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United States Biotechnology & Medical Research

IDEAYA Biosciences Inc (IDYA)

Track

The most recent insider transaction was a buy of 50,000 shares by Jeffrey Stein on March 2, 2026. Prior to this, several planned and proposed sales occurred in May 2024, involving executives such as Yujiro S. Hata and Michael Anthony White, and former officer Jason Throne. These sales represent significant value.
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Ticker: IDYA Exchange: NSM
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• Purchase • Sale • Planned purchase • Planned sale Net purchase Net sale Activity signal Earnings
Top insiders
Trades
Stein Jeffrey
1 purchase — total 1,647,890 USD
Buy 2 Mar 2026
Value US$4,144,160.22 | Price 158.40 | Shares 45,596
Proposed sale 26 Aug 2024
Value US$1,523,612.31 | Price 72.32 | Shares 45,682
Planned sale 29 May 2024
Value US$31,296.63 | Price 36.78 | Shares 851
Planned sale 29 May 2024
Value US$1,001,587.79 | Price 36.23 | Shares 27,649
Proposed sale 29 May 2024
Value US$1,054,500.00 | Price 37.00 | Shares 28,500
Planned sale 16 May 2024
Value US$184,249.73 | Price 42.37 | Shares 4,349
Planned sale 16 May 2024
Value US$1,255,504.60 | Price 41.73 | Shares 30,084
Planned sale 15 May 2024
Value US$22,191.30 | Price 44.12 | Shares 503
Planned sale 15 May 2024
Value US$1,293,933.88 | Price 43.48 | Shares 29,761
Planned sale 15 May 2024
Value US$2,281,631.17 | Price 42.57 | Shares 53,592
Planned sale 14 May 2024
Value US$96,347.62 | Price 41.84 | Shares 2,303
Planned sale 14 May 2024
Value US$2,263,432.65 | Price 41.60 | Shares 54,408
Proposed sale 14 May 2024
Value US$7,238,000.00 | Price 41.36 | Shares 175,000
Planned sale 9 Feb 2024
Value US$92,044.60 | Price 46.02 | Shares 2,000
Planned sale 9 Feb 2024
Value US$1,072,715.11 | Price 45.54 | Shares 23,557
Proposed sale 9 Feb 2024
Value US$677,935.00 | Price 45.60 | Shares 14,867
Planned sale 8 Feb 2024
Value US$3,422,834.97 | Price 45.15 | Shares 75,815
Planned sale 1 Feb 2024
Value US$180.04 | Price 45.01 | Shares 4
Planned sale 1 Feb 2024
Value US$28,080.00 | Price 45.00 | Shares 624
Proposed sale 1 Feb 2024
Value US$4,500,000.00 | Price 45.00 | Shares 100,000
Planned sale 22 Jan 2024
Value US$84,050.20 | Price 42.03 | Shares 2,000
Planned sale 16 Jan 2024
Value US$2,519,968.40 | Price 40.17 | Shares 62,739
Planned sale 12 Jan 2024
Value US$76,025.60 | Price 38.01 | Shares 2,000
Planned sale 12 Jan 2024
Value US$490,913.27 | Price 40.04 | Shares 12,261
Proposed sale 12 Jan 2024
Value US$149,480.00 | Price 37.37 | Shares 4,000
Proposed sale 12 Jan 2024
Value US$3,000,000.00 | Price 40.00 | Shares 75,000
Proposed sale 27 Dec 2023
Value US$1,951,027.00 | Price 35.04 | Shares 55,680
Planned sale 15 Dec 2023
Value US$350,371.00 | Price 35.04 | Shares 10,000
Planned sale 15 Dec 2023
Value US$2,627,617.50 | Price 35.03 | Shares 75,000
Proposed sale 15 Dec 2023
Value US$2,627,619.00 | Price 35.03 | Shares 75,000
Proposed sale 15 Dec 2023
Value US$350,370.00 | Price 35.04 | Shares 10,000
Planned sale 14 Dec 2023
Value US$11,153.64 | Price 34.01 | Shares 328
Planned sale 14 Dec 2023
Value US$56,848.00 | Price 34.00 | Shares 1,672
Proposed sale 14 Dec 2023
Value US$68,016.00 | Price 34.01 | Shares 2,000
Proposed sale 11 Dec 2023
Value US$1,413,562.50 | Price 31.50 | Shares 44,875
Proposed sale 4 Dec 2023
Value US$1,392,463.24 | Price 32.41 | Shares 42,964
Proposed sale 28 Nov 2023
Value US$1,183,500.00 | Price 30.00 | Shares 39,450
Proposed sale 27 Nov 2023
Value US$1,471,000.00 | Price 31.53 | Shares 46,654
Planned sale 3 Nov 2023
Value US$155,359.83 | Price 30.09 | Shares 5,163
Planned sale 12 Sep 2023
Value US$15,005.00 | Price 30.01 | Shares 500
Planned sale 12 Sep 2023
Value US$15,000.00 | Price 30.00 | Shares 500
Planned sale 5 Sep 2023
Value US$52,159.85 | Price 30.03 | Shares 1,737
Planned sale 1 Sep 2023
Value US$60,016.00 | Price 30.01 | Shares 2,000
Planned sale 1 Sep 2023
Value US$63,062.58 | Price 30.03 | Shares 2,100
Proposed sale 1 Sep 2023
Value US$600,000.00 | Price 30.00 | Shares 20,000
Planned sale 29 Aug 2023
Value US$144,351.50 | Price 28.87 | Shares 5,000
Planned sale 21 Aug 2023
Value US$25,819.49 | Price 26.40 | Shares 978
Planned sale 18 Aug 2023
Value US$100,820.16 | Price 26.38 | Shares 3,822
Planned sale 16 Aug 2023
Value US$2,640.00 | Price 26.40 | Shares 100
Planned sale 16 Aug 2023
Value US$2,645.00 | Price 26.45 | Shares 100
Planned sale 9 Aug 2023
Value US$125,429.50 | Price 25.09 | Shares 5,000
Planned sale 9 Aug 2023
Value US$62,613.25 | Price 25.05 | Shares 2,500
Proposed sale 9 Aug 2023
Value US$312,500.00 | Price 25.00 | Shares 12,500
Planned sale 10 Jul 2023
Value US$218,177.76 | Price 23.00 | Shares 9,485
Proposed sale 10 Jul 2023
Value US$330,403.00 | Price 22.81 | Shares 14,485
Planned sale 1 Jun 2023
Value US$81,791.84 | Price 23.02 | Shares 3,553
Planned sale 31 May 2023
Value US$9,937.51 | Price 23.00 | Shares 432
Planned sale 22 May 2023
Value US$11,500.00 | Price 23.00 | Shares 500
Proposed sale 22 May 2023
Value US$96,087.00 | Price 21.42 | Shares 4,485
Planned sale 4 Oct 2021
Value US$26,621.00 | Price 26.62 | Shares 1,000
Planned sale 4 Oct 2021
Value US$12,924.00 | Price 25.85 | Shares 500
Planned sale 9 Aug 2021
Value US$9,406.00 | Price 23.52 | Shares 400
Planned sale 9 Aug 2021
Value US$254,862.66 | Price 22.96 | Shares 11,100
Planned sale 27 Jul 2021
Value US$251,460.00 | Price 25.15 | Shares 10,000
Planned sale 6 Jul 2021
Value US$8,140.43 | Price 22.68 | Shares 359
Planned sale 6 Jul 2021
Value US$45,015.29 | Price 22.16 | Shares 2,031
Planned sale 6 Jul 2021
Value US$25,895.19 | Price 22.68 | Shares 1,142
Planned sale 6 Jul 2021
Value US$143,357.40 | Price 22.16 | Shares 6,468
Planned sale 7 Jun 2021
Value US$30,333.15 | Price 20.22 | Shares 1,500
Planned sale 11 May 2021
Value US$101,092.50 | Price 20.22 | Shares 5,000
Planned sale 10 Feb 2021
Value US$12,516.00 | Price 21.00 | Shares 596
Planned sale 9 Feb 2021
Value US$103,696.50 | Price 20.74 | Shares 5,000
Planned sale 9 Feb 2021
Value US$23,234.34 | Price 21.05 | Shares 1,104
Planned sale 8 Feb 2021
Value US$4,200.00 | Price 21.00 | Shares 200
Planned sale 8 Feb 2021
Value US$2,102.00 | Price 21.02 | Shares 100
Abbreviations B: Buy, S: Sell, PP: Planned purchase, PlS: Planned sale, PrS: Proposed sale, O: Option / Other
Notification date Transaction date B/S Transaction type Insider and/or position Nb. shares
Price
Value 		Number of shares Price Value Details
2026-03-02 2026-03-02 B Purchase
2.5
Stein Jeffrey
Non-Executive Director
45,596 +30.7%
158.40
US$4,144,160 		45,596 +30.7% 158.40 US$4,144,160
2024-08-26 2024-08-26 PrS Proposed sale
Jason Throne

Former Officer

Officer
45,682
72.32
US$1,523,612 		45,682 72.32 US$1,523,612
2024-05-31 2024-05-29 PlS Planned sale
WHITE MICHAEL ANTHONY

Chief Scientific Officer

Officer
34,956 +9.1%
144.82
US$3,016,844 		34,956 +9.1% 144.82 US$3,016,844
2024-05-31 2024-05-29 PlS Planned sale
WHITE MICHAEL ANTHONY

Chief Scientific Officer

Officer
27,649 -97.0%
36.23
US$1,001,588 		27,649 -97.0% 36.23 US$1,001,588
2024-05-29 2024-05-29 PrS Proposed sale
Michael White

Officer

Officer
28,500
37.00
US$1,054,500 		28,500 37.00 US$1,054,500
2024-05-16 2024-05-16 PlS Planned sale
Hata Yujiro S

President and CEO

Executive Director
4,349 -0.6%
42.37
US$184,250 		4,349 -0.6% 42.37 US$184,250
2024-05-16 2024-05-16 PlS Planned sale
Hata Yujiro S

President and CEO

Executive Director
30,084 -4.2%
41.73
US$1,255,505 		30,084 -4.2% 41.73 US$1,255,505
2024-05-16 2024-05-15 PlS Planned sale
Hata Yujiro S

President and CEO

Executive Director
503 -0.1%
44.12
US$22,191 		503 -0.1% 44.12 US$22,191
2024-05-16 2024-05-15 PlS Planned sale
Hata Yujiro S

President and CEO

Executive Director
29,761 -4.2%
43.48
US$1,293,934 		29,761 -4.2% 43.48 US$1,293,934
2024-05-16 2024-05-15 PlS Planned sale
Hata Yujiro S

President and CEO

Executive Director
53,592 -7.0%
42.57
US$2,281,631 		53,592 -7.0% 42.57 US$2,281,631
2024-05-16 2024-05-14 PlS Planned sale
Hata Yujiro S

President and CEO

Executive Director
2,303 -0.3%
41.84
US$96,348 		2,303 -0.3% 41.84 US$96,348
2024-05-16 2024-05-14 PlS Planned sale
Hata Yujiro S

President and CEO

Executive Director
54,408 -7.4%
41.60
US$2,263,433 		54,408 -7.4% 41.60 US$2,263,433
2024-05-14 2024-05-14 PrS Proposed sale
YUJIRO HATA

CEO
175,000
41.36
US$7,238,000 		175,000 41.36 US$7,238,000
2024-02-13 2024-02-09 PlS Planned sale
Ruiz Briseno Andres

See Remarks

Officer
2,000 -7.5%
46.02
US$92,045 		2,000 -7.5% 46.02 US$92,045
2024-02-12 2024-02-09 PlS Planned sale
Hata Yujiro S

President and CEO

Executive Director
23,557 -3.4%
45.54
US$1,072,715 		23,557 -3.4% 45.54 US$1,072,715
2024-02-09 2024-02-09 PrS Proposed sale
Andres Ruiz Briseno

Senior VP
14,867
45.60
US$677,935 		14,867 45.60 US$677,935
2024-02-12 2024-02-08 PlS Planned sale
Hata Yujiro S

President and CEO

Executive Director
75,815 -10.1%
45.15
US$3,422,835 		75,815 -10.1% 45.15 US$3,422,835
2024-02-05 2024-02-01 PlS Planned sale
Hata Yujiro S

President and CEO

Executive Director
4 -0.0%
45.01
US$180 		4 -0.0% 45.01 US$180
2024-02-05 2024-02-01 PlS Planned sale
Hata Yujiro S

President and CEO

Executive Director
624 -0.1%
45.00
US$28,080 		624 -0.1% 45.00 US$28,080
2024-02-01 2024-02-01 PrS Proposed sale
YUJIRO HATA

CEO
100,000
45.00
US$4,500,000 		100,000 45.00 US$4,500,000
2024-01-24 2024-01-22 PlS Planned sale
Ruiz Briseno Andres

See Remarks

Officer
2,000 -7.0%
42.03
US$84,050 		2,000 -7.0% 42.03 US$84,050
2024-01-17 2024-01-16 PlS Planned sale
Hata Yujiro S

President and CEO

Executive Director
62,739 -8.5%
40.17
US$2,519,968 		62,739 -8.5% 40.17 US$2,519,968
2024-01-17 2024-01-12 PlS Planned sale
Ruiz Briseno Andres

See Remarks

Officer
2,000 -6.6%
38.01
US$76,026 		2,000 -6.6% 38.01 US$76,026
2024-01-17 2024-01-12 PlS Planned sale
Hata Yujiro S

President and CEO

Executive Director
12,261 -1.8%
40.04
US$490,913 		12,261 -1.8% 40.04 US$490,913
2024-01-12 2024-01-12 PrS Proposed sale
Andres Ruiz Briseno

Senior VP
4,000
37.37
US$149,480 		4,000 37.37 US$149,480
2024-01-12 2024-01-12 PrS Proposed sale
YUJIRO HATA

CEO
75,000
40.00
US$3,000,000 		75,000 40.00 US$3,000,000
2023-12-27 2023-12-27 PrS Proposed sale
Paul Stone

Officer

Officer
55,680
35.04
US$1,951,027 		55,680 35.04 US$1,951,027
2023-12-19 2023-12-15 PlS Planned sale
Throne Jason

Chief Legal Officer

Officer
10,000 -100.0%
35.04
US$350,371 		10,000 -100.0% 35.04 US$350,371
2023-12-19 2023-12-15 PlS Planned sale
Hata Yujiro S

President and CEO

Executive Director
75,000 -10.0%
35.03
US$2,627,618 		75,000 -10.0% 35.03 US$2,627,618
2023-12-15 2023-12-15 PrS Proposed sale
YUJIRO HATA

CEO
75,000
35.03
US$2,627,619 		75,000 35.03 US$2,627,619
2023-12-15 2023-12-15 PrS Proposed sale
Jason Throne

Officer

Officer
10,000
35.04
US$350,370 		10,000 35.04 US$350,370
2023-12-18 2023-12-14 PlS Planned sale
Ruiz Briseno Andres

See Remarks

Officer
328 -1.1%
34.01
US$11,154 		328 -1.1% 34.01 US$11,154
2023-12-18 2023-12-14 PlS Planned sale
Ruiz Briseno Andres

See Remarks

Officer
1,672 -5.1%
34.00
US$56,848 		1,672 -5.1% 34.00 US$56,848
2023-12-14 2023-12-14 PrS Proposed sale
Andres Ruiz Briseno

Senior VP
2,000
34.01
US$68,016 		2,000 34.01 US$68,016
2023-12-11 2023-12-11 PrS Proposed sale
Paul Stone

Officer

Officer
44,875
31.50
US$1,413,562 		44,875 31.50 US$1,413,562
2023-12-04 2023-12-04 PrS Proposed sale
Paul Stone

Officer

Officer
42,964
32.41
US$1,392,463 		42,964 32.41 US$1,392,463
2023-11-28 2023-11-28 PrS Proposed sale
Paul Stone

Officer

Officer
39,450
30.00
US$1,183,500 		39,450 30.00 US$1,183,500
2023-11-27 2023-11-27 PrS Proposed sale
Paul Stone

Officer

Officer
46,654
31.53
US$1,471,000 		46,654 31.53 US$1,471,000
2023-11-07 2023-11-03 PlS Planned sale
Throne Jason

Chief Legal Officer

Officer
5,163 -100.0%
30.09
US$155,360 		5,163 -100.0% 30.09 US$155,360
2023-09-14 2023-09-12 PlS Planned sale
Throne Jason

Chief Legal Officer

Officer
500 -100.0%
30.01
US$15,005 		500 -100.0% 30.01 US$15,005
2023-09-14 2023-09-12 PlS Planned sale
Throne Jason

Chief Legal Officer

Officer
500 -50.0%
30.00
US$15,000 		500 -50.0% 30.00 US$15,000
2023-09-06 2023-09-05 PlS Planned sale
Throne Jason

Chief Legal Officer

Officer
1,737 -100.0%
30.03
US$52,160 		1,737 -100.0% 30.03 US$52,160
2023-09-06 2023-09-01 PlS Planned sale
Ruiz Briseno Andres

See Remarks

Officer
2,000 -5.8%
30.01
US$60,016 		2,000 -5.8% 30.01 US$60,016
2023-09-06 2023-09-01 PlS Planned sale
Throne Jason

Chief Legal Officer

Officer
2,100 -100.0%
30.03
US$63,063 		2,100 -100.0% 30.03 US$63,063
2023-09-01 2023-09-01 PrS Proposed sale
Jason Throne

Officer

Officer
20,000
30.00
US$600,000 		20,000 30.00 US$600,000
2023-08-31 2023-08-29 PlS Planned sale
Stone Paul A.

Chief Financial Officer

Officer
5,000 -35.0%
28.87
US$144,352 		5,000 -35.0% 28.87 US$144,352
2023-08-23 2023-08-21 PlS Planned sale
Stone Paul A.

Chief Financial Officer

Officer
978 -6.4%
26.40
US$25,819 		978 -6.4% 26.40 US$25,819
2023-08-18 2023-08-18 PlS Planned sale
Stone Paul A.

Chief Financial Officer

Officer
3,822 -20.0%
26.38
US$100,820 		3,822 -20.0% 26.38 US$100,820
2023-08-18 2023-08-16 PlS Planned sale
Stone Paul A.

Chief Financial Officer

Officer
100 -0.5%
26.40
US$2,640 		100 -0.5% 26.40 US$2,640
2023-08-18 2023-08-16 PlS Planned sale
Stone Paul A.

Chief Financial Officer

Officer
100 -0.5%
26.45
US$2,645 		100 -0.5% 26.45 US$2,645
2023-08-11 2023-08-09 PlS Planned sale
Throne Jason

Chief Legal Officer

Officer
5,000 -100.0%
25.09
US$125,430 		5,000 -100.0% 25.09 US$125,430
2023-08-11 2023-08-09 PlS Planned sale
Stone Paul A.

Chief Financial Officer

Officer
2,500 -11.5%
25.05
US$62,613 		2,500 -11.5% 25.05 US$62,613
2023-08-09 2023-08-09 PrS Proposed sale
Paul Stone

Officer

Officer
12,500
25.00
US$312,500 		12,500 25.00 US$312,500
2023-07-12 2023-07-10 PlS Planned sale
Throne Jason

Chief Legal Officer

Officer
9,485 -100.0%
23.00
US$218,178 		9,485 -100.0% 23.00 US$218,178
2023-07-10 2023-07-10 PrS Proposed sale
Jason Throne

Officer

Officer
14,485
22.81
US$330,403 		14,485 22.81 US$330,403
2023-06-02 2023-06-01 PlS Planned sale
Throne Jason

Chief Legal Officer

Officer
3,553 -100.0%
23.02
US$81,792 		3,553 -100.0% 23.02 US$81,792
2023-06-02 2023-05-31 PlS Planned sale
Throne Jason

Chief Legal Officer

Officer
432 -100.0%
23.00
US$9,938 		432 -100.0% 23.00 US$9,938
2023-05-24 2023-05-22 PlS Planned sale
Throne Jason

Chief Legal Officer

Officer
500 -100.0%
23.00
US$11,500 		500 -100.0% 23.00 US$11,500
2023-05-22 2023-05-22 PrS Proposed sale
Jason Throne

affiliate
4,485
21.42
US$96,087 		4,485 21.42 US$96,087
2021-10-07 2021-10-04 PlS Planned sale
Dillon Michael P.

SVP, Chief Scientific Officer

Officer
1,000 -1.3%
26.62
US$26,621 		1,000 -1.3% 26.62 US$26,621
2021-10-07 2021-10-04 PlS Planned sale
Dillon Michael P.

SVP, Chief Scientific Officer

Officer
500 -0.6%
25.85
US$12,924 		500 -0.6% 25.85 US$12,924
2021-08-11 2021-08-09 PlS Planned sale
Dillon Michael P.

SVP, Chief Scientific Officer

Officer
400 -0.4%
23.52
US$9,406 		400 -0.4% 23.52 US$9,406
2021-08-11 2021-08-09 PlS Planned sale
Dillon Michael P.

SVP, Chief Scientific Officer

Officer
11,100 -11.1%
22.96
US$254,863 		11,100 -11.1% 22.96 US$254,863
2021-07-29 2021-07-27 PlS Planned sale
Dillon Michael P.

SVP, Chief Scientific Officer

Officer
10,000 -9.2%
25.15
US$251,460 		10,000 -9.2% 25.15 US$251,460
2021-07-08 2021-07-06 PlS Planned sale
Throne Jason

SVP, General Counsel

Officer
359 -100.0%
22.68
US$8,140 		359 -100.0% 22.68 US$8,140
2021-07-08 2021-07-06 PlS Planned sale
Throne Jason

SVP, General Counsel

Officer
2,031 -85.0%
22.16
US$45,015 		2,031 -85.0% 22.16 US$45,015
2021-07-08 2021-07-06 PlS Planned sale
Throne Jason

SVP, General Counsel

Officer
1,142 -32.3%
22.68
US$25,895 		1,142 -32.3% 22.68 US$25,895
2021-07-08 2021-07-06 PlS Planned sale
Throne Jason

SVP, General Counsel

Officer
6,468 -64.7%
22.16
US$143,357 		6,468 -64.7% 22.16 US$143,357
2021-06-09 2021-06-07 PlS Planned sale
Dillon Michael P.

SVP, Chief Scientific Officer

Officer
1,500 -1.5%
20.22
US$30,333 		1,500 -1.5% 20.22 US$30,333
2021-05-13 2021-05-11 PlS Planned sale
Dillon Michael P.

SVP, Chief Scientific Officer

Officer
5,000 -4.8%
20.22
US$101,092 		5,000 -4.8% 20.22 US$101,092
2021-02-10 2021-02-10 PlS Planned sale
3.3
Lackner Mark

SVP, Head of Biology

Officer
596 -100.0%
21.00
US$12,516 		596 -100.0% 21.00 US$12,516
2021-02-10 2021-02-09 PlS Planned sale
Dillon Michael P.

SVP, Chief Scientific Officer

Officer
5,000 -4.8%
20.74
US$103,696 		5,000 -4.8% 20.74 US$103,696
2021-02-10 2021-02-09 PlS Planned sale
3.3
Lackner Mark

SVP, Head of Biology

Officer
1,104 -100.0%
21.05
US$23,234 		1,104 -100.0% 21.05 US$23,234
2021-02-10 2021-02-08 PlS Planned sale
3.3
Lackner Mark

SVP, Head of Biology

Officer
200 -100.0%
21.00
US$4,200 		200 -100.0% 21.00 US$4,200
2021-02-10 2021-02-08 PlS Planned sale
3.3
Lackner Mark

SVP, Head of Biology

Officer
100 -33.3%
21.02
US$2,102 		100 -33.3% 21.02 US$2,102
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