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Who

Chirfi Guindo

EVP, Access, Policy & Comms

Company insider

Files Form 4 as: EVP, Access, Policy & Comms, Merck & Company; Director, Beam Therapeutics; Head of Glob Prod Strat & Com, Biogen.

In numbers

Trades disclosed
90
Buys
0
Sells
6
Bought
$0
Sold
$17.7M
Companies
3
Companies where not an officer
1
First trade
1 Dec 2017
Last trade
13 Aug 2026
Last filed
13 Aug 2026

Companies traded

Where they are an officer
MRK Merck & CompanyOfficer · Pharmaceuticals · last 13 Aug 20260 buys · 5 sells
BIIB BiogenOfficer · Biotechnology · last 18 Feb 20220 buys · 1 sell
Everywhere else they filed: board seats, 10% stakes, other companies
BEAM Beam TherapeuticsDirector · Genomics & Gene Editing · last 3 Jun 20260 buys · 0 sells

Activity over time

1 Nov 2024 – 1 Oct 2026
30Nov 24May 25Nov 25Apr 26Oct 26

Buys above the line, sells below, each month.

Every trade

TradedCompanyWhatAmount
13 Aug 2026filed 13 Aug 2026MRK Merck & CompanyPharmaceuticalsSEC FORM 4 Sold$1.4M10,000 at $135.00filing
13 Aug 2026filed 13 Aug 2026MRK Merck & CompanyPharmaceuticalsSEC FORM 4 Sold$1.4M10,000 at $135.00filing
6 Aug 2026filed 7 Aug 2026MRK Merck & CompanyPharmaceuticalsSEC FORM 4 Sold$2.0M15,000 at $131.00filing
6 Aug 2026filed 7 Aug 2026MRK Merck & CompanyPharmaceuticalsSEC FORM 4 Sold$2.0M15,000 at $131.00filing
3 Jun 2026filed 5 Jun 2026BEAM Beam Therapeuticsoption or derivative · Genomics & Gene EditingSEC FORM 4 Code A—19,676 at $0.00filing
3 Jun 2026filed 5 Jun 2026BEAM Beam Therapeuticsoption or derivative · Genomics & Gene EditingSEC FORM 4 Code A—19,676 at $0.00filing
5 May 2026filed 7 May 2026MRK Merck & Companyoption or derivative · PharmaceuticalsSEC FORM 4 Code A—6,628 at $0.00filing
5 May 2026filed 7 May 2026MRK Merck & Companyoption or derivative · PharmaceuticalsSEC FORM 4 Code A—19,402 at $0.00filing
5 May 2026filed 7 May 2026MRK Merck & Companyoption or derivative · PharmaceuticalsSEC FORM 4 Code A—6,628 at $0.00filing
5 May 2026filed 7 May 2026MRK Merck & Companyoption or derivative · PharmaceuticalsSEC FORM 4 Code A—19,402 at $0.00filing
29 Apr 2026filed 1 May 2026MRK Merck & CompanyPharmaceuticalsSEC FORM 4 Code M$216K1,967 at $110.03filing
29 Apr 2026filed 1 May 2026MRK Merck & CompanyPharmaceuticalsSEC FORM 4 Code F$107K969 at $110.03filing
29 Apr 2026filed 1 May 2026MRK Merck & Companyoption or derivative · PharmaceuticalsSEC FORM 4 Code M—1,967 at $0.00filing
29 Apr 2026filed 1 May 2026MRK Merck & Companyoption or derivative · PharmaceuticalsSEC FORM 4 Code M—1,967 at $0.00filing
29 Apr 2026filed 1 May 2026MRK Merck & CompanyPharmaceuticalsSEC FORM 4 Code M$216K1,967 at $110.03filing
29 Apr 2026filed 1 May 2026MRK Merck & CompanyPharmaceuticalsSEC FORM 4 Code F$107K969 at $110.03filing
12 Feb 2026filed 12 Feb 2026MRK Merck & CompanyPharmaceuticalsSEC FORM 4 Sold$1.2M10,000 at $121.46filing
12 Feb 2026filed 12 Feb 2026MRK Merck & CompanyPharmaceuticalsSEC FORM 4 Sold$1.2M10,000 at $121.46filing
9 Feb 2026filed 9 Feb 2026MRK Merck & CompanyPharmaceuticalsSEC FORM 4 Sold$1.2M10,000 at $118.41filing
9 Feb 2026filed 9 Feb 2026MRK Merck & CompanyPharmaceuticalsSEC FORM 4 Sold$1.2M10,000 at $118.41filing

Sectors

Health Care6

Buys in green, sells in red, by the company’s sector.

Related people

Sean GodboutChief Accounting Officer · Chief Accounting Officer at Biogen, filing Form 4 there in the last year
Surendralal Lanca KarsanbhaiDirector · Director at Merck & Co, filing Form 4 there in the last year
Mary Ellen CoeDirector · Director at Merck & Co, filing Form 4 there in the last year
Christine E. SeidmanDirector · Director at Merck & Co, filing Form 4 there in the last year
Michael PariniChief Legal Officer · Chief Legal Officer at Biogen, filing Form 4 there in the last year
Maria Elvira SalazarRepresentative, FL-27 · Also traded MRK and BIIB in the last 90 days
Ro KhannaRepresentative, CA-17 · Also traded MRK in the last 90 days
Michael T. McCaulRepresentative, TX-10 · Also traded MRK in the last 90 days