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Who

Guy Macdonald

Director

Company insider

Files Form 4 as: Director, Scynexis; President and Chief Executive, Tetraphase Pharmaceuticals; Executive VP, Operations, Idenix Pharmaceuticals.

Every Form 4 they filed

In numbers

Trades disclosed
142
Buys
2
Sells
20
Bought
$146K
Sold
$8.3M
Companies
3
Companies where not an officer
1
First trade
7 Mar 2006
Last trade
26 Jun 2026
Last filed
30 Jun 2026

Companies traded

Where they are an officer
Tetraphase PharmaceuticalsDirector, Officer · last 28 Jul 20200 buys · 20 sells
Idenix PharmaceuticalsOfficer · last 1 Jun 20070 buys · 0 sells
Everywhere else they filed: board seats, 10% stakes, other companies
SCYX ScynexisDirector · Biotechnology · last 26 Jun 20262 buys · 0 sells

Activity over time

1 Nov 2024 – 1 Oct 2026
101Nov 24May 25Nov 25Apr 26Oct 26

Buys above the line, sells below, each month.

Every trade

TradedCompanyWhatAmount
26 Jun 2026filed 30 Jun 2026SCYX ScynexisBiotechnologySEC FORM 4 Code A—2,875 at $0.00filing
26 Jun 2026filed 30 Jun 2026SCYX Scynexisoption or derivative · BiotechnologySEC FORM 4 Code A—2,875 at $0.00filing
26 Jun 2026filed 30 Jun 2026SCYX Scynexisoption or derivative · BiotechnologySEC FORM 4 Code A—2,875 at $0.00filing
26 Jun 2026filed 30 Jun 2026SCYX ScynexisBiotechnologySEC FORM 4 Code A—2,875 at $0.00filing
26 Jun 2025filed 30 Jun 2025SCYX Scynexisoption or derivative · BiotechnologySEC FORM 4 Code A—23,000 at $0.00filing
26 Jun 2025filed 30 Jun 2025SCYX ScynexisBiotechnologySEC FORM 4 Code A—23,000 at $0.00filing
20 Jun 2024filed 21 Jun 2024SCYX Scynexisoption or derivative · BiotechnologySEC FORM 4 Code A—23,000 at $0.00filing
20 Jun 2024filed 21 Jun 2024SCYX ScynexisBiotechnologySEC FORM 4 Code A—23,000 at $0.00filing
15 Jun 2023filed 23 Jun 2023SCYX ScynexisBiotechnologySEC FORM 4 Code A—10,000 at $0.00filing
15 Jun 2023filed 20 Jun 2023SCYX Scynexisoption or derivative · BiotechnologySEC FORM 4 Code A—10,000 at $0.00filing
17 Jun 2022filed 22 Jun 2022SCYX Scynexisoption or derivative · BiotechnologySEC FORM 4 Code A—10,000 at $0.00filing
17 Jun 2022filed 22 Jun 2022SCYX ScynexisBiotechnologySEC FORM 4 Code A—10,000 at $0.00filing
16 Jun 2021filed 21 Jun 2021SCYX Scynexisoption or derivative · BiotechnologySEC FORM 4 Code A—10,000 at $0.00filing
21 Dec 2020filed 23 Dec 2020SCYX Scynexisoption or derivative · BiotechnologySEC FORM 4 Code A—4,000filing
21 Dec 2020filed 23 Dec 2020SCYX Scynexisoption or derivative · BiotechnologySEC FORM 4 Code A—4,000filing
21 Dec 2020filed 23 Dec 2020SCYX ScynexisBiotechnologySEC FORM 4 Bought$50K8,000 at $6.25filing
28 Jul 2020filed 29 Jul 2020Tetraphase PharmaceuticalsSEC FORM 4 Code U—15,703.4filing
6 Jul 2020filed 31 Mar 2021SCYX Scynexisoption or derivative · BiotechnologySEC FORM 4 Code A—55,000 at $0.00filing
6 Jul 2020filed 8 Jul 2020SCYX Scynexisoption or derivative · BiotechnologySEC FORM 4 Code A—45,000 at $0.00filing
6 Dec 2019filed 9 Dec 2019Tetraphase PharmaceuticalsSEC FORM 4 Sold$13K5,734.65 at $2.25filing

News

No headline names them, or the companies they trade most, lately.

Sectors

Health Care2
Not placed20

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

Related people

Nobody else traded the same names lately.