Guindo Chirfi

SEC Form 4 insider
EVP, Access, Policy & Comms · Merck & Co., Inc. ($MRK)
1 thesis · first seen Aug 13, 2026
WindowThesesResolvedWinsWin rateAvg returnMedian return
1d1100%+0.8%+0.8%
3d1100%+0.8%+0.8%
1w1100%+10.6%+10.6%
1m1100%+6.2%+6.2%
3m1100%+9.2%+9.2%
6m000———
1y000———

Past performance does not predict future results. Informational only, not investment advice.

Thesis history

$MRKSEC Form 4bearish
Sold 10,000 @ $135.00 avg · $1,350,000 · 2026-08-13

Form 4: Guindo Chirfi sold MRK

Guindo Chirfi (EVP, Access, Policy & Comms at Merck & Co., Inc.) reported an open-market sale of 10,000 shares of MRK at an average $135.00, roughly $1,350,000, in a Form 4 filed 2026-08-13.

At post $134.76Now $147.18+9.2% since postedas of Nov 12, 9:16 AM ET
1d+0.8%
3d+0.8%
1w+10.6%
1m+6.2%
3m+9.2%
6m—
1y—
View filing on SEC.gov →

End of results.