Insider · CIK 0001790552

Chang David J.

Reports to the SEC for 1 company · PHILADELPHIA, PA

sec.gov

Transactions

Companies

Filings

CIK

0001790552

Forms 4 and 5

Insider transactions

23 trades

Date	Company	Role	Code	Shares	Price	Value	Shares after
2026-03-02	CABACabaletta Bio, Inc. · Stock Option (Right to Buy)A Award	Chief Medical Officer	AAward	+225K sh	—	—	225,000
2026-01-21	CABACabaletta Bio, Inc.P Purchase	Chief Medical Officer	PPurchase	+8,800 sh	$2.26	+$19.9K	8,800
2025-05-19	CABACabaletta Bio, Inc. · Stock Option (Right to Buy)D Disposition to Issuer	Chief Medical Officer	DDisposition to Issuer	−38.2K sh	—	—	0
2025-05-19	CABACabaletta Bio, Inc. · Stock Option (Right to Buy)A Award	Chief Medical Officer	AAward	+114K sh	—	—	113,500
2025-05-19	CABACabaletta Bio, Inc. · Stock Option (Right to Buy)D Disposition to Issuer	Chief Medical Officer	DDisposition to Issuer	−135K sh	—	—	0
2025-05-19	CABACabaletta Bio, Inc. · Stock Option (Right to Buy)A Award	Chief Medical Officer	AAward	+135K sh	—	—	135,000
2025-05-19	CABACabaletta Bio, Inc. · Stock Option (Right to Buy)D Disposition to Issuer	Chief Medical Officer	DDisposition to Issuer	−150K sh	—	—	0
2025-05-19	CABACabaletta Bio, Inc. · Stock Option (Right to Buy)A Award	Chief Medical Officer	AAward	+150K sh	—	—	150,000
2025-05-19	CABACabaletta Bio, Inc. · Stock Option (Right to Buy)D Disposition to Issuer	Chief Medical Officer	DDisposition to Issuer	−130K sh	—	—	0
2025-05-19	CABACabaletta Bio, Inc. · Stock Option (Right to Buy)A Award	Chief Medical Officer	AAward	+130K sh	—	—	130,000
2025-05-19	CABACabaletta Bio, Inc. · Stock Option (Right to Buy)D Disposition to Issuer	Chief Medical Officer	DDisposition to Issuer	−186K sh	—	—	0
2025-05-19	CABACabaletta Bio, Inc. · Stock Option (Right to Buy)A Award	Chief Medical Officer	AAward	+186K sh	—	—	185,709
2025-05-19	CABACabaletta Bio, Inc. · Stock Option (Right to Buy)D Disposition to Issuer	Chief Medical Officer	DDisposition to Issuer	−48.8K sh	—	—	0
2025-05-19	CABACabaletta Bio, Inc. · Stock Option (Right to Buy)A Award	Chief Medical Officer	AAward	+48.8K sh	—	—	48,836
2025-05-19	CABACabaletta Bio, Inc. · Stock Option (Right to Buy)A Award	Chief Medical Officer	AAward	+38.2K sh	—	—	38,238
2025-05-19	CABACabaletta Bio, Inc. · Stock Option (Right to Buy)D Disposition to Issuer	Chief Medical Officer	DDisposition to Issuer	−114K sh	—	—	0
2025-03-03	CABACabaletta Bio, Inc. · Stock Option (Right to Buy)A Award	Chief Medical Officer	AAward	+145K sh	—	—	145,000
2024-03-01	CABACabaletta Bio, Inc. · Stock Option (Right to Buy)A Award	Chief Medical Officer	AAward	+130K sh	—	—	130,000
2023-01-18	CABACabaletta Bio, Inc. · Stock Option (Right to Buy)A Award	Chief Medical Officer	AAward	+150K sh	—	—	150,000
2022-01-18	CABACabaletta Bio, Inc. · Stock Option (Right to Buy)A Award	Chief Medical Officer	AAward	+135K sh	—	—	135,000
2021-03-01	CABACabaletta Bio, Inc. · Stock Option (Right to Buy)A Award	Chief Medical Officer	AAward	+114K sh	—	—	113,500
2020-03-01	CABACabaletta Bio, Inc. · Stock Option (Right to Buy)A Award	Chief Medical Officer	AAward	+38.2K sh	—	—	38,238
2019-10-24	CABACabaletta Bio, Inc. · Stock Option (Right to Buy)A Award	Chief Medical Officer	AAward	+48.8K sh	—	—	48,836

Recent filings

Accepted (ET)
Mar 24
Chang David J.0001193125-26-086129
SEC(opens sec.gov)
Jan 214
Chang David J.0001193125-26-018327
SEC(opens sec.gov)
May 194
Chang David J.0000950170-25-074808
SEC(opens sec.gov)
Mar 44
Chang David J.0000950170-25-032295
SEC(opens sec.gov)
Mar 44
Chang David J.0000950170-24-025027
SEC(opens sec.gov)
Jan 274
Chang David J.0000899243-23-002908
SEC(opens sec.gov)
Jan 194
Chang David J.0000899243-22-002510
SEC(opens sec.gov)

Companies

Cabaletta Bio, Inc.Chief Medical OfficerCABA

Address

C/O CABALETTA BIO, INC. 2929 ARCH STREET, SUITE 600

PHILADELPHIA, PA, 19104