Insider · CIK 0001428666

Yonehiro Grant

Reports to the SEC for 2 companies · REDWOOD CITY, CA

sec.gov

Transactions

Companies

Filings

CIK

0001428666

Forms 4 and 5

Insider transactions

47 trades

Date	Company	Role	Code	Shares	Price	Value	Shares after
2026-09-18	BOLTBolt Biotherapeutics, Inc.S Sale	Chief Operating Officer	SSale	−6,850 sh	$3.24	−$22.2K	17,269
2026-09-17	BOLTBolt Biotherapeutics, Inc.S Sale	Chief Operating Officer	SSale	−4,909 sh	$3.32	−$16.3K	24,119
2026-09-16	BOLTBolt Biotherapeutics, Inc.S Sale	Chief Operating Officer	SSale	−1,417 sh	$3.77	−$5,347.758	29,028
2026-01-28	BOLTBolt Biotherapeutics, Inc. · Employee Stock Option (Right to Buy)A Award	Chief Operating Officer	AAward	+10K sh	—	—	10,000
2025-12-12	BOLTBolt Biotherapeutics, Inc. · Employee Stock Option (Right to Buy)A Award	Chief Operating Officer	AAward	+3,214 sh	—	—	3,214
2025-12-12	BOLTBolt Biotherapeutics, Inc. · Employee Stock Option (Right to Buy)D Disposition to Issuer	Chief Operating Officer	DDisposition to Issuer	−3,214 sh	—	—	0
2025-12-12	BOLTBolt Biotherapeutics, Inc. · Employee Stock Option (Right to Buy)A Award	Chief Operating Officer	AAward	+660 sh	—	—	660
2025-12-12	BOLTBolt Biotherapeutics, Inc. · Employee Stock Option (Right to Buy)D Disposition to Issuer	Chief Operating Officer	DDisposition to Issuer	−660 sh	—	—	0
2025-12-12	BOLTBolt Biotherapeutics, Inc. · Employee Stock Option (Right to Buy)A Award	Chief Operating Officer	AAward	+822 sh	—	—	822
2025-12-12	BOLTBolt Biotherapeutics, Inc. · Employee Stock Option (Right to Buy)D Disposition to Issuer	Chief Operating Officer	DDisposition to Issuer	−822 sh	—	—	0
2025-12-12	BOLTBolt Biotherapeutics, Inc. · Employee Stock Option (Right to Buy)A Award	Chief Operating Officer	AAward	+1,653 sh	—	—	1,653
2025-12-12	BOLTBolt Biotherapeutics, Inc. · Employee Stock Option (Right to Buy)D Disposition to Issuer	Chief Operating Officer	DDisposition to Issuer	−1,653 sh	—	—	0
2025-12-12	BOLTBolt Biotherapeutics, Inc. · Employee Stock Option (Right to Buy)A Award	Chief Operating Officer	AAward	+4,642 sh	—	—	4,642
2025-12-12	BOLTBolt Biotherapeutics, Inc. · Employee Stock Option (Right to Buy)D Disposition to Issuer	Chief Operating Officer	DDisposition to Issuer	−4,642 sh	—	—	0
2025-12-12	BOLTBolt Biotherapeutics, Inc. · Employee Stock Option (Right to Buy)A Award	Chief Operating Officer	AAward	+2,142 sh	—	—	2,142
2025-12-12	BOLTBolt Biotherapeutics, Inc. · Employee Stock Option (Right to Buy)D Disposition to Issuer	Chief Operating Officer	DDisposition to Issuer	−2,142 sh	—	—	0
2025-12-12	BOLTBolt Biotherapeutics, Inc. · Employee Stock Option (Right to Buy)A Award	Chief Operating Officer	AAward	+4,999 sh	—	—	4,999
2025-12-12	BOLTBolt Biotherapeutics, Inc. · Employee Stock Option (Right to Buy)D Disposition to Issuer	Chief Operating Officer	DDisposition to Issuer	−4,999 sh	—	—	0
2025-12-12	BOLTBolt Biotherapeutics, Inc. · Employee Stock Option (Right to Buy)A Award	Chief Operating Officer	AAward	+9,499 sh	—	—	9,499
2025-12-12	BOLTBolt Biotherapeutics, Inc. · Employee Stock Option (Right to Buy)D Disposition to Issuer	Chief Operating Officer	DDisposition to Issuer	−9,499 sh	—	—	0
2025-12-12	BOLTBolt Biotherapeutics, Inc. · Employee Stock Option (Right to Buy)A Award	Chief Operating Officer	AAward	+11.4K sh	—	—	11,399
2025-12-12	BOLTBolt Biotherapeutics, Inc. · Employee Stock Option (Right to Buy)D Disposition to Issuer	Chief Operating Officer	DDisposition to Issuer	−11.4K sh	—	—	0
2025-12-12	BOLTBolt Biotherapeutics, Inc. · Employee Stock Option (Right to Buy)A Award	Chief Operating Officer	AAward	+11.7K sh	—	—	11,749
2025-12-12	BOLTBolt Biotherapeutics, Inc. · Employee Stock Option (Right to Buy)D Disposition to Issuer	Chief Operating Officer	DDisposition to Issuer	−11.7K sh	—	—	0
2025-12-12	BOLTBolt Biotherapeutics, Inc. · Employee Stock Option (Right to Buy)A Award	Chief Operating Officer	AAward	+7,749 sh	—	—	7,749
2025-12-12	BOLTBolt Biotherapeutics, Inc. · Employee Stock Option (Right to Buy)D Disposition to Issuer	Chief Operating Officer	DDisposition to Issuer	−7,749 sh	—	—	0
2025-12-12	BOLTBolt Biotherapeutics, Inc. · Employee Stock Option (Right to Buy)A Award	Chief Operating Officer	AAward	+17.5K sh	—	—	17,499
2025-12-12	BOLTBolt Biotherapeutics, Inc. · Employee Stock Option (Right to Buy)D Disposition to Issuer	Chief Operating Officer	DDisposition to Issuer	−17.5K sh	—	—	0
2025-10-22	BOLTBolt Biotherapeutics, Inc.A Award	Chief Operating Officer	AAward	+30K sh	—	—	38,918
2025-05-01	BOLTBolt Biotherapeutics, Inc. · Stock Option (Right to Buy)A Award	Chief Operating Officer	AAward	+350K sh	—	—	350,000
2024-07-23	BOLTBolt Biotherapeutics, Inc. · Stock Option (Right to Buy)A Award	Chief Operating Officer	AAward	+155K sh	—	—	155,000
2024-03-04	BOLTBolt Biotherapeutics, Inc. · Stock Option (Right to Buy)A Award	Chief Operating Officer	AAward	+235K sh	—	—	235,000
2023-12-06	BOLTBolt Biotherapeutics, Inc.P Purchase	Chief Operating Officer	PPurchase	+2,500 sh	$0.78	+$1,955	8,918
2023-02-27	BOLTBolt Biotherapeutics, Inc. · Stock Option (Right to Buy)A Award	Chief Operating Officer	AAward	+228K sh	—	—	228,000
2022-12-06	BOLTBolt Biotherapeutics, Inc.P Purchase	Chief Operating Officer	PPurchase	+2,500 sh	$1.18	+$2,953.75	6,418
2022-06-06	BOLTBolt Biotherapeutics, Inc.P Purchase	Chief Operating Officer	PPurchase	+2,500 sh	$1.64	+$4,101.25	3,918
2022-02-18	BOLTBolt Biotherapeutics, Inc. · Stock Option (Right to Buy)A Award	Chief Operating Officer	AAward	+190K sh	—	—	190,000
2021-02-04	BOLTBolt Biotherapeutics, Inc. · Stock Option (Right to Buy)A Award	Chief Operating Officer	AAward	+100K sh	—	—	100,000
2011-05-16	MAXYGEN INCM Exercise/Conversion	Senior Vice President	MExercise/Conversion	+19.8K sh	—	—	101,876
2011-05-16	MAXYGEN INCD Disposition to Issuer	Senior Vice President	DDisposition to Issuer	−19.8K sh	—	—	82,076
2011-05-16	MAXYGEN INCPerformance UnitsM Exercise/Conversion	Senior Vice President	MExercise/Conversion	−19.8K sh	—	—	0
2010-11-30	MAXYGEN INCM Exercise/Conversion	Senior Vice President	MExercise/Conversion	+25K sh	$3.51	+$87.8K	82,076
2010-11-30	MAXYGEN INCEmployee Stock Option (right to buy)M Exercise/Conversion	Senior Vice President	MExercise/Conversion	−25K sh	—	—	0
2010-05-03	MAXYGEN INCF Tax Payment	Senior Vice President	FTax Payment	−21.1K sh	$6.72	−$142K	57,076
2009-09-22	MAXYGEN INCPerformance UnitsA Award	Senior Vice President	AAward	+246K sh	—	—	246,394
2009-09-18	MAXYGEN INCF Tax Payment	Senior Vice President	FTax Payment	−1,015 sh	$6.68	−$6,780.2	81,745
2009-05-01	MAXYGEN INCF Tax Payment	Senior Vice President	FTax Payment	−7,240 sh	$5.65	−$40.9K	82,760

Recent filings

Accepted (ET)
Sep 214
Yonehiro Grant0001193125-26-396894
SEC(opens sec.gov)
Feb 44
Yonehiro Grant0001193125-26-037692
SEC(opens sec.gov)
Dec 164
Yonehiro Grant0001193125-25-321148
SEC(opens sec.gov)

Companies

Address

C/O BOLT BIOTHERAPEUTICS, INC. 900 CHESAPEAKE DRIVE

REDWOOD CITY, CA, 94063