rotation.to
Following this device: dark.
Free account
rotation.to
Sign in / Request free access
Appearance
Following this device: dark.
Drag a card by its title · ⚙ to size, swap or remove

Who

Casdin Partners Master Fund, L.P.

10% owner

Company insider

Files Form 4 as: 10% owner, BioLife Solutions; Director and 10% owner, GeneDx Holdings; Director and 10% owner, Standard BioTools; 10% owner, Verve Therapeutics; 10% owner, Decibel Therapeutics; 10% owner, Fulcrum Therapeutics.

Every Form 4 they filed

In numbers

Trades disclosed
44
Buys
23
Sells
3
Bought
$78.8M
Sold
$56.3M
Companies
6
Companies where not an officer
6
First trade
22 Jul 2019
Last trade
21 May 2026
Last filed
21 May 2026

Companies traded

Everywhere else they filed: board seats, 10% stakes, other companies
BioLife Solutions10% owner · Medical Devices · last 21 May 20268 buys · 3 sells
WGS GeneDx HoldingsDirector, 10% owner · Providers & Facilities · last 20 May 20265 buys · 0 sells
LAB Standard BioToolsDirector, 10% owner · Life-science tools · last 17 Nov 20257 buys · 0 sells
Verve Therapeutics10% owner · last 21 Jun 20211 buy · 0 sells
Decibel Therapeutics10% owner · last 17 Feb 20211 buy · 0 sells
FULC Fulcrum Therapeutics10% owner · Biotechnology · last 22 Jul 20191 buy · 0 sells

Activity over time

1 Nov 2024 – 1 Oct 2026
303Nov 24May 25Nov 25Apr 26Oct 26

Buys above the line, sells below, each month.

Every trade

TradedCompanyWhatAmount
21 May 2026filed 21 May 2026BioLife SolutionsMedical DevicesSEC FORM 4 Sold$15.4M650,000 at $23.70filing
21 May 2026filed 21 May 2026BioLife SolutionsMedical DevicesSEC FORM 4 Sold$15.4M650,000 at $23.70filing
20 May 2026filed 21 May 2026BioLife SolutionsMedical DevicesSEC FORM 4 Sold$5.9M250,000 at $23.70filing
20 May 2026filed 21 May 2026BioLife SolutionsMedical DevicesSEC FORM 4 Sold$5.9M250,000 at $23.70filing
20 May 2026filed 20 May 2026WGS GeneDx HoldingsProviders & FacilitiesSEC FORM 4 Bought$6.1M140,000 at $43.81filing
19 May 2026filed 21 May 2026BioLife SolutionsMedical DevicesSEC FORM 4 Sold$6.8M300,000 at $22.65filing
19 May 2026filed 21 May 2026BioLife SolutionsMedical DevicesSEC FORM 4 Sold$6.8M300,000 at $22.65filing
19 May 2026filed 20 May 2026WGS GeneDx HoldingsProviders & FacilitiesSEC FORM 4 Bought$7.9M185,000 at $42.60filing
18 May 2026filed 20 May 2026WGS GeneDx HoldingsProviders & FacilitiesSEC FORM 4 Bought$7.4M175,000 at $42.55filing
17 Nov 2025filed 17 Nov 2025LAB Standard BioToolsLife-science toolsSEC FORM 4 Bought$275K225,000 at $1.22filing
14 Nov 2025filed 17 Nov 2025LAB Standard BioToolsLife-science toolsSEC FORM 4 Bought$310K250,000 at $1.24filing
13 Nov 2025filed 17 Nov 2025LAB Standard BioToolsLife-science toolsSEC FORM 4 Bought$540K450,000 at $1.20filing
9 Sep 2025filed 11 Sep 2025LAB Standard BioToolsLife-science toolsSEC FORM 4 Bought$129K100,000 at $1.29filing
26 Aug 2025filed 26 Aug 2025LAB Standard BioToolsLife-science toolsSEC FORM 4 Bought$158K125,000 at $1.26filing
25 Aug 2025filed 26 Aug 2025LAB Standard BioToolsLife-science toolsSEC FORM 4 Bought$248K200,000 at $1.24filing
22 Aug 2025filed 26 Aug 2025LAB Standard BioToolsLife-science toolsSEC FORM 4 Bought$252K200,000 at $1.26filing
1 Aug 2024filed 5 Aug 2024WGS GeneDx HoldingsProviders & FacilitiesSEC FORM 4 Code J$13.3M413,655 at $32.25filing
30 Apr 2024filed 2 May 2024BioLife SolutionsMedical DevicesSEC FORM 4 Code J$2.6M150,000 at $17.54filing
30 Apr 2024filed 2 May 2024BioLife SolutionsMedical DevicesSEC FORM 4 Code J$2.6M150,000 at $17.54filing
5 Mar 2024filed 6 Mar 2024WGS GeneDx HoldingsProviders & FacilitiesSEC FORM 4 Bought$7,947900 at $8.83filing

News

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

Sectors

Health Care24
Not placed2

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

Related people

Aby J. MathewEVP & Chief Scientific Officer · EVP & Chief Scientific Officer at Biolife Solutions, filing Form 4 there in the last year
Sean WernerChief Technology Officer · Chief Technology Officer at Biolife Solutions, filing Form 4 there in the last year
Troy WichtermanChief Financial Officer · Chief Financial Officer at Biolife Solutions, filing Form 4 there in the last year
Roderick De GreefChief Executive Officer · Chief Executive Officer at Biolife Solutions, filing Form 4 there in the last year
Amy DuRossDirector · Director at Biolife Solutions, filing Form 4 there in the last year
Katherine StuelandChief Executive Officer · Also traded WGS in the last 90 days
Kevin FeeleyChief Financial Officer · Also traded WGS in the last 90 days