SYNLOGIC, INC. (SYBX) is a publicly traded company in the Unknown sector. Across all available filings, 22 corporate insiders have executed 58 transactions totaling $362.5K, demonstrating a bearish sentiment with -$300.1K in net insider flow. The most recent transaction on Oct 29, 2025 involved a sale of 157 shares valued at $284.
No significant insider buying has been recorded for SYBX in the recent period.
No significant insider selling has been recorded for SYBX in the recent period.
Based on recent SEC filings, insider sentiment for SYBX is bearish with an Insider Alignment Score of 9/100 and a net flow of -$300.1K. Insiders are reducing their positions, though this can be driven by factors unrelated to company outlook.
Insider trading at SYNLOGIC, INC. (SYBX) refers to stock transactions made by corporate insiders—executives, directors, and beneficial owners holding more than 10% of the company's shares. These individuals have access to material non-public information and are required by law to report their trades to the SEC within two business days. Currently, 22 insiders are actively trading SYBX stock, having executed 58 transactions in the past 90 days. The most active insider is Chau Quang Khuong (Executive), who has made 2 transactions totaling $12.0M.
Get notified when executives and directors at SYBX file new Form 4 transactions
Date | Insider | Title | Type | Shares | Price | Value | Flags |
|---|---|---|---|---|---|---|---|
| Oct 29, 2025 | Beth Dooley Mary | Executive | Sale | 157 | $1.81 | $284 | |
| Apr 2, 2024 | Awad Antoine | Executive | Sale | 372 | $1.73 | $644 | |
| Apr 2, 2024 | Beth Dooley Mary | Executive | Sale | 188 | $1.73 | $325 | |
| Apr 3, 2023 | Vangsted Jensen Michael | Executive | Sale | 2,553 | $0.58 | $1.5K | |
| Apr 3, 2023 | Brennan Aoife | Executive | Sale | 19,042 | $0.58 | $11.0K | 10b5-1 |
| Apr 3, 2023 | Awad Antoine | Executive | Sale | 6,438 | $0.58 | $3.7K | |
| May 24, 2022 | Vangsted Jensen Michael | Executive | Purchase | 9,500 | $1.12 | $10.6K | |
| Apr 4, 2022 | Awad Antoine | Executive | Sale | 2,650 | $2.45 | $6.5K | |
| Apr 4, 2022 | Brennan Aoife | Executive | Sale | 8,894 | $2.45 | $21.8K | |
| Mar 3, 2022 | Vangsted Jensen Michael | Executive | Award | 30,000 | $N/A | $0 | |
| Feb 4, 2022 | Awad Antoine | Executive | Award | 40,820 | $N/A | $0 | |
| Feb 4, 2022 | Brennan Aoife | Executive | Award | 106,920 | $N/A | $0 | |
| Apr 20, 2021 | Quang Khuong Chau | Executive | Award | 1,666,666 | $3.00 | $5.0M | Large |
| Apr 20, 2021 | Gp VI Llc Orbimed Capital | Executive | Award | 1,666,666 | $3.00 | $5.0M | Large |
| Mar 10, 2021 | Awad Antoine | Executive | Award | 17,500 | $N/A | $0 |
| TYPE | COUNT | VALUE | % |
|---|---|---|---|
Award(A) | 36 | $65.4M | 99.4% |
Sale(S) | 19 | $331.3K | 0.5% |
Purchase(P) | 2 | $31.2K | 0.0% |
Gift(G) | 1 | $0 | 0.0% |
Insider selling pressure at SYNLOGIC, INC. has increased, with 22 insiders executing 58 transactions across all time. Total sales of $331.3K significantly outpace purchases of $31.2K, resulting in a net outflow of $300.1K. This selling activity appears largely discretionary, which may warrant closer attention from investors.