MCGIRR DAVID W J

Director · RYTM, INSM, XFOR

As of 2026-09-16, MCGIRR DAVID W J has 21 Form 4 transactions on record across 3 companies — 7 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: $5.7MIndirect: $6.5M$12.2Mas of 2026-09-16
  • Direct $5.7M
  • Indirect $6.5M
INSMindirect53,400 sh$6.5M
INSMdirect44,323 sh$5.4M
RYTMdirect2,324 sh$228K
XFORdirect4,722 sh$17K

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

RYTM · 14 trades
2026-06-24: Award / grant, 2,324 sh ($0)2026-06-24: Award / grant, 3,691 sh ($0)2026-06-23: Option exercise, 4,712 sh ($0)2026-06-23: Option exercise, 4,712 sh2026-06-23: Option exercise, 4,712 sh2025-06-24: Award / grant, 4,712 sh ($0)2025-06-24: Award / grant, 7,037 sh ($0)2025-06-18: Option exercise, 4,000 sh ($0)2025-06-18: Option exercise, 4,000 sh2025-06-18: Option exercise, 4,000 sh2025-06-03: Sale, 55,558 sh ($3.6M)2025-06-03: Sale, 9,873 sh ($648K)2025-06-03: Option exercise, 65,431 sh ($300K)2025-06-03: Option exercise, 65,431 sh ($0)
INSM · 6 trades
2026-02-09: Gift, 53,400 sh ($0)2026-02-09: Gift, 53,400 sh ($0)2025-06-04: Sale, 3,000 sh ($220K)2025-06-03: Sale, 3,250 sh ($232K)2025-05-15: Award / grant, 5,058 sh2025-05-15: Award / grant, 5,058 sh
XFOR · 1 trade
2025-06-09: Award / grant, 1,500 sh ($0)

Filing ledger

DateCompanyActionShares @ priceValueOwnership ΔOwned afterFiling
2025-06-04INSMSale3,000 @ $73.27$220K−3.0% of holding97,723Form 4
2025-06-03RYTMSale55,558 @ $65.15$3.6M−81.2% of holding12,873Form 4
2025-06-03RYTMSale9,873 @ $65.64$648K−76.7% of holding3,000Form 4
2025-06-03INSMSale3,250 @ $71.30$232K−3.1% of holding100,723Form 4
17 award / exercise / gift records — not counted as purchases
DateCompanyActionSharesOwned afterFiling
2026-06-24RYTMAward / grant2,3242,324Form 4
2026-06-24RYTMAward / grant3,6913,691Form 4
2026-06-23RYTMOption exercise4,7120Form 4
2026-06-23RYTMOption exercise4,71211,712Form 4
2026-06-23RYTMOption exercise4,71211,712Form 4
2026-02-09INSMGift53,40053,400Form 4
2026-02-09INSMGift53,40044,323Form 4
2025-06-24RYTMAward / grant4,7124,712Form 4
2025-06-24RYTMAward / grant7,0377,037Form 4
2025-06-18RYTMOption exercise4,0000Form 4
2025-06-18RYTMOption exercise4,0007,000Form 4
2025-06-18RYTMOption exercise4,0007,000Form 4
2025-06-09XFORAward / grant1,5004,722Form 4
2025-06-03RYTMOption exercise65,43168,431Form 4
2025-06-03RYTMOption exercise65,4310Form 4
2025-05-15INSMAward / grant5,058103,973Form 4
2025-05-15INSMAward / grant5,058103,973Form 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.