DUNCAN BARBARA GAYLE

Director · AVIR, HALO, OVID

As of 2026-09-16, DUNCAN BARBARA GAYLE has 15 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: $1.0MIndirect: $0$1.0Mas of 2026-09-16
  • Direct $1.0M
  • Indirect $0
HALOdirect6,040 sh$655K
AVIRdirect37,700 sh$194K
OVIDdirect65,000 sh$174K

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

AVIR · 8 trades
2026-06-18: Award / grant, 37,700 sh ($0)2026-06-18: Award / grant, 26,700 sh ($0)2026-06-18: Option exercise, 29,600 sh ($0)2026-06-18: Option exercise, 29,600 sh ($0)2025-06-20: Option exercise, 29,600 sh ($0)2025-06-20: Option exercise, 29,600 sh ($0)2025-06-20: Award / grant, 29,600 sh ($0)2025-06-20: Award / grant, 41,200 sh ($0)
HALO · 4 trades
2026-05-05: Award / grant, 6,040 sh ($0)2026-05-05: Award / grant, 3,796 sh ($0)2025-05-01: Award / grant, 5,750 sh ($0)2025-05-01: Award / grant, 4,165 sh ($0)
OVID · 3 trades
2026-02-26: Award / grant, 65,000 sh ($0)2025-02-20: Award / grant, 45,000 sh ($0)2024-12-12: Award / grant, 90,000 sh ($0)

Filing ledger

DateCompanyActionShares @ priceValueOwnership ΔOwned afterFiling
15 award / exercise / gift records — not counted as purchases
DateCompanyActionSharesOwned afterFiling
2026-06-18AVIRAward / grant37,70037,700Form 4
2026-06-18AVIRAward / grant26,70026,700Form 4
2026-06-18AVIROption exercise29,6000Form 4
2026-06-18AVIROption exercise29,60092,350Form 4
2026-05-05HALOAward / grant6,0406,040Form 4
2026-05-05HALOAward / grant3,79623,715Form 4
2026-02-26OVIDAward / grant65,00065,000Form 4
2025-06-20AVIROption exercise29,6000Form 4
2025-06-20AVIROption exercise29,60062,750Form 4
2025-06-20AVIRAward / grant29,60029,600Form 4
2025-06-20AVIRAward / grant41,20041,200Form 4
2025-05-01HALOAward / grant5,7505,750Form 4
2025-05-01HALOAward / grant4,16519,919Form 4
2025-02-20OVIDAward / grant45,00045,000Form 4
2024-12-12OVIDAward / grant90,00090,000Form 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.