Rallybio Holdings, LLC☆Watch⊞Compare

Analyst read est. — computed against this company's niche peers in the same era. Inputs shown; not a quoted figure.

Procedural diagnosis est. — rule-based common-sense checks over the filing pattern, issuer name, activity cadence, and surfaced operating evidence.

Rallybio Holdings, LLC behaves more like a recurring private-offering issuer than a conventional venture-backed operating company.

No named principal in this company's public records yet — see all operators below.

Explore how these operators interlock with other companies in the operator network.

Rallybio Holdings, LLC is one of 5376 Other Health Care companies tracked from NEW HAVEN. By capital raised it ranks among the largest (ahead of 98% of sector peers), and in the upper tier by modeled valuation est..

Ranking is computed against this company's own sector cohort — reported capital is fact; valuation tiers are modeled.

As reported in public records reported — not modeled.

Solid bars are reported offering amounts reported; hatched bars are the modeled post-money valuation est. — both on one shared scale so you can read raise-vs-worth at each round directly. Use the toggles to overlay data labels and the niche-peer / market average value lines.

Round size and date are reported; the stage label is inferred from round size (latest is Series D+ — a $100M–$400M round). Valuation is modeled from stage benchmarks scaled by the health care sector profile. Directional, not a quoted figure.

Benchmarked against 5376 companies in Other Health Care. Each bar is a median (the middle company, not an average — outliers don't skew it). Two yardsticks: real money raised (reported on Form D) and modeled value (our estimate est.). These are whole-sector medians across all stages, except the per-stage row.

Raised more than 98% of sector peers (real $). Modeled value above 72% of peers (estimate).

A tighter cohort than the sector chart above — only companies at the same stage (Series D+) that last raised in the same ~3-year era, ranked by modeled value est. (not money raised). This is the exact set the analyst read compares against, so a like-for-like cohort is what makes "over/under-valued" meaningful. This company ranks #15 of 17.

Stage is inferred from round size est., not reported on the filing — a round's dollar size maps to a bucket: Pre-Seed <$1.0M · Seed $1.0M–$4.0M · Series A $4.0M–$15M · Series B $15M–$40M · Series C $40M–$100M · Series D+ $100M–$400M · Growth/Late >$400M.

Step-up, pace versus the sector's normal cadence, and revenue/exemption moves — read straight from the reported round facts reported.

1. Series A$6.0M2018-04-20
   • First recorded raise — entered as Series A.
   • 7 investors on this round.
2. Series D+$145.2M2020-03-27
   • Raised again after 23 mo — slower than the ~14 mo sector norm.
   • Round 24.2× larger than the prior — scaling up.
   • 28 investors on this round.
3. Series C$93.2M2020-03-27
   • Filed alongside the prior round (same month) — likely a tranche or amendment.
   • Round 1.6× smaller than the prior — bridge or down round.
   • 24 investors on this round.
4. Series D+$6.6M2024-04-10
   • Raised again after 48 mo — slower than the ~14 mo sector norm.
   • Round 14.1× smaller than the prior — bridge or down round.
   • 1 investor on this round.

Predictive signals are modeled est. from this company's own cadence and step-up, plus sector benchmarks — directional, not advice. Peer set and a CSV export live in your analyst workspace.

Officers, directors and promoters named in this company's public recordsreported — the people who run it (not its investors). "Also runs" counts come from name-matching across all records, so verify before acting.

Rallybio Holdings, LLC is an official record sourced from the U.S. Securities and Exchange Commission (SEC). U.S. data is aggregated from SEC Form D filings.

Nearest neighbours across the whole database — matched on sector, stage and capital scale, and on shared operators (officers or directors named at both companies in public filings). A discovery shortlist, not a valuation cohort — verify before acting, the same way modeled figures are directional.

Matched by meaning, not labels — a local language model reads each company's name, sector and description and ranks the closest in that learned space. This catches look-alikes that cross sector boundaries; the structured list above explains its matches, this one trusts the text. Directional, like every modeled signal here.

See where Rallybio Holdings, LLC sits in the wider market — its sector, location and stage cohorts, each with their own leaderboards and capital-flow timelines.

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