HATA YUJIRO S (President and CEO) sold 3.7% of their position (26.34K shares) of IDEAYA BIOSCIENCES, INC. on the open market
Open‑market sale worth $985.4K — a minor trim. Review remaining holdings and any 10b5‑1 plan disclosures.
S · 2 sales
Filed: 10/8/2026ACC: 0001610717-26-000434
DirectorOfficer· President and CEO
Since May 2019
-26.34K
Net shares
Net seller
$985.4K
Total sold
2
Open market trades
0B · 2S
4
Total transactions
26.34K acquired · 52.68K disposed
Non-Derivative Transactions3
Common Stock
Direct
Shares
+26.34K
Price / share
$4.31
Trade value
$113.52K
% of position
3.8%
10/6/2026
690.70K→717.03K
Common Stock
Direct
Shares
−25.54K
Price / share
$37.39
Trade value
$954.79K
% of position
3.6%
10/6/2026
717.03K→691.50K
Common Stock
Direct
Shares
−800.00
Price / share
$38.26
Trade value
$30.61K
% of position
0.1%
10/6/2026
691.50K→690.70K
Total
Net shares
+0.00
Net value
-$871.88K
| Security | Date | Type | Shares | Price / Share | Trade Value | % of Position | Held Before | Held After |
|---|---|---|---|---|---|---|---|---|
| Common Stock Direct | 10/6/2026 | M · Option Exercise | +26.34K | $4.31 | $113.52K | 3.8% | 690.70K | 717.03K |
| Common Stock Direct | 10/6/2026 | S · Sale | −25.54K | $37.39 | $954.79K | 3.6% | 717.03K | 691.50K |
| Common Stock Direct | 10/6/2026 | S · Sale | −800.00 | $38.26 | $30.61K | 0.1% | 691.50K | 690.70K |
| Total | +0.00 | -$871.88K | ||||||
Derivative Transactions1
Stock Option (right to buy)
Direct
Converts to
Common Stock
26.34K shares
Shares
−26.34K
Strike price
4.31
Held after
23.12K
Exercisable
—
10/6/2026
| Security | Converts To | Date | Type | Shares | Strike Price | Exercisable | Held After |
|---|---|---|---|---|---|---|---|
| Stock Option (right to buy) Direct | Common Stock26.34K shares | 10/6/2026 | M · Option Exercise | −26.34K | 4.31 | — | 23.12K |