Insider · CIK 0002015112
Mary Beth Dooley
Files at SYBX (SYNLOGIC, INC.). First filing Oct 30, 2024, latest Oct 31, 2025.
In brief
Mary Beth Dooley files SEC Form 4 as officer at SYBX (SYNLOGIC, INC.). Since Oct 30, 2024, Mary Beth Dooley has reported 0 open-market buys worth $0 and 4 open-market sells worth $3,370, the latest filed on Oct 31, 2025.
A track record needs three past buys with six months of prices behind them; Mary Beth Dooley has 0, so none is measured yet.
The newest scored trade: sold $284 of SYBX on Oct 29, 2025, filed Oct 31, 2025, scored 15 (weak). In the last 12 months: 0 buys worth $0 and 1 sell worth $284.
Where the trades landed
Last year at the company this insider has traded most, with each buy and sell on the bar it happened.
SYBX: SYNLOGIC, INC.
Daily candles, adjusted for splits and dividends. Green arrows are insider buys, red are sells, sized by value. Click a marked bar to open the signal.Charts by TradingView Lightweight Charts™
Signals
This insider’s open-market buys and sells, scored.
| Score | Company | Value | Holdings | Price context | Filed |
|---|---|---|---|---|---|
| 15Weak | SYBXsell SYNLOGIC, INC. | $284 157 shares | -1% | +82% from low-3% from high | |
| 15Weak | SYBXsell SYNLOGIC, INC. | $173 144 shares | -1% | 0% from low-29% from high | |
| 20Weak | SYBXsell SYNLOGIC, INC. | $2,802 2,107 shares | -14% | - | |
| 15Weak | SYBXsell SYNLOGIC, INC. | $111 79 shares | -1% | - |
Transactions
Every row this insider has filed, 4 in all, newest first.
| Date | Company | Transaction | Shares | Price | Value | Holdings after | Filed |
|---|---|---|---|---|---|---|---|
| Oct 29, 2025 | SYBX SYNLOGIC, INC. | SOpen-market sale Common Stock | -157 | $1.81 | $284 | 12,744 | Oct 31, 2025 |
| Apr 2, 2025 | SYBX SYNLOGIC, INC. | SOpen-market sale Common Stock | -144 | $1.20 | $173 | 12,901 | Apr 3, 2025 |
| Feb 3, 2025 | SYBX SYNLOGIC, INC. | SOpen-market sale Common Stock | -2,107 | $1.33 | $2,802 | 13,045 | Feb 4, 2025 |
| Oct 29, 2024 | SYBX SYNLOGIC, INC. | SOpen-market sale Common Stock | -79 | $1.40 | $111 | 15,152 | Oct 30, 2024 |
Questions about Mary Beth Dooley
Answered from the filings on this page, as of the latest one.
Is Mary Beth Dooley buying or selling?
In the last 12 months Mary Beth Dooley reported 0 open-market buys worth $0 and 1 open-market sell worth $284 on SEC Form 4; the latest was sold $284 of SYBX on Oct 29, 2025. Grants, option exercises and tax withholding are not counted.
How did Mary Beth Dooley's past buys perform?
Not measured yet. InsiderTell needs three past buys with six months of prices to publish a track record, and Mary Beth Dooley has 0.
Where does Mary Beth Dooley file Form 4?
Mary Beth Dooley has filed Form 4 at SYBX (SYNLOGIC, INC.) as See Remarks below. A Form 4 is required of officers, directors and holders of more than 10% of a share class within two business days of a trade.
Not investment advice. Scores and forward returns are decision support built from public SEC filings and past prices; they describe what happened after comparable filings, not what will happen after this one. Do your own research and size your risk.