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Who

Mona Ashiya

Director

Company insider

Files Form 4 as: Director, Yarrow Bioscience; Director, Shattuck Labs; Director and 10% owner, Disc Medicine; Director and 10% owner, Sierra Oncology.

In numbers

Trades disclosed
94
Buys
3
Sells
12
Bought
$11.0M
Sold
$52.7M
Companies
4
Companies where not an officer
4
First trade
29 Nov 2019
Last trade
27 Jul 2026
Last filed
29 Jul 2026

Companies traded

Everywhere else they filed: board seats, 10% stakes, other companies
YARW Yarrow BioscienceDirector · Biotechnology · last 27 Jul 20260 buys · 0 sells
STTK Shattuck LabsDirector · Biotechnology · last 11 Jun 20261 buy · 0 sells
IRON Disc MedicineDirector, 10% owner · Biotechnology · last 11 Jun 20252 buys · 12 sells
Sierra OncologyDirector, 10% owner · last 1 Jul 20220 buys · 0 sells

Activity over time

1 Nov 2024 – 1 Oct 2026
70Nov 24May 25Nov 25Apr 26Oct 26

Buys above the line, sells below, each month.

Every trade

TradedCompanyWhatAmount
27 Jul 2026filed 29 Jul 2026YARW Yarrow Bioscienceoption or derivative · BiotechnologySEC FORM 4 Code A—15,435 at $0.00filing
27 Jul 2026filed 29 Jul 2026YARW Yarrow Bioscienceoption or derivative · BiotechnologySEC FORM 4 Code A—15,435 at $0.00filing
11 Jun 2026filed 15 Jun 2026STTK Shattuck Labsoption or derivative · BiotechnologySEC FORM 4 Code P—1,041,667filing
11 Jun 2026filed 15 Jun 2026STTK Shattuck Labsoption or derivative · BiotechnologySEC FORM 4 Code P—208,333filing
11 Jun 2026filed 15 Jun 2026STTK Shattuck Labsoption or derivative · BiotechnologySEC FORM 4 Code P—1,041,667filing
11 Jun 2026filed 15 Jun 2026STTK Shattuck Labsoption or derivative · BiotechnologySEC FORM 4 Code P—208,333filing
8 Jun 2026filed 9 Jun 2026STTK Shattuck Labsoption or derivative · BiotechnologySEC FORM 4 Code C—15,366,490filing
8 Jun 2026filed 9 Jun 2026STTK Shattuck Labsoption or derivative · BiotechnologySEC FORM 4 Code C—3,073,298filing
8 Jun 2026filed 9 Jun 2026STTK Shattuck Labsoption or derivative · BiotechnologySEC FORM 4 Code C—15,366,490filing
8 Jun 2026filed 9 Jun 2026STTK Shattuck Labsoption or derivative · BiotechnologySEC FORM 4 Code C—15,366,490filing
8 Jun 2026filed 9 Jun 2026STTK Shattuck Labsoption or derivative · BiotechnologySEC FORM 4 Code C—3,073,298filing
8 Jun 2026filed 9 Jun 2026STTK Shattuck Labsoption or derivative · BiotechnologySEC FORM 4 Code C—15,366,490filing
8 Jun 2026filed 9 Jun 2026STTK Shattuck Labsoption or derivative · BiotechnologySEC FORM 4 Code C—3,073,298filing
8 Jun 2026filed 9 Jun 2026STTK Shattuck Labsoption or derivative · BiotechnologySEC FORM 4 Code C—3,073,298filing
29 May 2026filed 2 Jun 2026STTK Shattuck Labsoption or derivative · BiotechnologySEC FORM 4 Code A—81,000 at $0.00filing
29 May 2026filed 2 Jun 2026STTK Shattuck Labsoption or derivative · BiotechnologySEC FORM 4 Code A—81,000 at $0.00filing
28 Aug 2025filed 2 Sep 2025STTK Shattuck Labsoption or derivative · BiotechnologySEC FORM 4 Code A—66,300 at $0.00filing
25 Aug 2025filed 2 Sep 2025STTK Shattuck Labsoption or derivative · BiotechnologySEC FORM 4 Code P—10,111,384filing
25 Aug 2025filed 2 Sep 2025STTK Shattuck Labsoption or derivative · BiotechnologySEC FORM 4 Code P—2,022,277filing
25 Aug 2025filed 2 Sep 2025STTK Shattuck Labsoption or derivative · BiotechnologySEC FORM 4 Code P—15,366,490filing

Sectors

Health Care15

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

Related people

RTW Fund Group GP, LLC10% owner · 10% owner at Yarrow Bioscience, filing Form 4 there in the last year
Roderick WongDirector and 10% owner · 10% owner at Yarrow Bioscience, filing Form 4 there in the last year
Tyler ZerondaDirector · Director at Yarrow Bioscience, filing Form 4 there in the last year
Mutya HarschChief Legal Officer and Gc · Chief Legal Officer and Gc at VYNE Therapeutics, filing Form 4 there in the last year
Iain StuartChief Scientific Officer · Chief Scientific Officer at VYNE Therapeutics, filing Form 4 there in the last year
Kevin BittermanDirector · Also traded IRON in the last 90 days
Jonathan Yen-Wen YuChief Operating Officer · Also traded IRON in the last 90 days
John D. QuiselDirector · Also traded IRON in the last 90 days