Stocks
STRO SUTRO BIOPHARMA, INC.

STRO

SUTRO BIOPHARMA, INC.

Company with tickers: STRO

CIK

1382101

CUSIP

869367201

Shares Outstanding

16,570,439

Price History Institutional Holders Short Volume Short Interest Fails to Deliver SEC Filings Earnings Calls Insider Trades Congressional Trades

Date	Insider	Role	Type	Shares	Price	Value	After
2026-03-04	Chung Jane	Director, Chief Executive Officer	Tax	282	$21.31	$6,009	21,285
2026-03-04	Chung Jane	Director, Chief Executive Officer	Convert	788	—	—	0
2026-03-04	Chung Jane	Director, Chief Executive Officer	Convert	788	—	—	21,567
2026-03-04	Pauling David	Chief Admin. Ofcr. & GC	Tax	277	$21.31	$5,903	9,748
2026-03-04	Pauling David	Chief Admin. Ofcr. & GC	Convert	675	—	—	0
2026-03-04	Pauling David	Chief Admin. Ofcr. & GC	Convert	675	—	—	10,025
2026-03-02	Chow Gregory K.	Executive VP & CFO	Award	40,000	—	—	40,000
2026-03-02	Chow Gregory K.	Executive VP & CFO	Award	5,000	—	—	5,000
2026-03-02	Chung Jane	Director, Chief Executive Officer	Convert	7,750	—	—	23,558
2026-03-02	Chung Jane	Director, Chief Executive Officer	Convert	7,750	—	—	23,250
2026-03-02	Chung Jane	Director, Chief Executive Officer	Award	40,000	—	—	40,000
2026-03-02	Chung Jane	Director, Chief Executive Officer	Award	175,000	—	—	175,000
2026-03-02	Chung Jane	Director, Chief Executive Officer	Tax	2,779	$20.55	$57,108	20,779
2026-03-02	Pauling David	Chief Admin. Ofcr. & GC	Convert	2,356	—	—	10,320
2026-03-02	Pauling David	Chief Admin. Ofcr. & GC	Convert	2,356	—	—	7,069
2026-03-02	Pauling David	Chief Admin. Ofcr. & GC	Tax	970	$20.55	$19,934	9,350
2026-03-02	Pauling David	Chief Admin. Ofcr. & GC	Award	4,200	—	—	4,200
2026-03-02	Pauling David	Chief Admin. Ofcr. & GC	Award	33,600	—	—	33,600
2026-03-02	Gerber Hans-Peter	CHIEF SCIENTIFIC OFFICER	Convert	2,843	—	—	8,532
2026-03-02	Gerber Hans-Peter	CHIEF SCIENTIFIC OFFICER	Award	40,000	—	—	40,000
2026-03-02	Gerber Hans-Peter	CHIEF SCIENTIFIC OFFICER	Tax	1,170	$20.55	$24,044	9,518
2026-03-02	Gerber Hans-Peter	CHIEF SCIENTIFIC OFFICER	Award	5,000	—	—	5,000
2026-03-02	Gerber Hans-Peter	CHIEF SCIENTIFIC OFFICER	Convert	2,843	—	—	10,688
2026-03-01	Chung Jane	Director, Chief Executive Officer	Convert	2,500	—	—	5,000
2026-03-01	Chung Jane	Director, Chief Executive Officer	Convert	688	—	—	688
2026-03-01	Chung Jane	Director, Chief Executive Officer	Convert	2,500	—	—	17,079
2026-03-01	Chung Jane	Director, Chief Executive Officer	Convert	688	—	—	14,579
2026-03-01	Chung Jane	Director, Chief Executive Officer	Tax	1,271	$20.47	$26,017	15,808
2026-03-01	Pauling David	Chief Admin. Ofcr. & GC	Convert	842	—	—	8,515
2026-03-01	Pauling David	Chief Admin. Ofcr. & GC	Convert	500	—	—	7,673
2026-03-01	Pauling David	Chief Admin. Ofcr. & GC	Convert	842	—	—	1,686
2026-03-01	Pauling David	Chief Admin. Ofcr. & GC	Tax	551	$20.47	$11,279	7,964
2026-03-01	Pauling David	Chief Admin. Ofcr. & GC	Convert	500	—	—	500
2026-03-01	Gerber Hans-Peter	CHIEF SCIENTIFIC OFFICER	Tax	463	$20.47	$9,478	7,845
2026-03-01	Gerber Hans-Peter	CHIEF SCIENTIFIC OFFICER	Convert	1,125	—	—	2,250
2026-03-01	Gerber Hans-Peter	CHIEF SCIENTIFIC OFFICER	Convert	1,125	—	—	8,308
2025-12-23	Wigginton Jon Marc	Chief Medical Officer	Award	1,500	—	—	1,500
2025-12-23	Petree Daniel H	Director	Award	1,500	—	—	1,500
2025-12-23	PANEK JAMES P	Director	Award	1,500	—	—	1,500
2025-12-23	MATSUI CONNIE	Director	Award	1,500	—	—	1,500
2025-12-23	Lobacki Joseph M	Director	Award	1,500	—	—	1,500
2025-12-23	Dybbs Michael	Director	Award	1,500	—	—	1,500
2025-12-23	Jagpal Sukhi	Director	Award	1,500	—	—	1,500
2025-12-23	Hunter Heidi	Director	Award	1,500	—	—	1,500
2025-12-23	Pauling David	Chief Admin. Ofcr. & GC	Award	7,200	—	—	7,200
2025-12-23	Gerber Hans-Peter	CHIEF SCIENTIFIC OFFICER	Award	7,925	—	—	7,925
2025-12-23	Chow Gregory K.	Executive VP & CFO	Award	8,200	—	—	8,200
2025-12-12	Chung Jane	Director, Chief Executive Officer	Convert	2,500	—	—	14,785
2025-12-12	Chung Jane	Director, Chief Executive Officer	Convert	2,500	—	—	5,000
2025-12-12	Chung Jane	Director, Chief Executive Officer	Tax	894	$8.02	$7,165	13,891
2025-10-15	Chow Gregory K.	Executive VP & CFO	Buy	19,750	$0.81	$15,998	19,750
2025-10-15	Chung Jane	Director, Chief Executive Officer	Buy	12,500	$0.80	$10,011	122,850
2025-10-15	MATSUI CONNIE	Director	Buy	50,000	$0.80	$39,950	50,000
2025-10-15	Pauling David	Chief Admin. Ofcr. & GC	Buy	12,504	$0.80	$9,993	71,737
2025-10-15	Gerber Hans-Peter	CHIEF SCIENTIFIC OFFICER	Buy	17,000	$0.80	$13,607	71,832
2025-09-18	Gerber Hans-Peter	CHIEF SCIENTIFIC OFFICER	Tax	13,417	$0.90	$12,075	54,832
2025-09-18	Gerber Hans-Peter	CHIEF SCIENTIFIC OFFICER	Convert	37,500	—	—	75,000
2025-09-18	Gerber Hans-Peter	CHIEF SCIENTIFIC OFFICER	Convert	37,500	—	—	68,249
2025-08-09	Chung Jane	Director, Chief Executive Officer	Convert	18,750	—	—	117,058
2025-08-09	Chung Jane	Director, Chief Executive Officer	Tax	6,708	$0.80	$5,366	110,350
2025-08-09	Chung Jane	Director, Chief Executive Officer	Convert	18,750	—	—	0
2025-07-08	Leyman Barbara	Chief Business Officer	Convert	25,000	—	—	25,000
2025-07-08	Leyman Barbara	Chief Business Officer	Tax	8,944	$0.78	$6,976	16,056
2025-07-08	Leyman Barbara	Chief Business Officer	Convert	25,000	—	—	75,000
2025-06-06	Wigginton Jon Marc	Chief Medical Officer	Award	50,000	—	—	50,000
2025-06-06	Petree Daniel H	Director	Award	50,000	—	—	50,000
2025-06-06	PANEK JAMES P	Director	Award	50,000	—	—	50,000
2025-06-06	Lobacki Joseph M	Director	Award	50,000	—	—	50,000
2025-06-06	Jagpal Sukhi	Director	Award	50,000	—	—	50,000
2025-06-06	Hunter Heidi	Director	Award	50,000	—	—	50,000
2025-06-06	Dybbs Michael	Director	Award	50,000	—	—	50,000
2025-06-06	MATSUI CONNIE	Director	Award	50,000	—	—	50,000
2025-06-02	Chow Gregory K.	Executive VP & CFO	Award	100,000	—	—	100,000
2025-06-02	Chow Gregory K.	Executive VP & CFO	Award	275,000	—	—	275,000
2025-06-02	Chow Gregory K.	Executive VP & CFO	Other	0	—	—	0
2025-05-15	ALBINI EDWARD C	CFO AND SECRETARY	Convert	11,156	—	—	4,594
2025-05-15	ALBINI EDWARD C	CFO AND SECRETARY	Convert	9,125	—	—	0
2025-05-15	ALBINI EDWARD C	CFO AND SECRETARY	Tax	15,995	$0.88	$14,076	160,805
2025-05-15	ALBINI EDWARD C	CFO AND SECRETARY	Convert	9,125	—	—	176,800
2025-05-15	ALBINI EDWARD C	CFO AND SECRETARY	Convert	24,438	—	—	27,312
2025-05-15	ALBINI EDWARD C	CFO AND SECRETARY	Convert	11,156	—	—	167,675
2025-05-15	ALBINI EDWARD C	CFO AND SECRETARY	Convert	24,438	—	—	156,519
2025-05-01	FITZPATRICK LINDA A	CHIEF PEOPLE & COMM. OFFICER	Convert	13,140	—	—	127,438
2025-05-01	FITZPATRICK LINDA A	CHIEF PEOPLE & COMM. OFFICER	Convert	13,140	—	—	14,685
2025-05-01	FITZPATRICK LINDA A	CHIEF PEOPLE & COMM. OFFICER	Tax	13,538	$1.07	$14,486	119,744
2025-05-01	FITZPATRICK LINDA A	CHIEF PEOPLE & COMM. OFFICER	Convert	9,740	—	—	4,010
2025-05-01	FITZPATRICK LINDA A	CHIEF PEOPLE & COMM. OFFICER	Other	10,383	—	—	10,383
2025-05-01	FITZPATRICK LINDA A	CHIEF PEOPLE & COMM. OFFICER	Convert	9,740	—	—	114,298
2025-05-01	FITZPATRICK LINDA A	CHIEF PEOPLE & COMM. OFFICER	Convert	5,844	—	—	6,531
2025-05-01	FITZPATRICK LINDA A	CHIEF PEOPLE & COMM. OFFICER	Convert	5,844	—	—	133,282
2025-05-01	FITZPATRICK LINDA A	CHIEF PEOPLE & COMM. OFFICER	Convert	9,125	—	—	104,558
2025-05-01	Srinivasan Venkatesh	CHIEF TECH OP OFFICER	Convert	2,500	—	—	5,000
2025-05-01	Srinivasan Venkatesh	CHIEF TECH OP OFFICER	Convert	2,500	—	—	54,580
2025-05-01	Srinivasan Venkatesh	CHIEF TECH OP OFFICER	Tax	894	$1.07	$957	53,686
2025-05-01	Borgman Anne Elizabeth	Director	Convert	53,125	—	—	106,223
2025-05-01	Borgman Anne Elizabeth	Director	Convert	53,125	—	—	21,875
2025-05-01	Borgman Anne Elizabeth	Director	Convert	15,938	—	—	122,161
2025-05-01	Borgman Anne Elizabeth	Director	Tax	24,709	$1.07	$26,439	97,452
2025-05-01	Borgman Anne Elizabeth	Director	Convert	15,938	—	—	17,812
2025-05-01	FITZPATRICK LINDA A	CHIEF PEOPLE & COMM. OFFICER	Convert	9,125	—	—	0