stock | Options Exercise | 139.9% | 2,474 | 4,242 | 13 Nov 2025 | Direct | ||
| Omar Ahmed | MASI | Restricted Stock Units | Options Exercise | -100% | -2,474 | 0 | 13 Nov 2025 | Direct | ||
| Blair Tripodi | MASI | Common Stock | Tax liability | -36.9% | -8,078 | 13,818 | 23 Sep 2025 | Direct | ||
| Blair Tripodi | MASI | Common Stock | Options Exercise | 217.5% | 15,000 | 21,896 | 23 Sep 2025 | Direct | ||
| Blair Tripodi | MASI | Restricted Stock Units | Options Exercise | -100% | -15,000 | 0 | 23 Sep 2025 | Direct | ||
| Politan Capital Management LP | MASI | Common Stock, par value $0.001 per share | Other | -2.69% | -126,888 | 4,589,648 | 29 Aug 2025 | See footnotes | ||
| Michelle Brennan | MASI | Common Stock | Purchase | 1.39% | $15,525 | $155.25 | 100 | 7,318 | 13 Aug 2025 | Direct |
| Michelle Brennan | MASI | Common Stock | Purchase | 1.4% | $15,035 | $150.35 | 100 | 7,218 | 12 Aug 2025 | Direct |
| William R. Jellison | MASI | Common Stock | Purchase | 167.6% | $437,940 | $145.98 | 3,000 | 4,790 | 11 Aug 2025 | Direct |
| Bilal Muhsin | MASI | Common Stock | Sale | -29.3% | $1,632,781 | $163.28 | -10,000 | 24,172 | 12 May 2025 | Direct |
| Bilal Muhsin | MASI | Common Stock | Options Exercise | 41.4% | 10,000 | 34,172 | 12 May 2025 | Direct | ||
| Bilal Muhsin | MASI | Non-Qualified Stock Option (Right to Buy) | Options Exercise | -100% | -10,000 | 0 | 12 May 2025 | Direct | ||
| Michelle Brennan | MASI | Restricted Stock Units | Award | 766 | 766 | 29 Apr 2025 | Direct | |||
| Darlene J. S. Solomon | MASI | Common Stock | Options Exercise | 1,790 | 1,790 | 29 Apr 2025 | Direct | |||
| Darlene J. S. Solomon | MASI | Restricted Stock Units | Award | 1,225 | 1,225 | 29 Apr 2025 | Direct | |||
| Darlene J. S. Solomon | MASI | Restricted Stock Units | Options Exercise | -100% | -1,790 | 0 | 29 Apr 2025 | Direct | ||
| Timothy J. Scannell | MASI | Common Stock | Options Exercise | 1,383 | 1,383 | 29 Apr 2025 | Direct | |||
| Timothy J. Scannell | MASI | Restricted Stock Units | Award | 1,225 | 1,225 | 29 Apr 2025 | Direct | |||
| Timothy J. Scannell | MASI | Restricted Stock Units | Options Exercise | -100% | -1,383 | 0 | 29 Apr 2025 | Direct | ||
| Wendy E. Lane | MASI | Common Stock | Options Exercise | 1,383 | 1,383 | 29 Apr 2025 | Direct | |||
| Wendy E. Lane | MASI | Restricted Stock Units | Award | 1,225 | 1,225 | 29 Apr 2025 | Direct | |||
| Wendy E. Lane | MASI | Restricted Stock Units | Options Exercise | -100% | -1,383 | 0 | 29 Apr 2025 | Direct | ||
| William R. Jellison | MASI | Common Stock | Award | 1,790 | 1,790 | 29 Apr 2025 | Direct | |||
| William R. Jellison | MASI | Restricted Stock Units | Award | 1,225 | 1,225 | 29 Apr 2025 | Direct | |||
| William R. Jellison | MASI | Restricted Stock Units | Options Exercise | -100% | -1,790 | 0 | 29 Apr 2025 | Direct | ||
| Michelle Brennan | MASI | Common Stock | Options Exercise | 33.6% | 1,790 | 7,118 | 29 Apr 2025 | Direct | ||
| Michelle Brennan | MASI | Restricted Stock Units | Award | 1,225 | 1,225 | 29 Apr 2025 | Direct | |||
| Michelle Brennan | MASI | Restricted Stock Units | Options Exercise | -100% | -1,790 | 0 | 29 Apr 2025 | Direct | ||
| Craig B. Reynolds | MASI | Common Stock | Options Exercise | 10.8% | 1,790 | 18,371 | 29 Apr 2025 | Direct |