Insider · CIK 0001566617

Jackson Scott Thomas

Reports to the SEC for 5 companies · CAMBRIDGE, MA

sec.gov

Transactions

Companies

Filings

CIK

0001566617

Forms 4 and 5

Insider transactions

50 trades

Date	Company	Role	Code	Shares	Price	Value	Shares after
2026-06-23	SPROSpero Therapeutics, Inc. · Stock Option (right to buy)A Award	Director	AAward	+20K sh	—	—	20,000
2026-06-23	SPROSpero Therapeutics, Inc.A Award	Director	AAward	+10K sh	—	—	85,000
2026-05-19	MGNXMACROGENICS INC · Stock Option (right to buy)A Award	Director	AAward	+22K sh	—	—	22,000
2026-05-19	MGNXMACROGENICS INC · Restricted Stock UnitA Award	Director	AAward	+3,750 sh	—	—	3,750
2026-05-18	MGNXMACROGENICS INC · Restricted Stock UnitM Exercise/Conversion	Director	MExercise/Conversion	−3,750 sh	—	—	0
2026-05-18	MGNXMACROGENICS INCM Exercise/Conversion	Director	MExercise/Conversion	+3,750 sh	—	—	14,750
2025-12-05	Mural Oncology plcStock Option (right to buy)D Disposition to Issuer	Director	DDisposition to Issuer	−8,462 sh	—	—	0
2025-12-05	Mural Oncology plcStock Option (right to buy)D Disposition to Issuer	Director	DDisposition to Issuer	−8,637 sh	—	—	0
2025-12-05	Mural Oncology plcStock Option (right to buy)D Disposition to Issuer	Director	DDisposition to Issuer	−15K sh	—	—	0
2025-06-12	SPROSpero Therapeutics, Inc.A Award	Director	AAward	+20K sh	—	—	75,000
2025-06-11	Mural Oncology plcStock Option (right to buy)A Award	Director	AAward	+8,637 sh	—	—	8,637
2025-05-21	MGNXMACROGENICS INC · Restricted Stock UnitA Award	Director	AAward	+3,750 sh	—	—	3,750
2025-05-21	MGNXMACROGENICS INC · Stock Option (right to buy)A Award	Director	AAward	+22K sh	—	—	22,000
2025-05-20	MGNXMACROGENICS INCM Exercise/Conversion	Director	MExercise/Conversion	+6,500 sh	—	—	11,000
2025-05-20	MGNXMACROGENICS INC · Restricted Stock UnitM Exercise/Conversion	Director	MExercise/Conversion	−6,500 sh	—	—	0
2024-05-30	Mural Oncology plcStock Option (right to buy)A Award	Director	AAward	+8,462 sh	—	—	8,462
2024-05-30	Mural Oncology plcStock Option (right to buy)A Award	Director	AAward	+8,462 sh	$3.35	+$28.3K	8,462
2024-05-29	SPROSpero Therapeutics, Inc.A Award	Director	AAward	+20K sh	—	—	55,000
2024-05-21	MGNXMACROGENICS INC · Stock Option (right to buy)A Award	Director	AAward	+16.5K sh	—	—	16,500
2024-05-21	MGNXMACROGENICS INC · Restricted Stock UnitA Award	Director	AAward	+6,500 sh	—	—	6,500
2024-05-20	MGNXMACROGENICS INC · Restricted Stock UnitM Exercise/Conversion	Director	MExercise/Conversion	−4,500 sh	—	—	0
2024-05-20	MGNXMACROGENICS INCM Exercise/Conversion	Director	MExercise/Conversion	+4,500 sh	—	—	4,500
2024-05-01	CBIOCRESCENT BIOPHARMA, INC. · Stock Option (right to buy)A Award	Director	AAward	+40K sh	—	—	40,000
2023-12-14	Mural Oncology plcStock Option (right to buy)A Award	Director	AAward	+15K sh	—	—	15,021
2023-10-05	SPROSpero Therapeutics, Inc.A Award	Director	AAward	+20K sh	—	—	35,000
2023-05-31	MGNXMACROGENICS INC · Restricted Stock UnitA Award	Director	AAward	+4,500 sh	—	—	4,500
2023-05-31	MGNXMACROGENICS INC · Stock Option (right to buy)A Award	Director	AAward	+19K sh	—	—	19,000
2023-05-19	CBIOCRESCENT BIOPHARMA, INC. · Stock Option (right to buy)A Award	Director	AAward	+35K sh	—	—	35,000
2022-09-15	SPROSpero Therapeutics, Inc.A Award	Director	AAward	+15K sh	—	—	15,000
2022-05-19	MGNXMACROGENICS INC · Stock Option (right to buy)A Award	Director	AAward	+18K sh	—	—	18,000
2022-05-18	CBIOCRESCENT BIOPHARMA, INC. · Stock Option (right to buy)A Award	Director	AAward	+21K sh	—	—	21,000
2021-08-17	SPROSpero Therapeutics, Inc. · Stock Option (right to buy)A Award	Director	AAward	+7,500 sh	—	—	7,500
2021-05-18	CBIOCRESCENT BIOPHARMA, INC. · Stock Option (right to buy)A Award	Director	AAward	+10.5K sh	—	—	10,500
2021-05-18	CBIOCRESCENT BIOPHARMA, INC.A Award	Director	AAward	+5,250 sh	—	—	5,250
2021-05-13	MGNXMACROGENICS INC · Stock Option (right to buy)A Award	Director	AAward	+15K sh	—	—	15,000
2020-10-27	SPROSpero Therapeutics, Inc. · Stock Option (right to buy)A Award	Director	AAward	+7,500 sh	—	—	7,500
2020-06-23	SPROSpero Therapeutics, Inc. · Stock Option (right to buy)A Award	Director	AAward	+15K sh	—	—	15,000
2020-05-22	CBIOCRESCENT BIOPHARMA, INC. · Stock Option (right to buy)A Award	Director	AAward	+21K sh	—	—	21,000
2020-05-14	MGNXMACROGENICS INC · Stock Option (right to buy)A Award	Director	AAward	+15K sh	—	—	15,000
2019-05-17	CBIOCRESCENT BIOPHARMA, INC. · Stock Option (right to buy)A Award	Director	AAward	+21K sh	—	—	21,000
2019-05-16	MGNXMACROGENICS INC · Stock Option (right to buy)A Award	Director	AAward	+10K sh	—	—	10,000
2018-11-27	CBIOCRESCENT BIOPHARMA, INC. · Stock Option (right to buy)A Award	Director	AAward	+22K sh	—	—	22,000
2018-05-17	MGNXMACROGENICS INC · Stock Option (right to buy)A Award	Director	AAward	+10K sh	—	—	10,000
2017-05-18	MGNXMACROGENICS INC · Stock Option (right to buy)A Award	Director	AAward	+10K sh	—	—	10,000
2017-01-24	MGNXMACROGENICS INC · Stock Option (right to buy)A Award	Director	AAward	+20K sh	—	—	20,000
2016-07-12	Celator Pharmaceuticals IncStock Option (right to buy)D Disposition to Issuer	Director, Chief Executive Officer	DDisposition to Issuer	−157K sh	$27.03	−$4.24M	0
2016-07-12	Celator Pharmaceuticals IncStock Option (right to buy)D Disposition to Issuer	Director, Chief Executive Officer	DDisposition to Issuer	−98.4K sh	$27.81	−$2.74M	0
2016-07-12	Celator Pharmaceuticals IncD Disposition to Issuer	Director, Chief Executive Officer	DDisposition to Issuer	−302K sh	$30.25	−$9.12M	0
2016-07-12	Celator Pharmaceuticals IncStock Option (right to buy)D Disposition to Issuer	Director, Chief Executive Officer	DDisposition to Issuer	−119K sh	$28.93	−$3.44M	0
2016-07-12	Celator Pharmaceuticals IncStock Option (right to buy)D Disposition to Issuer	Director, Chief Executive Officer	DDisposition to Issuer	−295K sh	$28.93	−$8.53M	0

Recent filings

Accepted (ET)
Jun 254
Jackson Scott Thomas0001193125-26-283202
SEC(opens sec.gov)
May 204
Jackson Scott Thomas0001566617-26-000002
SEC(opens sec.gov)
Dec 54
Jackson Scott Thomas0001193125-25-308773
SEC(opens sec.gov)
Jun 164
Jackson Scott Thomas0000950170-25-087017
SEC(opens sec.gov)
Jun 134
Jackson Scott Thomas0000950170-25-085819
SEC(opens sec.gov)
May 224
Jackson Scott Thomas0001125345-25-000083
SEC(opens sec.gov)
Jun 54/A
Jackson Scott Thomas0000950170-24-069314
SEC(opens sec.gov)
Jun 34
Jackson Scott Thomas0000950170-24-067707
SEC(opens sec.gov)
May 304
Jackson Scott Thomas0000950170-24-066652
SEC(opens sec.gov)
May 234
Jackson Scott Thomas0001125345-24-000126
SEC(opens sec.gov)

Companies

Address

C/O SPERO THERAPEUTICS, INC. 675 MASSACHUSETTS AVENUE, 14TH FLOOR

CAMBRIDGE, MA, 02139