Synlogic Inc. Insider Trading

SYBX

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Last 12 months

No open-market buying or selling by insiders.

The last open-market buy by an executive or director was in May 2022.

Net open-market

0 buys · 0 sales

Under a 10b5-1 plan

—

no sales

Insiders who bought / sold

0 / 0

executives and directors

Last open-market buy

May 2022

May 24, 2022

Get an email when SYBX's executives or directors buy, or make a large sale outside a plan.

Trades · last 2 years

Date	Insider	Trade	Shares	Price	Value	Of their stake	Filing
Oct 29, 2025	Mary Beth Dooley See Remarks below	SoldNo plan	157	$1.81	$284	1.2%	Form 4
Apr 2, 2025	Mary Beth Dooley See Remarks below	SoldNo plan	144	$1.20	$173	1.1%	Form 4
Feb 3, 2025	Mary Beth Dooley See Remarks below	SoldNo plan	2,107	$1.33	3K	14%	Form 4

Oct 29, 2025No plan
Mary Beth Dooley
See Remarks below · sold 157 at $1.81
$284
1.2% of stake
Apr 2, 2025No plan
Mary Beth Dooley
See Remarks below · sold 144 at $1.20
$173
1.1% of stake
Feb 3, 2025No plan
Mary Beth Dooley
See Remarks below · sold 2,107 at $1.33
3K
14% of stake

How to read this. Insiders sell for many reasons: taxes, diversifying, a house. Open-market buys are rarer and say more. A 10b5-1 plan is a trading schedule set up months in advance, so those sales were not timed on news. Large holders (funds and 10% owners) are listed under Everything but not counted as insiders. If you own or watch SYBX, we send a push when an executive buys or makes a large sale outside a plan.

Source: SEC Form 4 filings, filed within two business days of each trade and checked for new ones every hour.

Peers

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Spot a number that looks wrong? Check it in SYBX's SEC filings or

Download this analysis as a PDF (Pro)

Data sourced from SEC EDGAR filings and third-party price providers. Scores, valuations, and metrics are algorithmic estimates. This is not investment advice. See our Terms and Methodology.

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