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LeonaBio Inc (ATHA)

The most recent insider trading activity at LeonaBio Inc. occurred on March 4, 2026, with multiple executives, including the President and CEO, CFO, and Chief Scientific Officer, selling shares. These transactions represent a notable pattern of selling by key personnel. The last reported earnings were on November 6, 2025.
Stock chart
Ticker: ATHA Exchange: NAS


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Purchase Sale Planned purchase Planned sale Net purchase Net sale Activity signal Earnings
Top insiders
Trades
Litton Mark James
PRESIDENT and CEO
1 sale — total 27,688 USD
Sale 4 Mar 2026
Value US$1,554,291.43 | Price 458.68 | Shares 94,883
Sale 4 Mar 2026
Value US$658,118.99 | Price 408.72 | Shares 93,329
Sale 4 Mar 2026
Value US$7,131.36 | Price 5.37 | Shares 1,328
Sale 4 Mar 2026
Value US$7,297.83 | Price 5.37 | Shares 1,359
Sale 4 Mar 2026
Value US$9,236.40 | Price 5.37 | Shares 1,720
Proposed sale 4 Mar 2026
Value US$27,661.94 | Price 5.36 | Shares 5,156
Sale 2 Jan 2026
Value US$17,791.68 | Price 6.88 | Shares 2,586
Sale 2 Jan 2026
Value US$2,043.36 | Price 6.88 | Shares 297
Sale 2 Jan 2026
Value US$11,310.72 | Price 6.88 | Shares 1,644
Sale 2 Jan 2026
Value US$6,026.88 | Price 6.88 | Shares 876
Sale 2 Jan 2026
Value US$6,026.88 | Price 6.88 | Shares 876
Sale 1 Jul 2025
Value US$850.27 | Price 0.29 | Shares 2,897
Sale 1 Jul 2025
Value US$2,502.38 | Price 0.29 | Shares 8,526
Sale 1 Jul 2025
Value US$2,502.38 | Price 0.29 | Shares 8,526
Sale 1 Jul 2025
Value US$7,373.60 | Price 0.29 | Shares 25,123
Sale 1 Jul 2025
Value US$3,182.13 | Price 0.29 | Shares 10,842
Proposed sale 1 Jul 2025
Value US$7,374.00 | Price 0.29 | Shares 25,123
Proposed sale 1 Jul 2025
Value US$3,182.00 | Price 0.29 | Shares 10,842
Proposed sale 1 Jul 2025
Value US$2,502.00 | Price 0.29 | Shares 8,526
Proposed sale 1 Jul 2025
Value US$2,502.00 | Price 0.29 | Shares 8,526
Sale 2 Jan 2025
Value US$6,083.13 | Price 0.56 | Shares 10,826
Sale 2 Jan 2025
Value US$4,781.77 | Price 0.56 | Shares 8,510
Sale 2 Jan 2025
Value US$1,618.83 | Price 0.56 | Shares 2,881
Sale 2 Jan 2025
Value US$14,107.62 | Price 0.56 | Shares 25,107
Sale 2 Jan 2025
Value US$4,781.77 | Price 0.56 | Shares 8,510
Proposed sale 2 Jan 2025
Value US$6,083.00 | Price 0.56 | Shares 10,826
Proposed sale 2 Jan 2025
Value US$14,108.00 | Price 0.56 | Shares 25,107
Proposed sale 2 Jan 2025
Value US$4,782.00 | Price 0.56 | Shares 8,510
Proposed sale 2 Jan 2025
Value US$4,782.00 | Price 0.56 | Shares 8,510
Proposed sale 5 Sep 2024
Value US$0.56 | Price 0.00 | Shares 5,032
Sale 5 Sep 2024
Value US$1,429.15 | Price 0.57 | Shares 2,525
Sale 5 Sep 2024
Value US$1,429.15 | Price 0.57 | Shares 2,525
Sale 5 Sep 2024
Value US$1,429.15 | Price 0.57 | Shares 2,525
Sale 5 Sep 2024
Value US$719.95 | Price 0.57 | Shares 1,272
Sale 5 Sep 2024
Value US$2,848.11 | Price 0.57 | Shares 5,032
Buy 24 Jun 2024
Value US$66,179.22 | Price 2.42 | Shares 27,400
Buy 21 Jun 2024
Value US$33,871.50 | Price 2.26 | Shares 15,000
Sale 5 Jan 2024
Value US$7,018.92 | Price 2.91 | Shares 2,412
Sale 5 Jan 2024
Value US$7,018.92 | Price 2.91 | Shares 2,412
Sale 5 Jan 2024
Value US$14,026.20 | Price 2.91 | Shares 4,820
Buy 29 Dec 2023
Value US$390,210.52 | Price 2.38 | Shares 163,954
Buy 28 Dec 2023
Value US$999,419.12 | Price 2.44 | Shares 409,598
Buy 27 Dec 2023
Value US$73,265.52 | Price 2.28 | Shares 32,134
Buy 7 Jun 2023
Value US$40,307.50 | Price 3.44 | Shares 11,719
Buy 7 Jun 2023
Value US$9,720.60 | Price 3.40 | Shares 2,859
Buy 7 Jun 2023
Value US$1,416.91 | Price 3.36 | Shares 422
Buy 5 Jun 2023
Value US$30,154.00 | Price 3.02 | Shares 10,000
Buy 5 Jun 2023
Value US$29,999.00 | Price 3.00 | Shares 10,000
Buy 5 Jun 2023
Value US$29,997.00 | Price 3.00 | Shares 10,000
Buy 5 Jun 2023
Value US$45,000.00 | Price 3.00 | Shares 15,000
Buy 2 Jun 2023
Value US$10,066.01 | Price 2.95 | Shares 3,418
Buy 2 Jun 2023
Value US$18,823.20 | Price 2.86 | Shares 6,582
Buy 2 Jun 2023
Value US$27,533.00 | Price 2.75 | Shares 10,012
Buy 29 Mar 2023
Value US$12,000.00 | Price 2.40 | Shares 5,000
Sale 5 Jan 2023
Value US$3,515.28 | Price 2.91 | Shares 1,208
Sale 5 Jan 2023
Value US$7,018.92 | Price 2.91 | Shares 2,412
Buy 28 Dec 2022
Value US$142,250.00 | Price 2.85 | Shares 50,000
Buy 2 Dec 2022
Value US$98,700.00 | Price 3.29 | Shares 30,000
Buy 15 Nov 2022
Value US$16,442.00 | Price 3.29 | Shares 5,000
Buy 30 Jun 2022
Value US$3,293,072.38 | Price 2.99 | Shares 1,101,362
Buy 29 Jun 2022
Value US$807,300.00 | Price 2.99 | Shares 270,000
Sale 23 Jun 2022
Value US$7,031.66 | Price 2.69 | Shares 2,614
Sale 23 Jun 2022
Value US$11,279.17 | Price 2.69 | Shares 4,193
Sale 23 Jun 2022
Value US$21,412.40 | Price 2.69 | Shares 7,960
Sale 23 Jun 2022
Value US$7,031.66 | Price 2.69 | Shares 2,614
Sale 23 Jun 2022
Value US$7,031.66 | Price 2.69 | Shares 2,614
Buy 31 Mar 2022
Value US$104,880.00 | Price 13.11 | Shares 8,000
Buy 25 Jan 2021
Value US$6,999,997.50 | Price 22.50 | Shares 311,111
Buy 22 Sep 2020
Value US$18,000,008.00 | Price 17.00 | Shares 1,058,824
Buy 22 Sep 2020
Value US$18,000,008.00 | Price 17.00 | Shares 1,058,824
Buy 18 Sep 2020
Value US$12,750,000.00 | Price 17.00 | Shares 750,000
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
2026-03-05 2026-03-04 S Sale

PRESIDENT and CEO

Executive Director
94,883 +18.0%
458.68
US$1,554,291
94,883 +18.0% 458.68 US$1,554,291
2026-03-05 2026-03-04 S Sale

CHIEF FINANCIAL OFFICER

Officer
93,329 -16.4%
408.72
US$658,119
93,329 -16.4% 408.72 US$658,119
2026-03-05 2026-03-04 S Sale

GENERAL COUNSEL and CCO

Officer
84,600 -17.1%
147.12
US$1,327,675
84,600 -17.1% 147.12 US$1,327,675
2026-03-05 2026-03-04 S Sale

CHIEF SCIENTIFIC OFFICER

Officer
1,359 -5.1%
5.37
US$7,298
1,359 -5.1% 5.37 US$7,298
2026-03-05 2026-03-04 S Sale

CHIEF MEDICAL OFFICER

Officer
1,720 -9.8%
5.37
US$9,236
1,720 -9.8% 5.37 US$9,236
2026-03-04 2026-03-04 PrS Proposed sale

Officer; Director

Executive Director
5,156
5.36
US$27,662
5,156 5.36 US$27,662
2026-01-05 2026-01-02 S Sale

President and CEO

Executive Director
2,586 -6.0%
6.88
US$17,792
2,586 -6.0% 6.88 US$17,792
2026-01-05 2026-01-02 S Sale

Chief Financial Officer

Officer
297 -2.3%
6.88
US$2,043
297 -2.3% 6.88 US$2,043
2026-01-05 2026-01-02 S Sale

CHIEF MEDICAL OFFICER

Officer
1,644 -13.9%
6.88
US$11,311
1,644 -13.9% 6.88 US$11,311
2026-01-05 2026-01-02 S Sale

CHIEF SCIENTIFIC OFFICER

Officer
876 -4.1%
6.88
US$6,027
876 -4.1% 6.88 US$6,027
2026-01-05 2026-01-02 S Sale

General Counsel and CCO

Officer
876 -5.9%
6.88
US$6,027
876 -5.9% 6.88 US$6,027
2025-07-02 2025-07-01 S Sale

SVP, Finance and Accounting

Officer
2,897 -2.6%
0.29
US$850
2,897 -2.6% 0.29 US$850
2025-07-02 2025-07-01 S Sale

General Counsel and CCO

Officer
8,526 -7.1%
0.29
US$2,502
8,526 -7.1% 0.29 US$2,502
2025-07-02 2025-07-01 S Sale

CHIEF SCIENTIFIC OFFICER

Officer
8,526 -4.8%
0.29
US$2,502
8,526 -4.8% 0.29 US$2,502
2025-07-02 2025-07-01 S Sale

President and CEO

Executive Director
25,123 -7.2%
0.29
US$7,374
25,123 -7.2% 0.29 US$7,374
2025-07-02 2025-07-01 S Sale

CHIEF MEDICAL OFFICER

Officer
10,842 -13.1%
0.29
US$3,182
10,842 -13.1% 0.29 US$3,182
2025-07-01 2025-07-01 PrS Proposed sale

Officer; Director

Executive Director
25,123
0.29
US$7,374
25,123 0.29 US$7,374
2025-07-01 2025-07-01 PrS Proposed sale

Officer

Officer
10,842
0.29
US$3,182
10,842 0.29 US$3,182
2025-07-01 2025-07-01 PrS Proposed sale

Officer

Officer
8,526
0.29
US$2,502
8,526 0.29 US$2,502
2025-07-01 2025-07-01 PrS Proposed sale

Officer

Officer
8,526
0.29
US$2,502
8,526 0.29 US$2,502
2025-01-03 2025-01-02 S Sale

CHIEF MEDICAL OFFICER

Officer
10,826 -23.2%
0.56
US$6,083
10,826 -23.2% 0.56 US$6,083
2025-01-03 2025-01-02 S Sale

General Counsel and CCO

Officer
8,510 -9.2%
0.56
US$4,782
8,510 -9.2% 0.56 US$4,782
2025-01-03 2025-01-02 S Sale

VP of Finance

Officer
2,881 -3.1%
0.56
US$1,619
2,881 -3.1% 0.56 US$1,619
2025-01-03 2025-01-02 S Sale

President and CEO

Executive Director
25,107 -9.4%
0.56
US$14,108
25,107 -9.4% 0.56 US$14,108
2025-01-03 2025-01-02 S Sale

CHIEF SCIENTIFIC OFFICER

Officer
8,510 -6.1%
0.56
US$4,782
8,510 -6.1% 0.56 US$4,782
2025-01-02 2025-01-02 PrS Proposed sale

Officer

Officer
10,826
0.56
US$6,083
10,826 0.56 US$6,083
2025-01-02 2025-01-02 PrS Proposed sale

Officer; Director

Executive Director
25,107
0.56
US$14,108
25,107 0.56 US$14,108
2025-01-02 2025-01-02 PrS Proposed sale

Officer

Officer
8,510
0.56
US$4,782
8,510 0.56 US$4,782
2025-01-02 2025-01-02 PrS Proposed sale

Officer

Officer
8,510
0.56
US$4,782
8,510 0.56 US$4,782
2024-09-05 2024-09-05 PrS Proposed sale

Officer; Director

Executive Director
5,032
0.00
US$1
5,032 0.00 US$1
2024-09-05 2024-09-05 S Sale

COO and CDO

Officer
2,525 -10.8%
0.57
US$1,429
2,525 -10.8% 0.57 US$1,429
2024-09-05 2024-09-05 S Sale

GENERAL COUNSEL

Officer
2,525 -4.6%
0.57
US$1,429
2,525 -4.6% 0.57 US$1,429
2024-09-05 2024-09-05 S Sale

CHIEF SCIENTIFIC OFFICER

Officer
2,525 -2.7%
0.57
US$1,429
2,525 -2.7% 0.57 US$1,429
2024-09-05 2024-09-05 S Sale

CFO and Chief Business Officer

Officer
1,272 -1.3%
0.57
US$720
1,272 -1.3% 0.57 US$720
2024-09-05 2024-09-05 S Sale

President and CEO

Executive Director
5,032 -3.1%
0.57
US$2,848
5,032 -3.1% 0.57 US$2,848
2024-06-25 2024-06-24 B Purchase Non-Executive Director
27,400 +51.4%
2.42
US$66,179
27,400 +51.4% 2.42 US$66,179
2024-06-25 2024-06-21 B Purchase Non-Executive Director
15,000 +39.1%
2.26
US$33,872
15,000 +39.1% 2.26 US$33,872
2024-01-08 2024-01-05 S Sale

Chief Operating Officer

Officer
2,412 -15.3%
2.91
US$7,019
2,412 -15.3% 2.91 US$7,019
2024-01-08 2024-01-05 S Sale

General Counsel

Officer
2,412 -6.5%
2.91
US$7,019
2,412 -6.5% 2.91 US$7,019
2024-01-08 2024-01-05 S Sale

Chief Executive Officer

Executive Director
4,820 -3.2%
2.91
US$14,026
4,820 -3.2% 2.91 US$14,026
2023-12-29 2023-12-29 B Purchase Non-Executive Director Large shareholder
163,954 +3.1%
2.38
US$390,211
163,954 +3.1% 2.38 US$390,211
2023-12-29 2023-12-28 B Purchase Non-Executive Director Large shareholder
409,598 +8.5%
2.44
US$999,419
409,598 +8.5% 2.44 US$999,419
2023-12-29 2023-12-27 B Purchase Non-Executive Director Large shareholder
32,134 +0.7%
2.28
US$73,266
32,134 +0.7% 2.28 US$73,266
2023-06-09 2023-06-07 B Purchase

See Below

Officer
11,719 +17.2%
3.44
US$40,308
11,719 +17.2% 3.44 US$40,308
2023-06-09 2023-06-07 B Purchase

See Below

Officer
2,859 +4.4%
3.40
US$9,721
2,859 +4.4% 3.40 US$9,721
2023-06-09 2023-06-07 B Purchase

See Below

Officer
422 +0.6%
3.36
US$1,417
422 +0.6% 3.36 US$1,417
2023-06-06 2023-06-05 B Purchase

See Below

Officer
10,000 +18.2%
3.02
US$30,154
10,000 +18.2% 3.02 US$30,154
2023-06-06 2023-06-05 B Purchase

See Below

Officer
10,000 +22.2%
3.00
US$29,999
10,000 +22.2% 3.00 US$29,999
2023-06-06 2023-06-05 B Purchase

See Below

Officer
10,000 +28.6%
3.00
US$29,997
10,000 +28.6% 3.00 US$29,997
2023-06-06 2023-06-05 B Purchase

See Below

Officer
15,000 +75.0%
3.00
US$45,000
15,000 +75.0% 3.00 US$45,000
2023-06-06 2023-06-02 B Purchase

See Below

Officer
3,418 +20.6%
2.95
US$10,066
3,418 +20.6% 2.95 US$10,066
2023-06-06 2023-06-02 B Purchase

See Below

Officer
6,582 +65.7%
2.86
US$18,823
6,582 +65.7% 2.86 US$18,823
2023-06-06 2023-06-02 B Purchase

See Below

Officer
10,012 +inf%
2.75
US$27,533
10,012 +inf% 2.75 US$27,533
2023-03-30 2023-03-29 B Purchase Non-Executive Director
5,000 +inf%
2.40
US$12,000
5,000 +inf% 2.40 US$12,000
2024-01-08 2023-01-05 S Sale

See Below

Officer
1,208 -1.4%
2.91
US$3,515
1,208 -1.4% 2.91 US$3,515
2024-01-08 2023-01-05 S Sale

Chief Scientific Officer

Officer
2,412 -2.9%
2.91
US$7,019
2,412 -2.9% 2.91 US$7,019
2022-12-30 2022-12-28 B Purchase

Chief Financial Officer

Officer
50,000 +45.5%
2.85
US$142,250
50,000 +45.5% 2.85 US$142,250
2022-12-06 2022-12-02 B Purchase Non-Executive Director
30,000 +360.8%
3.29
US$98,700
30,000 +360.8% 3.29 US$98,700
2022-11-17 2022-11-15 B Purchase

Chief Medical Officer

Officer
5,000 +8.2%
3.29
US$16,442
5,000 +8.2% 3.29 US$16,442
2022-07-01 2022-06-30 B Purchase Non-Executive Director Large shareholder
1,101,362 +29.8%
2.99
US$3,293,072
1,101,362 +29.8% 2.99 US$3,293,072
2022-07-01 2022-06-29 B Purchase Non-Executive Director Large shareholder
270,000 +7.9%
2.99
US$807,300
270,000 +7.9% 2.99 US$807,300
2022-06-24 2022-06-23 S Sale

General Counsel

Officer
2,614 -12.0%
2.69
US$7,032
2,614 -12.0% 2.69 US$7,032
2022-06-24 2022-06-23 S Sale

Chief Operating Officer

Officer
4,193 -41.9%
2.69
US$11,279
4,193 -41.9% 2.69 US$11,279
2022-06-24 2022-06-23 S Sale

Chief Executive Officer

Executive Director
7,960 -5.8%
2.69
US$21,412
7,960 -5.8% 2.69 US$21,412
2022-06-24 2022-06-23 S Sale

Chief Financial Officer

Officer
2,614 -2.3%
2.69
US$7,032
2,614 -2.3% 2.69 US$7,032
2022-06-24 2022-06-23 S Sale

Executive VP, Research

Officer
2,614 -4.3%
2.69
US$7,032
2,614 -4.3% 2.69 US$7,032
2022-04-01 2022-03-31 B Purchase Non-Executive Director
8,000 +2539.7%
13.11
US$104,880
8,000 +2539.7% 13.11 US$104,880
2021-01-27 2021-01-25 B Purchase Non-Executive Director Large shareholder
311,111 +10.0%
22.50
US$6,999,998
311,111 +10.0% 22.50 US$6,999,998
2020-09-22 2020-09-22 B Purchase Non-Executive Director Large shareholder
1,058,824 +51.5%
17.00
US$18,000,008
1,058,824 +51.5% 17.00 US$18,000,008
2020-09-22 2020-09-22 B Purchase Large shareholder
1,058,824 +51.5%
17.00
US$18,000,008
1,058,824 +51.5% 17.00 US$18,000,008
2020-09-22 2020-09-18 B Purchase Large shareholder
750,000 +39.1%
17.00
US$12,750,000
750,000 +39.1% 17.00 US$12,750,000