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Who

Konstantin Konstantinov

Director

Company insider

Files Form 4 as: Director, Repligen; Chief Technology Officer, Codiak BioSciences.

Every Form 4 they filed

In numbers

Trades disclosed
35
Buys
0
Sells
5
Bought
$0
Sold
$192K
Companies
2
Companies where not an officer
1
First trade
22 Jan 2021
Last trade
14 May 2026
Last filed
18 May 2026

Companies traded

Where they are an officer
Codiak BioSciencesOfficer · last 28 Mar 20230 buys · 5 sells
Everywhere else they filed: board seats, 10% stakes, other companies
RGEN RepligenDirector · Biotechnology · last 14 May 20260 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
14 May 2026filed 18 May 2026RGEN RepligenBiotechnologySEC FORM 4 Code A—995 at $0.00filing
14 May 2026filed 18 May 2026RGEN Repligenoption or derivative · BiotechnologySEC FORM 4 Code A—2,239 at $0.00filing
14 May 2026filed 18 May 2026RGEN Repligenoption or derivative · BiotechnologySEC FORM 4 Code A—2,239 at $0.00filing
14 May 2026filed 18 May 2026RGEN RepligenBiotechnologySEC FORM 4 Code A—995 at $0.00filing
15 May 2025filed 19 May 2025RGEN Repligenoption or derivative · BiotechnologySEC FORM 4 Code A—1,800 at $0.00filing
15 May 2025filed 19 May 2025RGEN RepligenBiotechnologySEC FORM 4 Code A—973 at $0.00filing
16 May 2024filed 20 May 2024RGEN Repligenoption or derivative · BiotechnologySEC FORM 4 Code A—1,376 at $0.00filing
16 May 2024filed 20 May 2024RGEN RepligenBiotechnologySEC FORM 4 Code A—701 at $0.00filing
18 May 2023filed 22 May 2023RGEN Repligenoption or derivative · BiotechnologySEC FORM 4 Code A—1,487 at $0.00filing
18 May 2023filed 22 May 2023RGEN RepligenBiotechnologySEC FORM 4 Code A—686 at $0.00filing
28 Mar 2023filed 30 Mar 2023Codiak BioSciencesSEC FORM 4 Sold$1,4867,432 at $0.20filing
28 Mar 2023filed 30 Mar 2023Codiak BioSciencesSEC FORM 4 Sold$3861,932 at $0.20filing
17 Feb 2023filed 21 Feb 2023Codiak BioSciencesSEC FORM 4 Sold$8211,391 at $0.59filing
16 Feb 2023filed 21 Feb 2023Codiak BioSciencesoption or derivativeSEC FORM 4 Code M—4,200 at $0.00filing
16 Feb 2023filed 21 Feb 2023Codiak BioSciencesSEC FORM 4 Code M—4,200filing
24 Jan 2023filed 26 Jan 2023Codiak BioSciencesoption or derivativeSEC FORM 4 Code A—145,000 at $0.00filing
20 Jan 2023filed 23 Jan 2023Codiak BioSciencesSEC FORM 4 Sold$6201,069 at $0.58filing
19 Jan 2023filed 23 Jan 2023Codiak BioSciencesoption or derivativeSEC FORM 4 Code M—2,800 at $0.00filing
19 Jan 2023filed 23 Jan 2023Codiak BioSciencesSEC FORM 4 Code M—2,800filing
16 Sep 2022filed 20 Sep 2022Codiak BioSciencesoption or derivativeSEC FORM 4 Code A—80,000 at $0.00filing

News

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

Sectors

Not placed5

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

Related people

Nobody else traded the same names lately.