SYBX insider transaction filings
SYNLOGIC, INC. — 12 most recent Form 4 filings from SEC EDGAR, normalized by FilingPulse. Latest filing: 2026-08-14. Screen SYBX transaction legs live →
Insider transaction summary — last 90 days
2026-06-24 to 2026-09-22, from the filings listed below: 1 Form 4 filing. Counts and totals are arithmetic on values as filed — descriptive data, not a recommendation.
- Open-market purchases (code P, non-derivative): none reported.
- Open-market sales (code S, non-derivative): none reported.
- Other reported legs (grants, option exercises, tax withholding, gifts, derivative-security transactions, …): 2.
By insider — same window
Open-market purchase/sale legs on non-derivative securities, grouped by the filing's reporting owner(s); joint filings appear once. Dollar totals cover priced legs only (shares × price as filed). Ordered by priced transaction value, largest first.
| Insider | Filings | Purchases (P) | Sales (S) | Other legs |
|---|---|---|---|---|
| New Enterprise Associates 14, L.P. — Director, 10% owner & NEA Partners 14, L.P. — Director, 10% owner & NEA 14 GP, LTD — Director, 10% owner & Florence Anthony A. Jr. — Director, 10% owner & SANDELL SCOTT D — Director, 10% owner & Makhzoumi Mohamad — Director, 10% owner | 1 | — | — | 2 |
Recent Form 4 filings — SYNLOGIC, INC.
| Filed | Form | Insider | Reported transactions | Source |
|---|---|---|---|---|
| 2026-08-14 | 4 | New Enterprise Associates 14, L.P. — Director, 10% owner NEA Partners 14, L.P. — Director, 10% owner NEA 14 GP, LTD — Director, 10% owner Florence Anthony A. Jr. — Director, 10% owner SANDELL SCOTT D — Director, 10% owner Makhzoumi Mohamad — Director, 10% owner | Code (H): 2,640,845 (derivative) · Purchase (P): 2,640,845 (derivative) | EDGAR |
| 2025-10-31 | 4 | Dooley Mary Beth — See Remarks below | Sale (S): 157 @ $1.81 | EDGAR |
| 2025-04-29 | 4 | Flynn James P — Director | Grant/award (A): 15,000 @ $0 | EDGAR |
| 2025-04-29 | 4 | Shea Richard P — Director | Grant/award (A): 15,000 @ $0 | EDGAR |
| 2025-04-03 | 4 | Dooley Mary Beth — See Remarks below | Sale (S): 144 @ $1.20 | EDGAR |
| 2025-02-04 | 4 | Dooley Mary Beth — See Remarks below | Sale (S): 2,107 @ $1.33 | EDGAR |
| 2024-10-30 | 4 | Dooley Mary Beth — Head of Finance | Sale (S): 79 @ $1.40 | EDGAR |
| 2024-04-04 | 4 | Dooley Mary Beth — Head of Finance | Sale (S): 188 @ $1.73 | EDGAR |
| 2024-04-04 | 4 | Awad Antoine — Chief Operating Officer | Sale (S): 372 @ $1.73 | EDGAR |
| 2024-03-21 | 4 | Flynn James P — Director | Grant/award (A): 4,000 (derivative) @ $0 | EDGAR |
| 2024-01-04 | 4 | Hurter Patricia N. — Director | Grant/award (A): 14,678 (derivative) @ $0 | EDGAR |
| 2024-01-04 | 4 | Barrett Peter — Director | Grant/award (A): 24,923 (derivative) @ $0 | EDGAR |
Recent 8-K events — SYNLOGIC, INC.
| Filed | Form | Items reported | Source |
|---|---|---|---|
| 2026-07-29 | 8-K | 1.01 — Entry into a Material Definitive Agreement 3.03 — Material Modification to Rights of Security Holders 5.01 — Changes in Control of Registrant 7.01 — Regulation FD Disclosure 9.01 — Financial Statements and Exhibits | EDGAR |
| 2026-01-29 | 8-K/A | 3.01 — Notice of Delisting or Failure to Satisfy a Continued Listing Rule or Standard; Transfer of Listing 8.01 — Other Events | EDGAR |
| 2026-01-20 | 8-K | 3.01 — Notice of Delisting or Failure to Satisfy a Continued Listing Rule or Standard; Transfer of Listing | EDGAR |
| 2025-12-16 | 8-K | 5.02 — Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers 5.07 — Submission of Matters to a Vote of Security Holders 9.01 — Financial Statements and Exhibits | EDGAR |
| 2025-11-26 | 8-K | 3.01 — Notice of Delisting or Failure to Satisfy a Continued Listing Rule or Standard; Transfer of Listing | EDGAR |
| 2025-02-21 | 8-K | 5.02 — Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers | EDGAR |
| 2025-01-14 | 8-K | 5.02 — Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers | EDGAR |
| 2024-12-23 | 8-K | 5.02 — Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers | EDGAR |
| 2024-12-05 | 8-K | 5.07 — Submission of Matters to a Vote of Security Holders 9.01 — Financial Statements and Exhibits | EDGAR |
| 2024-11-12 | 8-K | 2.02 — Results of Operations and Financial Condition 9.01 — Financial Statements and Exhibits | EDGAR |
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