How many insider trades does FilingIQ track for GBIO?

FilingIQ tracks 578 Form 4 insider transactions for GBIO (Generation Bio Co.), covering filings from Jun 16, 2020 onwards. 0 of those were filed in the last 90 days.

Are GBIO insiders net buyers or net sellers?

Across the full Form 4 history for GBIO, 25 transactions (4%) were open-market purchases and 167 (29%) were open-market sales. Compensatory awards and option exercises are filtered out of these counts.

Where does GBIO insider data come from?

Every transaction shown on this page is sourced directly from SEC EDGAR Form 4 filings. FilingIQ parses the raw XML, normalises insider identity across reporting variations, and scores each trade on its multi-factor composite model.

What sector is GBIO in?

Generation Bio Co. (GBIO) is classified in the Healthcare sector, specifically Biotechnology, with a current market capitalisation of $35.98M.

GBIO insider trading

Healthcare

Generation Bio Co. — scored insider trade history from SEC Form 4 filings, parsed and contextualised by FilingIQ.

Total Form 4 trades

578

Last 90 days

Buys / sells

4% / 29%

Market cap

$35.98M

About Generation Bio Co.

Generation Bio Co., a biotechnology company, discovers, develops, and commercializes redosable therapeutics that reprogram T cells in vivo to reduce or eliminate the production and persistence of autoreactive T cells. It develops cell-targeted lipid nanoparticles (ctLNP) to selectively deliver small interfering RNA (siRNA) T cells to selectively delivery, intracellular, and genetically precise mechanism of target engagement could unlock a series of high-value historically undruggable disease-driving genes in autoimmunity. The company was formerly known as Torus Therapeutics, Inc. and changed its name to Generation Bio Co. in November 2017. Generation Bio Co. was incorporated in 2016 and is headquartered in Cambridge, Massachusetts.

Company website: generationbio.com

GBIO insider activity at a glance

FilingIQ has scored 578 insider transactions for GBIO since Jun 16, 2020. The most recent filing in our index is dated Feb 9, 2026.

Across the full history, 25 open-market purchases and 167 open-market sales were filed under transaction codes P and S respectively. Compensatory share awards (code A) and option exercises (code M) are tracked separately and not counted here.

The average FilingIQ composite score on GBIO insider trades is 61.2/100, produced by FilingIQ's multi-factor Form 4 model. Model framework documented at methodology.

View live GBIO trades on FilingIQ Raw filings on SEC EDGAR

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13F funds holding GBIO

Yiheng Capital Management, L.P.

$77570 · 0.0% of AUM

Frequently asked

How many insider trades does FilingIQ track for GBIO?: FilingIQ tracks 578 Form 4 insider transactions for GBIO (Generation Bio Co.), covering filings from Jun 16, 2020 onwards. 0 of those were filed in the last 90 days.
Are GBIO insiders net buyers or net sellers?: Across the full Form 4 history for GBIO, 25 transactions (4%) were open-market purchases and 167 (29%) were open-market sales. Compensatory awards and option exercises are filtered out of these counts.
Where does GBIO insider data come from?: Every transaction shown on this page is sourced directly from SEC EDGAR Form 4 filings. FilingIQ parses the raw XML, normalises insider identity across reporting variations, and scores each trade on its multi-factor composite model.
What sector is GBIO in?: Generation Bio Co. (GBIO) is classified in the Healthcare sector, specifically Biotechnology, with a current market capitalisation of $35.98M.

Methodology & sources

Every GBIO insider transaction shown on FilingIQ is parsed directly from a public SEC Form 4 XML filing. Insider identity is normalised across reporting variants (CIK changes, name spellings, related-party indirect holdings). The FilingIQ composite score is documented in full on the team page and algo disclosure. Not investment advice; see disclaimer.