McDonnell Michael R.

Director · Officer · MRNA, MMSI, BAX, BIIB

As of 2026-09-16, McDonnell Michael R. has 18 Form 4 transactions on record across 4 companies — 6 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.

Reconstructed holdings

Direct: $2.0MIndirect: $0$2.0Mas of 2026-09-16
  • Direct $2.0M
  • Indirect $0
MMSIdirect9,852 sh$849K
MRNAdirect5,733 sh$835K
BAXdirect14,647 sh$345K

Reconstructed from this person's own Form 4 filings — the total each filing reported owning afterward, priced at the close on the as-of date shown. A filed position can lag the real one.

Direct and indirect holdings (e.g. through a trust or fund) are tagged separately, as filed.

Trades by company

BIIB · 9 trades
2025-02-10: Withheld for tax, 1,371 sh ($195K)2025-02-10: Option exercise, 3,257 sh ($0)2025-02-10: Option exercise, 3,257 sh ($0)2025-02-07: Withheld for tax, 786 sh ($111K)2025-02-07: Withheld for tax, 716 sh ($101K)2025-02-07: Option exercise, 2,216 sh ($0)2025-02-07: Option exercise, 2,335 sh ($0)2025-02-07: Option exercise, 2,335 sh ($0)2025-02-07: Option exercise, 2,216 sh ($0)
MMSI · 4 trades
2026-05-18: Award / grant, 3,457 sh ($0)2025-06-02: Sale, 1,750 sh ($165K)2025-05-30: Sale, 1,750 sh ($165K)2025-05-15: Award / grant, 2,152 sh ($0)
MRNA · 3 trades
2026-07-08: Award / grant, 5,733 sh ($0)2026-07-08: Award / grant, 1,618 sh ($0)2026-07-08: Award / grant, 7,415 sh ($0)
BAX · 2 trades
2026-05-05: Award / grant, 12,836 sh ($0)2026-02-13: Award / grant, 1,811 sh ($0)

Filing ledger

DateCompanyActionShares @ priceValueOwnership ΔOwned afterFiling
2025-06-02MMSISale1,750 @ $94.51$165K−21.5% of holding6,395Form 4
2025-05-30MMSISale1,750 @ $94.30$165K−17.7% of holding8,145Form 4
16 award / exercise / gift records — not counted as purchases
DateCompanyActionSharesOwned afterFiling
2026-07-08MRNAAward / grant5,7335,733Form 4
2026-07-08MRNAAward / grant1,6181,618Form 4
2026-07-08MRNAAward / grant7,4157,415Form 4
2026-05-18MMSIAward / grant3,4579,852Form 4
2026-05-05BAXAward / grant12,83614,647Form 4
2026-02-13BAXAward / grant1,8111,811Form 4
2025-05-15MMSIAward / grant2,1529,895Form 4
2025-02-10BIIBWithheld for tax1,37124,341Form 4
2025-02-10BIIBOption exercise3,25725,712Form 4
2025-02-10BIIBOption exercise3,2570Form 4
2025-02-07BIIBWithheld for tax78620,955Form 4
2025-02-07BIIBWithheld for tax71622,455Form 4
2025-02-07BIIBOption exercise2,2164,434Form 4
2025-02-07BIIBOption exercise2,33521,741Form 4
2025-02-07BIIBOption exercise2,3352,335Form 4
2025-02-07BIIBOption exercise2,21623,171Form 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.