CLYM · NASDAQ · Biotechnology

Climb Bio (CLYM)

Develops antibody programs for immune-mediated diseases.

$16.20
Pre-market+1.16 (+7.71%)
At close$15.04(+1.48%)

Breakdown13F · 13D/G · Form 4

Insiders3 holders · as of Jun 30, 20260.46%261.3K shares
Strategic holders1 holder · as of Jan 7, 20265.94%3.40M shares
Otherremainder93.60%53.60M shares

57.26M company shares as of Aug 22, 2026 · holders as of their latest filing

The share count has not been confirmed by a second filing; stakes use it as it stands.

Top shareholders13F · 13D/G · Form 4

HolderStakeSharesEvidence
Ra Capital Management, L.P.Strategicdirector, 10 percent owner
5.94%3.40MForm 4filed Jan 7, 2026
Stephen Basil ThomasInsiderdirector
0.27%154,657Form 4filed Feb 27, 2026
Aoife BrennanInsiderdirector, officer: President and CEO
0.15%87,731Form 4filed Jun 30, 2026
Emily PimblettInsiderofficer: SVP, Finance & CAO
0.03%18,888Form 4filed Jun 20, 2025

Form 4 — an insider's transaction report

Institutions13F

No 13F holders on record.

Ownership statements13D/G · 5% or more, as filed

No 13D/G filer at 5% or more on record.

Insider tradesForm 4

Latest trades

DateInsiderTypeSharesAvg priceOwned after
Jun 29, 2026
Aoife Brennandirector, officer: President and CEO
Sale30,902$13.1787,731
Feb 26, 2026
Stephen Basil Thomasdirector
Sale16,313$7.01154,657
Feb 25, 2026
Stephen Basil Thomasdirector
Sale33,687$7.00170,970
Feb 13, 2026
Stephen Basil Thomasdirector
Sale10,000$5.81204,657
Feb 12, 2026
Stephen Basil Thomasdirector
Sale90,000$5.23214,657
Jan 5, 2026
Ra Capital Management, L.P.director, 10 percent owner:
Purchase7,111$3.503,403,429
Dec 11, 2025
Ra Capital Management, L.P.director, 10 percent owner:
Purchase213,099$2.183,294,856
Dec 12, 2025
Ra Capital Management, L.P.director, 10 percent owner:
Purchase101,462$2.863,396,318

CongressHouse and Senate disclosures

Not reported.