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$ Value

$0

Shares

2,101

Price

$0

Filed

Mar 16

Insider

Name

Szyman Catherine M.

Title

CEO

CIK

0001438538

Roles

Director Officer

Transaction Details

Transaction Date

2026-03-11

Code

M

Table

Non-Derivative

Ownership

Direct

Equity Swap

No

Shares After

8,674

Footnotes

As previously reported, the reporting person was granted 8,407 restricted stock units (RSUs) on March 11, 2025 and will vest ratably over four years, 25% of which vested on March 11, 2026. | These shares were withheld by the Issuer in order to satisfy certain tax withholding obligations in connection with the issuance of shares upon the vesting of certain RSUs. | Each RSU represents the contingent right to receive one share of common stock of the Issuer upon vesting of the RSU.

Filing Info

Accession No.

0000937556-26-000044

Form Type

4

Issuer CIK

0000937556

Szyman Catherine M.'s History

Date Ticker Type Value
2026-03-11 MASI M $0
2026-03-11 MASI F $188K
2026-03-11 MASI M $0
2026-03-06 MASI A $0
2026-02-12 MASI M $1.5M
2026-02-12 MASI F $0
2026-02-12 MASI M $0

Other Insiders at MASI (90d)

Insider Bought Sold Last
Sampath Anand
EVP, Operations
2026-03-06
Sampath Anand
EVP, Ops & Clinical Research
$2.6M 2026-01-28
Szyman Catherine M.
CEO
2026-03-11
Dadswell Charles
EVP, General Counsel
2026-03-06
Young Micah W
EVP & Chief Financial Officer
2026-03-11
Benner Tim
Chief Marketing Officer
2026-03-06
Hellmann Elisabeth A
Chief Human Resources Officer
2026-03-06
Politan Capital Management LP 2026-03-12
Meehan Greg Allen
Chief Commerical Officer
2026-03-06