How many insider trades does FilingIQ track for RLYB?

FilingIQ tracks 56 Form 4 insider transactions for RLYB (Rallybio Corp), covering filings from Jul 28, 2021 onwards. 11 of those were filed in the last 90 days.

Are RLYB insiders net buyers or net sellers?

Across the full Form 4 history for RLYB, 24 transactions (43%) were open-market purchases and 15 (27%) were open-market sales. Compensatory awards and option exercises are filtered out of these counts.

Where does RLYB 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 RLYB in?

Rallybio Corp (RLYB) is classified in the Healthcare sector, specifically Biotechnology, with a current market capitalisation of $76.07M.

RLYB insider trading

NasdaqCM Healthcare

Rallybio Corp — scored insider trade history from SEC Form 4 filings, parsed and contextualised by FilingIQ.

Total Form 4 trades

Last 90 days

Buys / sells

43% / 27%

Market cap

$76.07M

About Rallybio Corp

Rallybio Corporation, a clinical-stage biotechnology company, engages in the development and commercialization of life-transforming therapies for patients suffering from severe and rare diseases. Its lead product candidate is the RLYB116, an inhibitor of complement component 5 (C5) to treat several diseases of complement dysregulation which has completed phase 1 trial; and RLYB332, a preclinical antibody, for the treatment of severe anemia with ineffective erythropoiesis and iron overload. The company has a strategic alliance with AbCellera to discover, develop, and commercialize novel antibody-based therapeutics for rare diseases, as well as collaboration agreement with Johnson & Johnson to provide therapeutic solutions for pregnant individuals at risk of fetal and neonatal alloimmune thrombocytopenia. Rallybio Corporation was founded in 2018 and is headquartered in New Haven, Connecticut.

Company website: www.rallybio.com

RLYB insider activity at a glance

FilingIQ has scored 56 insider transactions for RLYB since Jul 28, 2021. The most recent filing in our index is dated May 12, 2026.

Across the full history, 24 open-market purchases and 15 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 RLYB insider trades is 51.7/100, produced by FilingIQ's multi-factor Form 4 model. Model framework documented at methodology.

View live RLYB trades on FilingIQ Raw filings on SEC EDGAR

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13F funds holding RLYB

JOHNSON & JOHNSON (JNJ)

$2.49M · 0.4% of AUM

Frequently asked

How many insider trades does FilingIQ track for RLYB?: FilingIQ tracks 56 Form 4 insider transactions for RLYB (Rallybio Corp), covering filings from Jul 28, 2021 onwards. 11 of those were filed in the last 90 days.
Are RLYB insiders net buyers or net sellers?: Across the full Form 4 history for RLYB, 24 transactions (43%) were open-market purchases and 15 (27%) were open-market sales. Compensatory awards and option exercises are filtered out of these counts.
Where does RLYB 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 RLYB in?: Rallybio Corp (RLYB) is classified in the Healthcare sector, specifically Biotechnology, with a current market capitalisation of $76.07M.

Methodology & sources

Every RLYB 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.