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%
1m000———
3m000———
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 $146.87+9.0% since postedas of Sep 18, 4:30 PM ET
1d+0.8%
3d+0.8%
1w+10.6%
1m+6.8%
3m—
6m—
1y—
View filing on SEC.gov →

End of results.