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Who

Leone D. Patterson

Director

Company insider

Files Form 4 as: Director, Nkarta; Director, Kalaris Therapeutics; EVP, Chief Bus & Fin Officer, Zymeworks; Chief Fin. and Bus. Officer, Tenaya Therapeutics; Director, Climb Bio; President and CFO, Adverum Biotechnologies; Chief Financial Officer, diaDexus; Vice President, CFO, Transcept Pharmaceuticals.

In numbers

Trades disclosed
64
Buys
0
Sells
9
Bought
$0
Sold
$2.2M
Companies
8
Companies where not an officer
3
First trade
25 Jun 2012
Last trade
10 Jun 2026
Last filed
11 Jun 2026

Companies traded

Where they are an officer
ZYME ZymeworksOfficer · Biotechnology · last 6 Jan 20260 buys · 0 sells
TNYA Tenaya TherapeuticsOfficer · Biotechnology · last 23 Feb 20240 buys · 2 sells
Adverum BiotechnologiesDirector, Officer · last 16 Feb 20210 buys · 7 sells
diaDexusOfficer · last 20 Mar 20150 buys · 0 sells
Transcept PharmaceuticalsOfficer · last 30 Oct 20140 buys · 0 sells
Everywhere else they filed: board seats, 10% stakes, other companies
NKTX NkartaDirector · Biotechnology · last 10 Jun 20260 buys · 0 sells
KLRS Kalaris TherapeuticsDirector · Biotechnology · last 3 Jun 20260 buys · 0 sells
CLYM Climb BioDirector · Biotechnology · last 19 May 20220 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
10 Jun 2026filed 11 Jun 2026NKTX Nkartaoption or derivative · BiotechnologySEC FORM 4 Code A—37,000 at $0.00filing
10 Jun 2026filed 11 Jun 2026NKTX Nkartaoption or derivative · BiotechnologySEC FORM 4 Code A—37,000 at $0.00filing
3 Jun 2026filed 4 Jun 2026KLRS Kalaris Therapeuticsoption or derivative · BiotechnologySEC FORM 4 Code A—9,000 at $0.00filing
3 Jun 2026filed 4 Jun 2026KLRS Kalaris Therapeuticsoption or derivative · BiotechnologySEC FORM 4 Code A—9,000 at $0.00filing
6 Jan 2026filed 7 Jan 2026ZYME ZymeworksBiotechnologySEC FORM 4 Code A$4,842459 at $10.55filing
6 Jan 2026filed 7 Jan 2026ZYME ZymeworksBiotechnologySEC FORM 4 Code A$4,842459 at $10.55filing
5 Jun 2025filed 9 Jun 2025NKTX Nkartaoption or derivative · BiotechnologySEC FORM 4 Code A—46,000 at $0.00filing
10 Apr 2025filed 11 Apr 2025KLRS Kalaris Therapeuticsoption or derivative · BiotechnologySEC FORM 4 Code A—18,000 at $0.00filing
10 Jan 2025filed 10 Jan 2025ZYME Zymeworksoption or derivative · BiotechnologySEC FORM 4 Code A—79,000 at $0.00filing
10 Jan 2025filed 10 Jan 2025ZYME Zymeworksoption or derivative · BiotechnologySEC FORM 4 Code A—53,000 at $0.00filing
1 Sep 2024filed 3 Sep 2024ZYME Zymeworksoption or derivative · BiotechnologySEC FORM 4 Code A—360,000 at $0.00filing
13 Jun 2024filed 14 Jun 2024NKTX Nkartaoption or derivative · BiotechnologySEC FORM 4 Code A—22,500 at $0.00filing
23 Feb 2024filed 27 Feb 2024TNYA Tenaya Therapeuticsoption or derivative · BiotechnologySEC FORM 4 Code A—205,000 at $0.00filing
23 Feb 2024filed 27 Feb 2024TNYA Tenaya TherapeuticsBiotechnologySEC FORM 4 Code A—35,000 at $0.00filing
16 Feb 2024filed 16 Feb 2024TNYA Tenaya TherapeuticsBiotechnologySEC FORM 4 Sold$30K5,201 at $5.86filing
16 Aug 2023filed 18 Aug 2023TNYA Tenaya TherapeuticsBiotechnologySEC FORM 4 Sold$17K4,452 at $3.81filing
7 Jun 2023filed 9 Jun 2023NKTX Nkartaoption or derivative · BiotechnologySEC FORM 4 Code A—22,500 at $0.00filing
15 Feb 2023filed 17 Feb 2023TNYA Tenaya Therapeuticsoption or derivative · BiotechnologySEC FORM 4 Code A—190,000 at $0.00filing
15 Feb 2023filed 17 Feb 2023TNYA Tenaya TherapeuticsBiotechnologySEC FORM 4 Code A—30,000 at $0.00filing
15 Feb 2023filed 17 Feb 2023TNYA Tenaya TherapeuticsBiotechnologySEC FORM 4 Code A—35,000 at $0.00filing

News

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

Sectors

Health Care2
Not placed7

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

Related people

Adam SchayowitzEVP, Head of R&D · EVP, Head of R&D at Zymeworks, filing Form 4 there in the last year
Whittemore TingleyChief Medical Officer · Chief Medical Officer at Tenaya Therapeutics, filing Form 4 there in the last year
Faraz AliChief Executive Officer · Chief Executive Officer at Tenaya Therapeutics, filing Form 4 there in the last year
Eric J. HyllengrenChief Financial Officer · Chief Financial Officer at Tenaya Therapeutics, filing Form 4 there in the last year
Mark HollywoodEVP & Chief Operating Officer · EVP & Chief Operating Officer at Zymeworks, filing Form 4 there in the last year