IDEAYA Biosciences, Inc. (IDYA)
Nasdaq: IDYA · Pharmaceutical Preparations · South San Francisco, CA · filing with the SEC since 2016
Who owns IDEAYA Biosciences, Inc.
As filed with the SECHolders of 5% or more
5
Janus Henderson Group PLC holds 8.3% of Common Stock, as its SCHEDULE 13G/A filed May 15, 2026 says.
Directors and officers
14
report now, of 24 people on the record since 2019. Their holdings as a group are not read here.
Institutions as a whole
n/a
The record does not read the share held by managers that file Form 13F, so none is printed and no split of the rest is estimated. What it holds is the 5 named at left.
Holders of 5% or moreshare of the class, as filed
Janus Henderson Group PLC
SCHEDULE 13G/A · filed May 15, 2026 · Common Stock · 7.3% in Nov 14, 2025
Blackrock, Inc.
SCHEDULE 13G/A · filed Apr 17, 2025 · Common Stock · 9.7% in Feb 5, 2025
Capital Research Global Investors
SCHEDULE 13G/A · filed Feb 12, 2026 · Common Stock · 7.5% in Aug 13, 2025
Baker Bros. Advisors LP
SCHEDULE 13G · filed Aug 14, 2026 · Common Stock, par value $0.0001 per share
Vanguard Capital Management
SCHEDULE 13G · filed Jul 31, 2026 · Common Stock
Federated Hermes, Inc.
SCHEDULE 13G/A · filed Jan 8, 2026 · COMMON STOCK · reported falling below 5%
Point72 Asset Management, L.P.
SCHEDULE 13G/A · filed Feb 17, 2026 · Common Stock, par value $0.0001 per share · reported falling below 5%, from 5% in Jun 9, 2025
The Vanguard Group
SCHEDULE 13G/A · filed Mar 27, 2026 · Common Stock · reported falling below 5%
What IDYA reports owning in othersstakes of 5% or more, and other ties
Other ties the annual report names
Novartis International Pharmaceuticals Limited
An entity · legal entity · owns, named in the 10-K filed Feb 17, 2026
Insider tradesForm 4
3sales
1purchases
3sales on a scheduled plan
2people selling
$1.4Msold, in dollars
$1.6Mbought, in dollars
Open-market trades on Form 4 from Oct 8, 2025 to Oct 8, 2026. A scheduled plan is a selling program set in advance under SEC rule 10b5-1. The trades are listed as filed and do not feed the grade.
By calendar yearSoldBought
2026 runs to Oct 8, 2026. Dollars as filed, summed by the transaction date.
People who traded in the window3 of 44 on the roster
| Person | Role as filed | Sales | Sold | On a plan | Buys | Bought |
|---|---|---|---|---|---|---|
| Hata Yujiro S | President and CEO | 2 | $1.0M | 2 | 0 | $0 |
| Ruiz Briseno Andres | Chief Accounting Officer | 1 | $400,000 | 1 | 0 | $0 |
| Stein Jeffrey | director | 0 | $0 | 0 | 1 | $1.6M |