Guindo Chirfi

Director · Officer · MRK, BEAM

As of 2026-09-16, Guindo Chirfi has 19 Form 4 transactions on record across 2 companies — 12 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: $5.8MIndirect: $0$5.8Mas of 2026-09-16
  • Direct $5.8M
  • Indirect $0
MRKdirect36,613 sh$5.3M
BEAMdirect19,676 sh$455K

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

MRK · 17 trades
2026-08-13: Sale, 10,000 sh ($1.4M)2026-08-06: Sale, 15,000 sh ($2.0M)2026-05-05: Award / grant, 6,628 sh ($0)2026-05-05: Award / grant, 19,402 sh ($0)2026-04-29: Option exercise, 1,967 sh ($216K)2026-04-29: Withheld for tax, 969 sh ($107K)2026-04-29: Option exercise, 1,967 sh ($0)2026-02-12: Sale, 10,000 sh ($1.2M)2026-02-09: Sale, 10,000 sh ($1.2M)2026-02-05: Sale, 20,000 sh ($2.4M)2026-01-26: Award / grant, 9,865 sh ($1.1M)2025-08-04: Option exercise, 36,903 sh ($2.9M)2025-08-04: Withheld for tax, 18,175 sh ($1.4M)2025-08-04: Option exercise, 36,903 sh ($0)2025-04-29: Award / grant, 5,902 sh ($0)2025-04-29: Award / grant, 26,867 sh ($0)2025-01-27: Award / grant, 28,158 sh ($2.8M)
BEAM · 2 trades
2026-06-03: Award / grant, 19,676 sh ($0)2025-06-04: Award / grant, 33,662 sh ($0)

Filing ledger

DateCompanyActionShares @ priceValueOwnership ΔOwned afterFiling
2026-08-13MRKSale10,000 @ $135.00$1.4M−21.5% of holding36,613Form 4
2026-08-06MRKSale15,000 @ $131.00$2.0M−24.3% of holding46,613Form 4
2026-02-12MRKSale10,000 @ $121.46$1.2M−14.2% of holding60,615Form 4
2026-02-09MRKSale10,000 @ $118.41$1.2M−12.4% of holding70,615Form 4
2026-02-05MRKSale20,000 @ $121.88$2.4M−19.9% of holding80,615Form 4
14 award / exercise / gift records — not counted as purchases
DateCompanyActionSharesOwned afterFiling
2026-06-03BEAMAward / grant19,67619,676Form 4
2026-05-05MRKAward / grant6,6286,628Form 4
2026-05-05MRKAward / grant19,40219,402Form 4
2026-04-29MRKOption exercise1,96762,582Form 4
2026-04-29MRKWithheld for tax96961,613Form 4
2026-04-29MRKOption exercise1,9673,935Form 4
2026-01-26MRKAward / grant9,865100,615Form 4
2025-08-04MRKOption exercise36,903107,409Form 4
2025-08-04MRKWithheld for tax18,17589,234Form 4
2025-08-04MRKOption exercise36,9030Form 4
2025-06-04BEAMAward / grant33,66233,662Form 4
2025-04-29MRKAward / grant5,9025,902Form 4
2025-04-29MRKAward / grant26,86726,867Form 4
2025-01-27MRKAward / grant28,15869,144Form 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.