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Who

Laurie Stelzer

Director

Company insider

Files Form 4 as: Director, Sionna Therapeutics; Director, MBX Biosciences; Director, PMV Pharmaceuticals; Director, Spyre Therapeutics; Chief Financial Officer, Mirati Therapeutics; Director, Surface Oncology; EVP & Chief Financial Officer, Arena Pharmaceuticals; SVP, Chief Financial Officer, Halozyme Therapeutics.

In numbers

Trades disclosed
99
Buys
2
Sells
1
Bought
$345K
Sold
$172K
Companies
8
Companies where not an officer
5
First trade
15 Jun 2015
Last trade
17 Jun 2026
Last filed
18 Jun 2026

Companies traded

Where they are an officer
Mirati TherapeuticsOfficer · last 9 Aug 20230 buys · 1 sell
Arena PharmaceuticalsOfficer · last 11 Mar 20220 buys · 0 sells
HALO Halozyme TherapeuticsOfficer · Biotechnology · last 22 Feb 20202 buys · 0 sells
Everywhere else they filed: board seats, 10% stakes, other companies
SION Sionna TherapeuticsDirector · Biotechnology · last 17 Jun 20260 buys · 0 sells
MBX MBX BiosciencesDirector · Biotechnology · last 4 Jun 20260 buys · 0 sells
PMVP PMV PharmaceuticalsDirector · Biotechnology · last 4 Jun 20260 buys · 0 sells
SYRE Spyre TherapeuticsDirector · Biotechnology · last 27 May 20260 buys · 0 sells
Surface OncologyDirector · last 8 Jun 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
17 Jun 2026filed 18 Jun 2026SION Sionna Therapeuticsoption or derivative · BiotechnologySEC FORM 4 Code A—17,340 at $0.00filing
17 Jun 2026filed 18 Jun 2026SION Sionna Therapeuticsoption or derivative · BiotechnologySEC FORM 4 Code A—17,340 at $0.00filing
4 Jun 2026filed 5 Jun 2026MBX MBX Biosciencesoption or derivative · BiotechnologySEC FORM 4 Code A—12,500 at $0.00filing
4 Jun 2026filed 5 Jun 2026MBX MBX Biosciencesoption or derivative · BiotechnologySEC FORM 4 Code A—12,500 at $0.00filing
4 Jun 2026filed 5 Jun 2026PMVP PMV Pharmaceuticalsoption or derivative · BiotechnologySEC FORM 4 Code A—42,000 at $0.00filing
4 Jun 2026filed 5 Jun 2026PMVP PMV Pharmaceuticalsoption or derivative · BiotechnologySEC FORM 4 Code A—42,000 at $0.00filing
27 May 2026filed 29 May 2026SYRE Spyre Therapeuticsoption or derivative · BiotechnologySEC FORM 4 Code A—8,026 at $0.00filing
27 May 2026filed 29 May 2026SYRE Spyre Therapeuticsoption or derivative · BiotechnologySEC FORM 4 Code A—8,026 at $0.00filing
20 Jan 2026filed 22 Jan 2026MBX MBX Biosciencesoption or derivative · BiotechnologySEC FORM 4 Code A—32,000 at $0.00filing
20 Jan 2026filed 22 Jan 2026MBX MBX Biosciencesoption or derivative · BiotechnologySEC FORM 4 Code A—32,000 at $0.00filing
12 Jun 2025filed 16 Jun 2025SION Sionna Therapeuticsoption or derivative · BiotechnologySEC FORM 4 Code A—19,959 at $0.00filing
5 Jun 2025filed 9 Jun 2025PMVP PMV Pharmaceuticalsoption or derivative · BiotechnologySEC FORM 4 Code A—33,500 at $0.00filing
29 May 2025filed 2 Jun 2025SYRE Spyre Therapeuticsoption or derivative · BiotechnologySEC FORM 4 Code A—25,000 at $0.00filing
6 Jun 2024filed 10 Jun 2024PMVP PMV Pharmaceuticalsoption or derivative · BiotechnologySEC FORM 4 Code A—67,500 at $0.00filing
14 May 2024filed 16 May 2024SYRE Spyre Therapeuticsoption or derivative · BiotechnologySEC FORM 4 Code A—11,323 at $0.00filing
22 Nov 2023filed 27 Nov 2023SYRE Spyre Therapeuticsoption or derivative · BiotechnologySEC FORM 4 Code A—50,000 at $0.00filing
9 Aug 2023filed 10 Aug 2023Mirati TherapeuticsSEC FORM 4 Code A$825K22,297 at $37.00filing
8 Jun 2023filed 12 Jun 2023PMVP PMV Pharmaceuticalsoption or derivative · BiotechnologySEC FORM 4 Code A—21,500 at $0.00filing
2 Jun 2023filed 2 Jun 2023Mirati TherapeuticsSEC FORM 4 Sold$172K4,647 at $37.06filing
20 Jan 2023filed 24 Jan 2023Mirati Therapeuticsoption or derivativeSEC FORM 4 Code A—45,456 at $0.00filing

News

Sectors

Health Care2
Not placed1

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

Related people

Bernadette ConnaughtonDirector · Director at Halozyme Therapeutics, filing Form 4 there in the last year
Helen TorleyPresident and CEO · President and CEO at Halozyme Therapeutics, filing Form 4 there in the last year
James M. DalyDirector · Director at Halozyme Therapeutics, filing Form 4 there in the last year
Matthew L. PosardDirector · Director at Halozyme Therapeutics, filing Form 4 there in the last year
Dannielle AppelhansDirector · Director at Halozyme Therapeutics, filing Form 4 there in the last year
Gilbert Ray Cisneros, Jr.Representative, CA-31 · Also traded HALO in the last 90 days