Chang David J. — SEC Form 4 filings
SEC reporting owner CIK 1790552. 5 Form 4 filings on record with FilingPulse; latest filed 2026-03-02.
Transaction summary — filings shown
Covers all 5 filings on record, filed 2024-03-04 to 2026-03-02. Counts and totals are arithmetic on values as filed — descriptive data, not a recommendation.
- Open-market purchases (code P, non-derivative): 1 leg across 1 filing — 8,800 shares, $19,888 total (shares × price as filed).
- Open-market sales (code S, non-derivative): none reported.
- Other reported legs (grants, option exercises, tax withholding, gifts, derivative-security transactions, …): 17.
- Largest priced transaction: purchase of 8,800 shares @ $2.26 ($19,888) in Cabaletta Bio, Inc., filed 2026-01-21.
By issuer — same filings
Open-market purchase/sale legs on non-derivative securities, grouped by issuer. Role is as filed on the newest filing for that issuer. Dollar totals cover priced legs only (shares × price as filed). Ordered by priced transaction value, largest first.
| Issuer | Role (as filed) | Filings | Purchases (P) | Sales (S) | Other legs |
|---|---|---|---|---|---|
| Cabaletta Bio, Inc. (CABA) | Chief Medical Officer | 5 | 1 leg · 8,800 sh · $19,888 | — | 17 |
Form 4 filings — Chang David J.
| Filed | Form | Issuer | Reported transactions | Source |
|---|---|---|---|---|
| 2026-03-02 | 4 | Cabaletta Bio, Inc. (CABA) | Grant/award (A): 225,000 (derivative) @ $0 | EDGAR |
| 2026-01-21 | 4 | Cabaletta Bio, Inc. (CABA) | Purchase (P): 8,800 @ $2.26 | EDGAR |
| 2025-05-19 | 4 | Cabaletta Bio, Inc. (CABA) | Disposition to issuer (D): 185,709 (derivative) @ $0 · Grant/award (A): 185,709 (derivative) @ $0 · Disposition to issuer (D): 48,836 (derivative) @ $0 · Grant/award (A): 48,836 (derivative) @ $0 · Disposition to issuer (D): 38,238 (derivative) @ $0 · Grant/award (A): 38,238 (derivative) @ $0 · +8 more | EDGAR |
| 2025-03-04 | 4 | Cabaletta Bio, Inc. (CABA) | Grant/award (A): 145,000 (derivative) @ $0 | EDGAR |
| 2024-03-04 | 4 | Cabaletta Bio, Inc. (CABA) | Grant/award (A): 130,000 (derivative) @ $0 | EDGAR |
FilingPulse's Form 4 archive currently extends back to 2024-01-11 and is expanding backward through EDGAR history — earlier filings by this insider may not be indexed yet. Names and roles are shown as filed.
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