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Who

Donald A. Bergstrom

President, R&D

Company insider

Files Form 4 as: President, R&D, Relay Therapeutics; Director, Fusion Pharmaceuticals; Chief Medical Officer, Mersana Therapeutics.

In numbers

Trades disclosed
129
Buys
0
Sells
61
Bought
$0
Sold
$14.3M
Companies
3
Companies where not an officer
1
First trade
2 Feb 2018
Last trade
8 Sep 2026
Last filed
9 Sep 2026

Companies traded

Where they are an officer
RLAY Relay TherapeuticsOfficer · Biotechnology · last 8 Sep 20260 buys · 61 sells
Mersana TherapeuticsOfficer · last 2 Feb 20180 buys · 0 sells
Everywhere else they filed: board seats, 10% stakes, other companies
Fusion PharmaceuticalsDirector · last 4 Jun 20240 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
8 Sep 2026filed 9 Sep 2026RLAY Relay TherapeuticsBiotechnologySEC FORM 4 Sold$162K8,530 at $18.97filing
8 Sep 2026filed 9 Sep 2026RLAY Relay TherapeuticsBiotechnologySEC FORM 4 Sold$162K8,530 at $18.97filing
28 Jul 2026filed 30 Jul 2026RLAY Relay TherapeuticsBiotechnologySEC FORM 4 Sold$42K2,237 at $18.61filing
28 Jul 2026filed 30 Jul 2026RLAY Relay TherapeuticsBiotechnologySEC FORM 4 Sold$42K2,237 at $18.61filing
6 Jul 2026filed 8 Jul 2026RLAY Relay TherapeuticsBiotechnologySEC FORM 4 Sold$162K8,660 at $18.71filing
6 Jul 2026filed 8 Jul 2026RLAY Relay TherapeuticsBiotechnologySEC FORM 4 Sold$162K8,660 at $18.71filing
22 Jun 2026filed 24 Jun 2026RLAY Relay TherapeuticsBiotechnologySEC FORM 4 Code M$385K93,456 at $4.12filing
22 Jun 2026filed 24 Jun 2026RLAY Relay TherapeuticsBiotechnologySEC FORM 4 Sold$1.6M93,456 at $16.94filing
22 Jun 2026filed 24 Jun 2026RLAY Relay Therapeuticsoption or derivative · BiotechnologySEC FORM 4 Code M—93,456 at $0.00filing
22 Jun 2026filed 24 Jun 2026RLAY Relay Therapeuticsoption or derivative · BiotechnologySEC FORM 4 Code M—93,456 at $0.00filing
22 Jun 2026filed 24 Jun 2026RLAY Relay TherapeuticsBiotechnologySEC FORM 4 Code M$385K93,456 at $4.12filing
22 Jun 2026filed 24 Jun 2026RLAY Relay TherapeuticsBiotechnologySEC FORM 4 Sold$1.6M93,456 at $16.94filing
28 Apr 2026filed 30 Apr 2026RLAY Relay TherapeuticsBiotechnologySEC FORM 4 Sold$22K1,490 at $14.79filing
28 Apr 2026filed 30 Apr 2026RLAY Relay TherapeuticsBiotechnologySEC FORM 4 Sold$22K1,490 at $14.79filing
28 Jan 2026filed 29 Jan 2026RLAY Relay TherapeuticsBiotechnologySEC FORM 4 Sold$23K2,686 at $8.45filing
28 Jan 2026filed 29 Jan 2026RLAY Relay TherapeuticsBiotechnologySEC FORM 4 Sold$23K2,686 at $8.45filing
27 Jan 2026filed 29 Jan 2026RLAY Relay TherapeuticsBiotechnologySEC FORM 4 Sold$144K18,895 at $7.62filing
27 Jan 2026filed 29 Jan 2026RLAY Relay TherapeuticsBiotechnologySEC FORM 4 Sold$144K18,895 at $7.62filing
13 Jan 2026filed 15 Jan 2026RLAY Relay Therapeuticsoption or derivative · BiotechnologySEC FORM 4 Code A—575,000 at $0.00filing
13 Jan 2026filed 15 Jan 2026RLAY Relay Therapeuticsoption or derivative · BiotechnologySEC FORM 4 Code A—575,000 at $0.00filing

News

Head-To-Head Comparison: Krystal Biotech (NASDAQ:KRYS) and Relay Therapeutics (NASDAQ:RLAY)RLAY · tickerreport.com · 11 Oct 2026

0 headlines in the last 90 days name Donald A. Bergstrom; 1 article from the last 14 days about the 1 company they traded most, at most three about any one of them.

Sectors

Health Care61

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

Related people

Sanjiv PatelPresident and CEO · President and CEO at Relay Therapeutics, filing Form 4 there in the last year
Thomas CatinazzoChief Financial Officer · Chief Financial Officer at Relay Therapeutics, filing Form 4 there in the last year
Peter RahmerOfficer · Insider at Relay Therapeutics, filing Form 4 there in the last year
SVF Pauling (Cayman) Ltd10% owner · 10% owner at Relay Therapeutics, filing Form 4 there in the last year
Claire MazumdarChief Executive Officer · Director at Relay Therapeutics, filing Form 4 there in the last year