Graham G. Walmsley

Director · OLMA, AKRO

As of 2026-09-27, Graham G. Walmsley has 30 Form 4 transactions on record across 2 companies — 18 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: $258KIndirect: $12.3M$12.6Mas of 2026-09-27
  • Direct $258K
  • Indirect $12.3M
OLMAindirect1,408,875 sh$12.3M
OLMAdirect29,500 sh$258K

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

AKRO · 23 trades
2025-12-09: Disposition, 9,398 sh2025-12-09: Disposition, 1,200,000 sh2025-12-09: Disposition, 93,000 sh2025-12-09: Disposition, 15,000 sh2025-12-09: Disposition, 93,000 sh2025-12-09: Disposition, 15,000 sh2025-12-09: Disposition, 1,200,000 sh2025-12-09: Disposition, 9,398 sh2025-10-08: Option exercise, 26,000 sh ($599K)2025-10-08: Option exercise, 23,832 sh ($476K)2025-10-08: Option exercise, 13,000 sh ($342K)2025-10-08: Option exercise, 13,000 sh ($328K)2025-10-08: Option exercise, 15,000 sh ($122K)2025-10-08: Option exercise, 13,000 sh ($0)2025-10-08: Option exercise, 23,832 sh ($0)2025-10-08: Option exercise, 26,000 sh ($0)2025-10-08: Option exercise, 15,000 sh ($0)2025-06-03: Award / grant, 9,398 sh ($0)2025-03-27: Purchase, 50,000 sh ($2.2M)2025-03-26: Purchase, 58,691 sh ($2.5M)2025-03-25: Purchase, 91,309 sh ($4.1M)2025-01-30: Purchase, 200,000 sh ($9.6M)2024-06-08: Award / grant, 26,000 sh ($0)
OLMA · 7 trades
2026-06-18: Award / grant, 29,500 sh ($0)2025-06-11: Award / grant, 24,150 sh ($0)2024-12-17: Purchase, 700,761 sh ($4.7M)2024-12-17: Sale, 700,761 sh ($4.7M)2024-06-14: Award / grant, 23,000 sh ($0)2024-06-04: Sale, 700,000 sh ($10.4M)2024-06-04: Sale, 475,000 sh ($7.1M)

Filing ledger

DateCompanyActionShares @ priceValueOwnership ΔOwned afterFiling
2025-03-27AKROPurchase50,000 @ $43.55$2.2M+4.3% of holding1,200,000Form 4
2025-03-26AKROPurchase58,691 @ $43.01$2.5M+5.4% of holding1,150,000Form 4
2025-03-25AKROPurchase91,309 @ $44.75$4.1M+9.1% of holding1,091,309Form 4
2025-01-30AKROPurchase200,000 @ $48.00$9.6M+25.0% of holding1,000,000Form 4
2024-12-17OLMAPurchase700,761 @ $6.75$4.7M−33.2% of holding1,408,875Form 4
2024-12-17OLMASale700,761 @ $6.75$4.7M−100.0% of holding0Form 4
2024-06-04OLMASale700,000 @ $14.85$10.4M−50.0% of holding700,761Form 4
2024-06-04OLMASale475,000 @ $14.85$7.1M−40.1% of holding708,114Form 4
22 award / exercise / gift records — not counted as purchases
DateCompanyActionSharesOwned afterFiling
2026-06-18OLMAAward / grant29,50029,500Form 4
2025-12-09AKRODisposition9,3980Form 4
2025-12-09AKRODisposition1,200,0000Form 4
2025-12-09AKRODisposition93,0000Form 4
2025-12-09AKRODisposition15,0000Form 4
2025-12-09AKRODisposition93,0000Form 4
2025-12-09AKRODisposition15,0000Form 4
2025-12-09AKRODisposition1,200,0000Form 4
2025-12-09AKRODisposition9,3980Form 4
2025-10-08AKROOption exercise26,00028,168Form 4
2025-10-08AKROOption exercise23,83293,000Form 4
2025-10-08AKROOption exercise13,00056,168Form 4
2025-10-08AKROOption exercise13,00069,168Form 4
2025-10-08AKROOption exercise15,00043,168Form 4
2025-10-08AKROOption exercise13,0000Form 4
2025-10-08AKROOption exercise23,8320Form 4
2025-10-08AKROOption exercise26,0000Form 4
2025-10-08AKROOption exercise15,0000Form 4
2025-06-11OLMAAward / grant24,15024,150Form 4
2025-06-03AKROAward / grant9,39811,566Form 4
2024-06-14OLMAAward / grant23,00023,000Form 4
2024-06-08AKROAward / grant26,00026,000Form 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.