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Who

Keith Crandell

10% owner

Company insider

Files Form 4 as: 10% owner, Boundless Bio; Director and 10% owner, 908 Devices; Director and 10% owner, Twist Bioscience; Director and 10% owner, DA32 Life Science Tech Acquisition; Director and 10% owner, Quanterix; 10% owner, Vir Biotechnology; 10% owner, Codiak BioSciences; Director and 10% owner, Adesto Technologies.

Every Form 4 they filed

In numbers

Trades disclosed
244
Buys
8
Sells
3
Bought
$34.6M
Sold
$12.6M
Companies
12
Companies where not an officer
12
First trade
19 Oct 2006
Last trade
1 Jul 2026
Last filed
6 Jul 2026

Companies traded

Everywhere else they filed: board seats, 10% stakes, other companies
BOLD Boundless Bio10% owner · Biotechnology · last 1 Jul 20260 buys · 1 sell
MASS 908 DevicesDirector, 10% owner · Life-science tools · last 11 Jun 20261 buy · 0 sells
TWST Twist BioscienceDirector, 10% owner · Genomics & Gene Editing · last 5 Feb 20261 buy · 2 sells
DA32 Life Science Tech AcquisitionDirector, 10% owner · last 28 Jul 20231 buy · 0 sells
QTRX QuanterixDirector, 10% owner · Life-science tools · last 3 Apr 20231 buy · 0 sells
VIR Vir Biotechnology10% owner · Biotechnology · last 31 Aug 20220 buys · 0 sells
Codiak BioSciences10% owner · last 16 Oct 20201 buy · 0 sells
Adesto TechnologiesDirector, 10% owner · last 4 Jun 20191 buy · 0 sells
Xtera Communications10% owner · last 27 Sep 20161 buy · 0 sells
PULM Pulmatrix10% owner · Biotechnology · last 16 Jun 20151 buy · 0 sells
Kythera Biopharmaceuticals10% owner · last 16 Oct 20120 buys · 0 sells
Celebrate ExpressDirector, 10% owner · last 19 Oct 20070 buys · 0 sells

Activity over time

1 Nov 2024 – 1 Oct 2026
10Nov 24May 25Nov 25Apr 26Oct 26

Buys above the line, sells below, each month.

Every trade

TradedCompanyWhatAmount
1 Jul 2026filed 6 Jul 2026BOLD Boundless BioBiotechnologySEC FORM 4 Code M$16K16,000 at $1.03filing
1 Jul 2026filed 6 Jul 2026BOLD Boundless BioBiotechnologySEC FORM 4 Sold$40K16,000 at $2.49filing
1 Jul 2026filed 6 Jul 2026BOLD Boundless Biooption or derivative · BiotechnologySEC FORM 4 Code M—16,000 at $0.00filing
11 Jun 2026filed 12 Jun 2026MASS 908 Devicesoption or derivative · Life-science toolsSEC FORM 4 Code A—13,656 at $0.00filing
11 Jun 2026filed 12 Jun 2026MASS 908 Devicesoption or derivative · Life-science toolsSEC FORM 4 Code A—13,656 at $0.00filing
11 Jun 2026filed 12 Jun 2026MASS 908 Devicesoption or derivative · Life-science toolsSEC FORM 4 Code A—6,209 at $0.00filing
11 Jun 2026filed 12 Jun 2026MASS 908 Devicesoption or derivative · Life-science toolsSEC FORM 4 Code A—6,209 at $0.00filing
10 Jun 2026filed 12 Jun 2026MASS 908 DevicesLife-science toolsSEC FORM 4 Code M—14,083filing
10 Jun 2026filed 12 Jun 2026MASS 908 Devicesoption or derivative · Life-science toolsSEC FORM 4 Code M—14,083 at $0.00filing
10 Jun 2026filed 12 Jun 2026MASS 908 Devicesoption or derivative · Life-science toolsSEC FORM 4 Code M—14,083 at $0.00filing
10 Jun 2026filed 12 Jun 2026MASS 908 DevicesLife-science toolsSEC FORM 4 Code M—14,083filing
5 Feb 2026filed 9 Feb 2026TWST Twist BioscienceGenomics & Gene EditingSEC FORM 4 Code A—5,095 at $0.00filing
5 Feb 2026filed 9 Feb 2026TWST Twist BioscienceGenomics & Gene EditingSEC FORM 4 Code A—5,095 at $0.00filing
12 Jun 2025filed 13 Jun 2025MASS 908 Devicesoption or derivative · Life-science toolsSEC FORM 4 Code A—14,083 at $0.00filing
12 Jun 2025filed 13 Jun 2025MASS 908 Devicesoption or derivative · Life-science toolsSEC FORM 4 Code A—6,516 at $0.00filing
11 Jun 2025filed 13 Jun 2025MASS 908 Devicesoption or derivative · Life-science toolsSEC FORM 4 Code M—11,364 at $0.00filing
11 Jun 2025filed 13 Jun 2025MASS 908 DevicesLife-science toolsSEC FORM 4 Code M—11,364filing
5 Feb 2025filed 7 Feb 2025TWST Twist BioscienceGenomics & Gene EditingSEC FORM 4 Code A—4,472 at $0.00filing
13 Jun 2024filed 14 Jun 2024MASS 908 Devicesoption or derivative · Life-science toolsSEC FORM 4 Code A—11,364 at $0.00filing
13 Jun 2024filed 14 Jun 2024MASS 908 Devicesoption or derivative · Life-science toolsSEC FORM 4 Code A—15,996 at $0.00filing

News

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

Sectors

Health Care7
Not placed4

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

Related people

Adam LaponisChief Financial Officer · Chief Financial Officer at Twist Bioscience, filing Form 4 there in the last year
Christopher D. BrownDirector · Director at 908 Devices, filing Form 4 there in the last year
Joseph H. Griffith IVChief Financial Officer · Chief Financial Officer at 908 Devices, filing Form 4 there in the last year
Emily M. LeproustChief Executive Officer · Chief Executive Officer at Twist Bioscience, filing Form 4 there in the last year
Robert F. WernerChief Accounting Officer · Chief Accounting Officer at Twist Bioscience, filing Form 4 there in the last year
Dennis ChoOfficer · Also traded TWST in the last 90 days
Patrick John FinnPresident and COO · Also traded TWST in the last 90 days
Paula GreenSVP of Human Resources · Also traded TWST in the last 90 days