Insider · CIK 0001397266

Matthew K Fust

Files at: ETRA, CRNX, ATRA, MGNX, DERM, RARE. On EDGAR ↗

Period1M 3M 6M 1Y 2Y All datashares as filed — not split-adjusted

Open-market buys & salesbuys $0 · 0sales $1.2M · 4net −$1.2M

Reported trades — common stock

Trade	Reported (ET)	Company	Shares	Avg price	Total	Owned after	Δ stake	Flags
Sep 1, 2026 DForm 4 →	Sep 1, 5:01 pm EDT	Crinetics Pharmaceuticals, Inc.CRNX	28,761	$85.00	$2,444,685	0	—
Jun 18, 2026 AForm 4 →	Jun 22, 5:05 pm EDT	Crinetics Pharmaceuticals, Inc.CRNX	5,925	—	—	28,761	—
Jun 9, 2026 AForm 4 →	Jun 11, 4:36 pm EDT	Atara Biotherapeutics, Inc.ATRA	12,000	—	—	30,188	—
Feb 6, 2019 SForm 4 →	Feb 8, 5:41 pm EST	MACROGENICS INCMGNX	6,924	$29.38	$203,427	500	−93.3%	plan?
Feb 6, 2019 MForm 4 →	Feb 8, 5:41 pm EST	MACROGENICS INCMGNX	6,924	$20.15	$139,519	7,424	—	plan?
Oct 19, 2018 SForm 4 →	Oct 19, 4:24 pm EDT	Dermira, Inc.DERM	4,000	$13.75	$55,000	14,051	−22.2%	plan?
Jun 19, 2018 AForm 4 →	Jun 20, 6:07 pm EDT	Ultragenyx Pharmaceutical Inc.RARE	3,000	—	—	11,750	—	plan?
Jun 14, 2018 AForm 4 →	Jun 18, 4:24 pm EDT	Atara Biotherapeutics, Inc.ATRA	1,500	—	—	21,854	—	plan?
Jun 13, 2018 MForm 4 →	Jun 14, 5:45 pm EDT	Dermira, Inc.DERM	3,000	—	—	18,051	—	plan?
May 30, 2018 SForm 4 →	May 30, 7:26 pm EDT	Ultragenyx Pharmaceutical Inc.RARE	6,319	$72.00	$454,969	8,750	−41.9%	plan?
May 15, 2018 MForm 4 →	May 16, 8:40 pm EDT	Atara Biotherapeutics, Inc.ATRA	534	—	—	20,354	—	plan?
May 14, 2018 SForm 4 →	May 16, 8:40 pm EDT	Atara Biotherapeutics, Inc.ATRA	12,286	$43.57	$535,301	19,820	−38.3%	plan?
Feb 15, 2018 MForm 4 →	Feb 20, 8:25 pm EST	Atara Biotherapeutics, Inc.ATRA	1,603	—	—	32,106	—	plan?
Nov 15, 2017 MForm 4 →	Nov 17, 6:25 pm EST	Atara Biotherapeutics, Inc.ATRA	1,602	—	—	30,503	—	plan?
Aug 15, 2017 MForm 4 →	Aug 17, 5:41 pm EDT	Atara Biotherapeutics, Inc.ATRA	1,603	—	—	28,901	—	plan?
Jun 22, 2017 AForm 4 →	Jun 22, 7:24 pm EDT	Ultragenyx Pharmaceutical Inc.RARE	1,875	—	—	15,069	—	plan?
Jun 8, 2017 AForm 4 →	Jun 12, 5:26 pm EDT	Atara Biotherapeutics, Inc.ATRA	5,000	—	—	27,298	—	plan?
May 15, 2017 MForm 4 →	May 17, 5:00 pm EDT	Atara Biotherapeutics, Inc.ATRA	1,602	—	—	22,298	—	plan?
Feb 15, 2017 MForm 4 →	Feb 16, 8:10 pm EST	Atara Biotherapeutics, Inc.ATRA	1,603	—	—	20,696	—	plan?
Jan 3, 2017 AForm 4 →	Jan 5, 4:19 pm EST	Atara Biotherapeutics, Inc.ATRA	2,000	—	—	19,093	—	plan?
Nov 15, 2016 MForm 4 →	Nov 17, 4:30 pm EST	Atara Biotherapeutics, Inc.ATRA	1,602	—	—	17,093	—	plan?
Aug 15, 2016 MForm 4 →	Aug 17, 7:48 pm EDT	Atara Biotherapeutics, Inc.ATRA	1,603	—	—	15,491	—	plan?
Jun 9, 2016 AForm 4 →	Jun 14, 5:44 pm EDT	Ultragenyx Pharmaceutical Inc.RARE	1,875	—	—	13,194	—	plan? late
May 16, 2016 MForm 4 →	May 18, 7:04 pm EDT	Atara Biotherapeutics, Inc.ATRA	1,602	—	—	13,888	—	plan?
Feb 16, 2016 MForm 4 →	Feb 18, 8:16 pm EST	Atara Biotherapeutics, Inc.ATRA	1,603	—	—	12,286	—	plan?
Nov 16, 2015 MForm 4 →	Nov 18, 6:54 pm EST	Atara Biotherapeutics, Inc.ATRA	1,602	—	—	10,683	—	plan?
Aug 17, 2015 MForm 4 →	Aug 19, 8:24 pm EDT	Atara Biotherapeutics, Inc.ATRA	1,603	—	—	9,081	—	plan?
Jun 29, 2015 MForm 4 →	Jun 30, 4:09 pm EDT	Dermira, Inc.DERM	9,051	$5.51	$49,871	15,051	—	plan?
May 15, 2015 MForm 4 →	May 19, 6:59 pm EDT	Atara Biotherapeutics, Inc.ATRA	7,478	—	—	7,478	—	plan?
Mar 19, 2015 MForm 4 →	Mar 23, 4:16 pm EDT	Ultragenyx Pharmaceutical Inc.RARE	6,319	$21.00	$132,699	11,319	—	plan?

Reported trades — derivatives (options, RSUs, warrants)

Trade	Reported (ET)	Company	Shares	Avg price	Total	Owned after	Δ stake	Flags
Sep 1, 2026 DForm 4 →	Sep 1, 5:01 pm EDT	Crinetics Pharmaceuticals, Inc.CRNX	52,172	$54.29	$2,832,519	0	—
Jun 18, 2026 AForm 4 →	Jun 22, 5:05 pm EDT	Crinetics Pharmaceuticals, Inc.CRNX	9,730	—	—	9,730	—
Feb 6, 2019 MForm 4 →	Feb 8, 5:41 pm EST	MACROGENICS INCMGNX	6,924	—	—	0	—
Jun 19, 2018 AForm 4 →	Jun 20, 6:07 pm EDT	Ultragenyx Pharmaceutical Inc.RARE	5,000	—	—	5,000	—
Jun 14, 2018 AForm 4 →	Jun 18, 4:24 pm EDT	Atara Biotherapeutics, Inc.ATRA	5,000	—	—	5,000	—
Jun 12, 2018 AMForm 4 →	Jun 14, 5:45 pm EDT	Dermira, Inc.DERM	12,000	—	—	0	—
May 17, 2018 AForm 4 →	May 21, 4:52 pm EDT	MACROGENICS INCMGNX	10,000	—	—	10,000	—
May 15, 2018 MForm 4 →	May 16, 8:40 pm EDT	Atara Biotherapeutics, Inc.ATRA	534	—	—	0	—
Feb 15, 2018 MForm 4 →	Feb 20, 8:25 pm EST	Atara Biotherapeutics, Inc.ATRA	1,603	—	—	534	—
Nov 15, 2017 MForm 4 →	Nov 17, 6:25 pm EST	Atara Biotherapeutics, Inc.ATRA	1,602	—	—	2,137	—
Aug 15, 2017 MForm 4 →	Aug 17, 5:41 pm EDT	Atara Biotherapeutics, Inc.ATRA	1,603	—	—	3,739	—
Jun 22, 2017 AForm 4 →	Jun 22, 7:24 pm EDT	Ultragenyx Pharmaceutical Inc.RARE	3,750	—	—	3,750	—
Jun 13, 2017 AForm 4 →	Jun 15, 5:11 pm EDT	Dermira, Inc.DERM	9,000	—	—	3,000	—
Jun 8, 2017 AForm 4 →	Jun 12, 5:26 pm EDT	Atara Biotherapeutics, Inc.ATRA	21,500	—	—	21,500	—
May 18, 2017 AForm 4 →	May 22, 7:01 pm EDT	MACROGENICS INCMGNX	10,000	—	—	10,000	—
May 15, 2017 MForm 4 →	May 17, 5:00 pm EDT	Atara Biotherapeutics, Inc.ATRA	1,602	—	—	5,342	—
Feb 15, 2017 MForm 4 →	Feb 16, 8:10 pm EST	Atara Biotherapeutics, Inc.ATRA	1,603	—	—	6,944	—
Jan 3, 2017 AForm 4 →	Jan 5, 4:19 pm EST	Atara Biotherapeutics, Inc.ATRA	5,500	—	—	5,500	—
Nov 15, 2016 MForm 4 →	Nov 17, 4:30 pm EST	Atara Biotherapeutics, Inc.ATRA	1,602	—	—	8,547	—
Aug 15, 2016 MForm 4 →	Aug 17, 7:48 pm EDT	Atara Biotherapeutics, Inc.ATRA	1,603	—	—	10,149	—
Jun 21, 2016 AForm 4 →	Jun 23, 4:03 pm EDT	Dermira, Inc.DERM	10,344	—	—	10,344	—
Jun 9, 2016 AForm 4 →	Jun 14, 5:44 pm EDT	Ultragenyx Pharmaceutical Inc.RARE	3,750	—	—	3,750	—	late
May 18, 2016 AForm 4 →	May 20, 9:15 am EDT	MACROGENICS INCMGNX	8,500	—	—	8,500	—
May 16, 2016 MForm 4 →	May 18, 7:04 pm EDT	Atara Biotherapeutics, Inc.ATRA	1,602	—	—	11,752	—
Feb 16, 2016 MForm 4 →	Feb 18, 8:16 pm EST	Atara Biotherapeutics, Inc.ATRA	1,603	—	—	13,354	—
Jan 4, 2016 AForm 4 →	Jan 5, 5:35 pm EST	Atara Biotherapeutics, Inc.ATRA	10,500	—	—	10,500	—
Nov 16, 2015 MForm 4 →	Nov 18, 6:54 pm EST	Atara Biotherapeutics, Inc.ATRA	1,602	—	—	14,957	—
Aug 17, 2015 MForm 4 →	Aug 19, 8:24 pm EDT	Atara Biotherapeutics, Inc.ATRA	1,603	—	—	16,559	—
Jun 29, 2015 MForm 4 →	Jun 30, 4:09 pm EDT	Dermira, Inc.DERM	9,051	—	—	14,224	—
Jun 18, 2015 AForm 4 →	Jun 22, 4:01 pm EDT	Ultragenyx Pharmaceutical Inc.RARE	7,500	—	—	7,500	—
Jun 11, 2015 AForm 4 →	Jun 15, 4:11 pm EDT	Dermira, Inc.DERM	10,344	—	—	10,344	—
May 20, 2015 AForm 4 →	May 21, 2:30 pm EDT	MACROGENICS INCMGNX	8,500	—	—	8,500	—
May 15, 2015 MForm 4 →	May 19, 6:59 pm EDT	Atara Biotherapeutics, Inc.ATRA	7,478	—	—	18,162	—
Mar 19, 2015 MForm 4 →	Mar 23, 4:16 pm EDT	Ultragenyx Pharmaceutical Inc.RARE	6,319	—	—	11,181	—
Jan 16, 2015 AForm 4 →	Jan 21, 4:36 pm EST	Atara Biotherapeutics, Inc.ATRA	12,500	—	—	12,500	—