Gunderson Thomas J.

Director · TMDX, MMSI

As of 2026-09-16, Gunderson Thomas J. has 14 Form 4 transactions on record across 2 companies — 9 in the trailing 12 months.

Everything this person has disclosed to the SEC on Form 4 — across every company they file for — reconstructed from the public record. A filing history, not a tip sheet.

Trades by company

MMSI · 9 trades
2026-05-20: Option exercise, 13,750 sh ($717K)2026-05-20: Option exercise, 7,500 sh ($391K)2026-05-20: Option exercise, 7,500 sh ($0)2026-05-20: Option exercise, 13,750 sh ($0)2026-05-18: Award / grant, 3,457 sh ($0)2025-05-15: Award / grant, 2,152 sh ($0)2025-02-28: Withheld for tax, 12,806 sh ($1.3M)2025-02-28: Option exercise, 25,000 sh ($1.3M)2025-02-28: Option exercise, 25,000 sh ($0)
TMDX · 5 trades
2026-06-15: Sale, 9,624 sh ($722K)2026-06-15: Option exercise, 19,285 sh ($43K)2026-06-15: Option exercise, 19,285 sh ($0)2026-05-20: Award / grant, 2,922 sh ($0)2025-05-22: Award / grant, 2,134 sh ($0)

Filing ledger

DateCompanyActionShares @ priceValueOwnership ΔOwned afterFiling
2026-06-15TMDXSale9,624 @ $75.06$722K−36.6% of holding16,642Form 4
13 award / exercise / gift records — not counted as purchases
DateCompanyActionSharesOwned afterFiling
2026-06-15TMDXOption exercise19,28526,266Form 4
2026-06-15TMDXOption exercise19,2850Form 4
2026-05-20MMSIOption exercise13,75053,241Form 4
2026-05-20MMSIOption exercise7,50060,741Form 4
2026-05-20MMSIOption exercise7,5000Form 4
2026-05-20TMDXAward / grant2,9226,981Form 4
2026-05-20MMSIOption exercise13,7500Form 4
2026-05-18MMSIAward / grant3,45739,491Form 4
2025-05-22TMDXAward / grant2,1344,059Form 4
2025-05-15MMSIAward / grant2,15236,034Form 4
2025-02-28MMSIWithheld for tax12,80633,882Form 4
2025-02-28MMSIOption exercise25,00046,688Form 4
2025-02-28MMSIOption exercise25,0000Form 4

Source: SEC Form 4 filings. Each row links to its original filing.

Research tool, not investment advice — historical frequencies, not recommendations. A product of Marovel Technologies LLC. Full terms.