SEC Insider Transactions from Chang David J..

Last updated: 2026-03-14 11:54 UTC | Total transactions: 19

David J. Chang, Chief Medical Officer of Cabaletta Bio Inc ($CABA), made one open market purchase of company shares in the last 365 days, totaling $19,888. His most recent buy occurred on January 21, 2026. Among 4,983 insiders tracked for purchases, his activity ranks 3,857th by amount, below the average of $1.5 million across 3.3 transactions per insider. Chang reported no open market sales in this period.

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Transaction Date Company Ticker Insider Name Title Transaction Type Security Shares Price Shares Owned Following Total Shares Outstanding % of Owned % of Outstanding
March 2, 2026 Cabaletta Bio, Inc. $CABA Chang David J. Chief Medical Officer A Stock Option (Right to Buy) 225000 $0.00 225,000.0000 96,265,204 9999.99% 0.23%
Jan. 21, 2026 Cabaletta Bio, Inc. $CABA Chang David J. Chief Medical Officer P Common Stock 8800 $2.26 8,800.0000 96,265,204 9999.99% 0.01%
May 19, 2025 Cabaletta Bio, Inc. $CABA Chang David J. Chief Medical Officer D Stock Option (Right to Buy) 48836 $0.00 0.0000 50,743,101 100.00% 0.10%
May 19, 2025 Cabaletta Bio, Inc. $CABA Chang David J. Chief Medical Officer A Stock Option (Right to Buy) 48836 $0.00 48,836.0000 50,743,101 9999.99% 0.10%
May 19, 2025 Cabaletta Bio, Inc. $CABA Chang David J. Chief Medical Officer D Stock Option (Right to Buy) 38238 $0.00 0.0000 50,743,101 100.00% 0.08%
May 19, 2025 Cabaletta Bio, Inc. $CABA Chang David J. Chief Medical Officer A Stock Option (Right to Buy) 38238 $0.00 38,238.0000 50,743,101 9999.99% 0.08%
May 19, 2025 Cabaletta Bio, Inc. $CABA Chang David J. Chief Medical Officer D Stock Option (Right to Buy) 113500 $0.00 0.0000 50,743,101 100.00% 0.22%
May 19, 2025 Cabaletta Bio, Inc. $CABA Chang David J. Chief Medical Officer A Stock Option (Right to Buy) 113500 $0.00 113,500.0000 50,743,101 9999.99% 0.22%
May 19, 2025 Cabaletta Bio, Inc. $CABA Chang David J. Chief Medical Officer D Stock Option (Right to Buy) 135000 $0.00 0.0000 50,743,101 100.00% 0.27%
May 19, 2025 Cabaletta Bio, Inc. $CABA Chang David J. Chief Medical Officer D Stock Option (Right to Buy) 185709 $0.00 0.0000 50,743,101 100.00% 0.37%
May 19, 2025 Cabaletta Bio, Inc. $CABA Chang David J. Chief Medical Officer D Stock Option (Right to Buy) 150000 $0.00 0.0000 50,743,101 100.00% 0.30%
May 19, 2025 Cabaletta Bio, Inc. $CABA Chang David J. Chief Medical Officer A Stock Option (Right to Buy) 150000 $0.00 150,000.0000 50,743,101 9999.99% 0.30%
May 19, 2025 Cabaletta Bio, Inc. $CABA Chang David J. Chief Medical Officer D Stock Option (Right to Buy) 130000 $0.00 0.0000 50,743,101 100.00% 0.26%
May 19, 2025 Cabaletta Bio, Inc. $CABA Chang David J. Chief Medical Officer A Stock Option (Right to Buy) 130000 $0.00 130,000.0000 50,743,101 9999.99% 0.26%
May 19, 2025 Cabaletta Bio, Inc. $CABA Chang David J. Chief Medical Officer A Stock Option (Right to Buy) 135000 $0.00 135,000.0000 50,743,101 9999.99% 0.27%
May 19, 2025 Cabaletta Bio, Inc. $CABA Chang David J. Chief Medical Officer A Stock Option (Right to Buy) 185709 $0.00 185,709.0000 50,743,101 9999.99% 0.37%
March 3, 2025 Cabaletta Bio, Inc. $CABA Chang David J. Chief Medical Officer A Stock Option (Right to Buy) 145000 $0.00 145,000.0000 0 9999.99% 0.00%
March 1, 2024 Cabaletta Bio, Inc. $CABA Chang David J. Chief Medical Officer A Stock Option (Right to Buy) 130000 $0.00 130,000.0000 0 9999.99% 0.00%
Jan. 18, 2023 Cabaletta Bio, Inc. $CABA Chang David J. Chief Medical Officer A Stock Option (Right to Buy) 150000 $0.00 150,000.0000 0 9999.99% 0.00%