Quick Takeaways
- LONA - LeonaBio, Inc. has 18 insiders with reported activity on this page.
- Net insider value flow over the last year: -$115,829.
- Recent transaction rows are available for direct filing-level review.
Insider Transactions Reported by 18 Insiders of LeonaBio, Inc.
- Symbol
- LONA on Nasdaq
- Location
- Bothell, WA
What Changed
- Buy value: ; sell value: $115,828.
- Net share flow: -72,662.
Why This Matters
- This page gives a plain-language issuer insider context before you inspect transaction-level evidence.
- Use the filing links below to verify timestamps, codes, and ownership impacts directly from SEC forms.
Source Evidence
Filed on Form 4
See Original Filing
Issuer insider activity is sourced from SEC Forms 3, 4, and 5.
Insider trading overview
Last 12 monthsNet insider flow leans to selling over the last 12 months. Net value: -$115,829.
Buys
$0
Shares: 0
Insiders: 0
Sells
$115,829
Shares: 72,662
Insiders: 5
Net
-$115,829
Shares: -72,662
Insiders: -5
| Window (months) | Buy shares | Sell shares | Buy $ | Sell $ | Net $ |
|---|---|---|---|---|---|
| 0-3 | 0 | 10,469 | $0 | $56,219 | -$56,219 |
| 3-6 | 0 | 6,279 | $0 | $43,200 | -$43,200 |
| 6-9 | 0 | 0 | $0 | $0 | $0 |
| 9-12 | 0 | 55,914 | $0 | $16,411 | -$16,411 |
LeonaBio, Inc. executives and other stock owners filed with the SEC include:
| Name | Relationship | Holdings Value | Past Year Net Change | Change % | Valuation | Report Date |
|---|---|---|---|---|---|---|
| PERCEPTIVE ADVISORS LLC | Director, 10%+ Owner | $17,718,931 | Mixed | 23 Dec 2025 | ||
| Mark James Litton | PRESIDENT and CEO, Director | $445,121 | -$52,853 | -11% | Mixed | 09 Apr 2026 |
| Hans Moebius | Chief Medical Officer | $266,213 | Mixed | 04 Jan 2024 | ||
| Kelly A. Romano | Director | $194,951 | Filing P/S | 09 Apr 2026 | ||
| Kevin Church | Chief Scientific Officer | $168,112 | -$15,827 | -8.6% | Mixed | 09 Apr 2026 |
| Mark Worthington | GENERAL COUNSEL and CCO | $130,855 | -$15,661 | -11% | Mixed | 09 Apr 2026 |
| Javier San Martin | Chief Medical Officer | $126,995 | -$23,729 | -16% | Mixed | 09 Apr 2026 |
| Robert Renninger | Chief Financial Officer | $107,033 | -$7,759 | -6.8% | Mixed | 09 Apr 2026 |
| Andrew Gengos | CFO and Chief Business Officer | $55,203 | Filing P/S | 03 Sep 2024 | ||
| Rachel Lenington | COO and CDO | $11,812 | Filing P/S | 03 Sep 2024 | ||
| Glenna Mileson | Chief Financial Officer | Mixed | 19 Jan 2023 | |||
| Tadataka Yamada | Director | Mixed | 28 May 2021 | |||
| Barbara Kosacz | Director | Mixed | 09 Apr 2026 | |||
| Grant Pickering | Director | Mixed | 09 Apr 2026 | |||
| Michael A. Panzara | Director | Mixed | 09 Apr 2026 | |||
| Joseph Edelman | Director | Mixed | 09 Apr 2026 | |||
| John M. Fluke Jr. | Director | Mixed | 09 Apr 2026 | |||
| James A. Johnson | Director | Mixed | 09 Apr 2026 |
Top shareholders of LeonaBio, Inc. (13F + 13D/G + 3/4/5)
Grouped by holder across the latest SEC ownership disclosures. Ownership % is shown only when it is directly reported or safely comparable across share classes.
Methodology: rows are grouped by holder and ranked by the holder's primary source value. — indicates unavailable or non-comparable values; "mixed-class rows" means the latest filing spans non-comparable classes.
| Holder | Source | Role / Reporting | Ownership % | Shares | Holdings Value | 12M Net Δ | As of | Details |
|---|---|---|---|---|---|---|---|---|
| PERCEPTIVE ADVISORS LLC |
3/4/5
13D/G
13F
|
Director, 10%+ Owner · Company |
20%
from 13D/G
|
8,292,785
mixed-class rows
|
$17,718,931 | — | 23 Dec 2025 | |
| ACORN CAPITAL ADVISORS, LLC |
13F
|
Company |
13%
|
501,739
|
$3,798,164 | — | 31 Dec 2025 | |
| Commodore Capital LP |
13F
|
Company |
12%
|
464,398
|
$3,515,493 | — | 31 Dec 2025 | |
| NEA Management Company, LLC |
13F
|
Company |
12%
|
464,398
|
$3,515,493 | — | 31 Dec 2025 | |
| TCG Crossover Management, LLC |
13F
|
Company |
12%
|
464,398
|
$3,348,507 | — | 31 Dec 2025 | |
| Kalehua Capital Management LLC |
13F
|
Company |
9.9%
|
393,701
|
$2,980,317 | — | 31 Dec 2025 | |
| Spruce Street Capital LP |
13F
|
Company |
9.9%
|
393,701
|
$2,980,317 | — | 31 Dec 2025 | |
| ADAR1 Capital Management, LLC |
13F
|
Company |
9.9%
|
393,701
|
$2,890,907 | — | 31 Dec 2025 | |
| MILLENNIUM MANAGEMENT LLC |
13F
|
Company |
8.1%
|
324,445
|
$2,456,049 | — | 31 Dec 2025 | |
| ACORN BIOVENTURES, L.P. |
13D/G
|
Anders Hove |
6.2%
|
596,068
|
$1,345,504 | +$212,929 | 06 Jan 2026 | |
| VANGUARD GROUP INC |
13F
|
Company |
3.9%
|
153,789
|
$1,164,183 | — | 31 Dec 2025 | |
| Propel Bio Management, LLC |
13F
|
Company |
3.7%
|
149,279
|
$1,130,042 | — | 31 Dec 2025 | |
| Simplify Asset Management Inc. |
13F
|
Company |
3.7%
|
149,279
|
$1,130,042 | — | 31 Dec 2025 | |
| Seven Fleet Capital Management LP |
13F
|
Company |
3.2%
|
127,951
|
$968,589 | — | 31 Dec 2025 | |
| Baselake Partners, LP |
13D/G
|
— |
1.9%
|
75,789
|
$573,723 | -$921,208 | 31 Dec 2025 | |
| RENAISSANCE TECHNOLOGIES LLC |
13F
|
Company |
1.9%
|
75,147
|
$568,863 | — | 31 Dec 2025 | |
| Mark James Litton |
3/4/5
|
PRESIDENT and CEO, Director |
—
mixed-class rows
|
809,894
mixed-class rows
|
$445,121 | -$52,853 | 09 Apr 2026 | |
| BlackRock, Inc. |
13F
|
Company |
0.94%
|
37,643
|
$284,958 | — | 31 Dec 2025 | |
| ACADIAN ASSET MANAGEMENT LLC |
13F
|
Company |
0.94%
|
37,482
|
$282,000 | — | 31 Dec 2025 | |
| Pathstone Holdings, LLC |
13F
|
Company |
0.97%
|
38,606
|
$278,903 | — | 31 Dec 2025 | |
| Hans Moebius |
3/4/5
|
Chief Medical Officer |
—
class O/S missing
|
91,482
|
$266,213 | — | 04 Jan 2024 | |
| BANK OF AMERICA CORP /DE/ |
13F
|
Company |
0.82%
|
32,840
|
$248,599 | — | 31 Dec 2025 | |
| GEODE CAPITAL MANAGEMENT, LLC |
13F
|
Company |
0.78%
|
30,944
|
$234,308 | — | 31 Dec 2025 | |
| Kelly A. Romano |
3/4/5
|
Director |
—
mixed-class rows
|
108,715
mixed-class rows
|
$194,951 | — | 09 Apr 2026 | |
| Kevin Church |
3/4/5
|
CHIEF SCIENTIFIC OFFICER |
—
mixed-class rows
|
325,178
mixed-class rows
|
$168,112 | -$15,827 | 09 Apr 2026 | |
| Laird Norton Wetherby Trust Company, LLC |
13F
|
Company |
0.55%
|
21,818
|
$165,162 | — | 31 Dec 2025 | |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP |
13F
|
Company |
0.52%
|
20,936
|
$158,486 | — | 31 Dec 2025 | |
| Mark Worthington |
3/4/5
|
GENERAL COUNSEL and CCO |
—
mixed-class rows
|
318,376
mixed-class rows
|
$130,855 | -$15,661 | 09 Apr 2026 | |
| Javier San Martin |
3/4/5
|
CHIEF MEDICAL OFFICER |
—
mixed-class rows
|
365,887
mixed-class rows
|
$126,995 | -$23,729 | 09 Apr 2026 | |
| Robert Renninger |
3/4/5
|
CHIEF FINANCIAL OFFICER |
—
mixed-class rows
|
315,851
mixed-class rows
|
$107,033 | -$7,759 | 09 Apr 2026 | |
| JANE STREET GROUP, LLC |
13F
|
Company |
0.33%
|
13,186
|
$99,818 | — | 31 Dec 2025 | |
| TWO SIGMA INVESTMENTS, LP |
13F
|
Company |
0.27%
|
10,746
|
$81,347 | — | 31 Dec 2025 | |
| STATE STREET CORP |
13F
|
Company |
0.27%
|
10,737
|
$81,279 | — | 31 Dec 2025 | |
| NORTHERN TRUST CORP |
13F
|
Company |
0.26%
|
10,461
|
$79,190 | — | 31 Dec 2025 | |
| Scientech Research LLC |
13F
|
Company |
0.25%
|
10,108
|
$76,518 | — | 31 Dec 2025 | |
| OSAIC HOLDINGS, INC. |
13F
|
Company |
0.23%
|
9,210
|
$69,719 | — | 31 Dec 2025 | |
| Steven Michael Oliveira |
13D/G
|
Oliveira Steven Michael |
4.1%
|
161,218
|
$69,324 | -$788,375 | 01 Oct 2025 | |
| Andrew Gengos |
3/4/5
|
CFO and Chief Business Officer |
—
mixed-class rows
|
377,532
mixed-class rows
|
$55,203 | — | 03 Sep 2024 | |
| UBS Group AG |
13F
|
Company |
0.08%
|
3,388
|
$25,647 | — | 31 Dec 2025 | |
| Rachel Lenington |
3/4/5
|
COO and CDO |
—
mixed-class rows
|
320,870
mixed-class rows
|
$11,812 | — | 03 Sep 2024 | |
| MORGAN STANLEY |
13F
|
Company |
0.01%
|
470
|
$3,558 | — | 31 Dec 2025 | |
| ROYAL BANK OF CANADA |
13F
|
Company |
0.01%
|
334
|
$3,000 | — | 31 Dec 2025 | |
| Tower Research Capital LLC (TRC) |
13F
|
Company |
0.01%
|
379
|
$2,869 | — | 31 Dec 2025 | |
| American Capital Advisory, LLC |
13F
|
Company |
0.01%
|
200
|
$1,514 | — | 31 Dec 2025 | |
| ROTHSCHILD INVESTMENT LLC |
13F
|
Company |
0%
|
150
|
$1,136 | — | 31 Dec 2025 | |
| McIlrath & Eck, LLC |
13F
|
Company |
0%
|
82
|
$621 | — | 31 Dec 2025 | |
| US BANCORP \DE\ |
13F
|
Company |
0%
|
81
|
$613 | — | 31 Dec 2025 | |
| GROUP ONE TRADING LLC |
13F
|
Company |
0%
|
69
|
$522 | — | 31 Dec 2025 | |
| Global Retirement Partners, LLC |
13F
|
Company |
0%
|
52
|
$393 | — | 31 Dec 2025 | |
| NewEdge Advisors, LLC |
13F
|
Company |
0%
|
50
|
$378 | — | 31 Dec 2025 |
Recent Insider Transactions by Companies or Individuals for LeonaBio, Inc.
Showing up to 300 most recent insider transactions from the last 12 months.
| Insider | Symbol | Class | Transaction | % | Value $ | * Price $ | Shares | Shares Owned | Date | Ownership |
|---|---|---|---|---|---|---|---|---|---|---|
| Michael A. Panzara | LONA | Stock Option (Right to Buy) | Award | 28,000 | 28,000 | 09 Apr 2026 | Direct | |||
| Kevin Church | LONA | Stock Option (Right to Buy) | Award | 300,000 | 300,000 | 09 Apr 2026 | Direct | |||
| Barbara Kosacz | LONA | Stock Option (Right to Buy) | Award | 28,000 | 28,000 | 09 Apr 2026 | Direct | |||
| Grant Pickering | LONA | Stock Option (Right to Buy) | Award | 28,000 | 28,000 | 09 Apr 2026 | Direct | |||
| Kelly A. Romano | LONA | Stock Option (Right to Buy) | Award | 28,000 | 28,000 | 09 Apr 2026 | Direct | |||
| James A. Johnson | LONA | Stock Option (Right to Buy) | Award | 28,000 | 28,000 | 09 Apr 2026 | Direct | |||
| Joseph Edelman | LONA | Stock Option (Right to Buy) | Award | 28,000 | 28,000 | 09 Apr 2026 | Direct | |||
| Javier San Martin | LONA | Stock Option (Right to Buy) | Award | 350,000 | 350,000 | 09 Apr 2026 | Direct | |||
| John M. Fluke Jr. | LONA | Stock Option (Right to Buy) | Award | 28,000 | 28,000 | 09 Apr 2026 | Direct | |||
| Mark Worthington | LONA | Stock Option (Right to Buy) | Award | 300,000 | 300,000 | 09 Apr 2026 | Direct | |||
| Robert Renninger | LONA | Stock Option (Right to Buy) | Award | 300,000 | 300,000 | 09 Apr 2026 | Direct | |||
| Mark James Litton | LONA | Stock Option (Right to Buy) | Award | 750,000 | 750,000 | 09 Apr 2026 | Direct | |||
| Mark James Litton | LONA | Common Stock | Sale | -8.17% | $27,688 | $5.37 | -5,156 | 57,926 | 04 Mar 2026 | Direct |
| Robert Renninger | LONA | Common Stock | Sale | -5.41% | $4,865 | $5.37 | -906 | 15,851 | 04 Mar 2026 | Direct |
| Mark Worthington | LONA | Common Stock | Sale | -6.74% | $7,131 | $5.37 | -1,328 | 18,376 | 04 Mar 2026 | Direct |
| Kevin Church | LONA | Common Stock | Sale | -5.12% | $7,298 | $5.37 | -1,359 | 25,178 | 04 Mar 2026 | Direct |
| Javier San Martin | LONA | Common Stock | Sale | -9.77% | $9,236 | $5.37 | -1,720 | 15,887 | 04 Mar 2026 | Direct |
| Mark James Litton | LONA | Common Stock | Options Exercise | 54.5% | 22,254 | 63,082 | 03 Mar 2026 | Direct | ||
| Mark James Litton | LONA | Restricted Stock Units | Options Exercise | -100% | -22,254 | 0 | 03 Mar 2026 | Direct | ||
| Robert Renninger | LONA | Common Stock | Options Exercise | 30.3% | 3,900 | 16,757 | 03 Mar 2026 | Direct | ||
| Robert Renninger | LONA | Restricted Stock Units | Options Exercise | -100% | -3,900 | 0 | 03 Mar 2026 | Direct | ||
| Mark Worthington | LONA | Common Stock | Options Exercise | 41% | 5,726 | 19,704 | 03 Mar 2026 | Direct | ||
| Mark Worthington | LONA | Restricted Stock Units | Options Exercise | -100% | -5,726 | 0 | 03 Mar 2026 | Direct | ||
| Kevin Church | LONA | Common Stock | Options Exercise | 28.3% | 5,856 | 26,537 | 03 Mar 2026 | Direct | ||
| Kevin Church | LONA | Restricted Stock Units | Options Exercise | -100% | -5,856 | 0 | 03 Mar 2026 | Direct | ||
| Javier San Martin | LONA | Common Stock | Options Exercise | 72.8% | 7,418 | 17,607 | 03 Mar 2026 | Direct | ||
| Javier San Martin | LONA | Restricted Stock Units | Options Exercise | -100% | -7,418 | 0 | 03 Mar 2026 | Direct | ||
| Javier San Martin | ATHA | Common Stock | Sale | -13.9% | $11,311 | $6.88 | -1,644 | 10,189 | 02 Jan 2026 | Direct |
| Mark James Litton | ATHA | Common Stock | Sale | -5.96% | $17,792 | $6.88 | -2,586 | 40,828 | 02 Jan 2026 | Direct |
| Robert Renninger | ATHA | Common Stock | Sale | -2.26% | $2,043 | $6.88 | -297 | 12,857 | 02 Jan 2026 | Direct |
| Kevin Church | ATHA | Common Stock | Sale | -4.06% | $6,027 | $6.88 | -876 | 20,681 | 02 Jan 2026 | Direct |
| Mark Worthington | ATHA | Common Stock | Sale | -5.9% | $6,027 | $6.88 | -876 | 13,978 | 02 Jan 2026 | Direct |
| Javier San Martin | ATHA | Common Stock | Options Exercise | 65.1% | 4,667 | 11,833 | 31 Dec 2025 | Direct | ||
| Javier San Martin | ATHA | Restricted Stock Units | Options Exercise | -100% | -4,667 | 0 | 31 Dec 2025 | Direct | ||
| Mark James Litton | ATHA | Common Stock | Options Exercise | 33.2% | 10,834 | 43,414 | 31 Dec 2025 | Direct | ||
| Mark James Litton | ATHA | Restricted Stock Units | Options Exercise | -100% | -10,834 | 0 | 31 Dec 2025 | Direct | ||
| Robert Renninger | ATHA | Common Stock | Options Exercise | 10.4% | 1,236 | 13,154 | 31 Dec 2025 | Direct | ||
| Robert Renninger | ATHA | Restricted Stock Units | Options Exercise | -100% | -1,236 | 0 | 31 Dec 2025 | Direct | ||
| Kevin Church | ATHA | Common Stock | Options Exercise | 20.5% | 3,667 | 21,557 | 31 Dec 2025 | Direct | ||
| Kevin Church | ATHA | Restricted Stock Units | Options Exercise | -100% | -3,667 | 0 | 31 Dec 2025 | Direct | ||
| Mark Worthington | ATHA | Common Stock | Options Exercise | 32.8% | 3,667 | 14,854 | 31 Dec 2025 | Direct | ||
| Mark Worthington | ATHA | Restricted Stock Units | Options Exercise | -100% | -3,667 | 0 | 31 Dec 2025 | Direct | ||
| Robert Renninger | ATHA | Stock Option (Right to Buy) | Award | 34,358 | 34,358 | 24 Dec 2025 | Direct | |||
| Mark James Litton | ATHA | Stock Option (Right to Buy) | Award | 133,526 | 133,526 | 24 Dec 2025 | Direct | |||
| Kevin Church | ATHA | Stock Option (Right to Buy) | Award | 35,138 | 35,138 | 24 Dec 2025 | Direct | |||
| Javier San Martin | ATHA | Stock Option (Right to Buy) | Award | 44,508 | 44,508 | 24 Dec 2025 | Direct | |||
| Mark Worthington | ATHA | Stock Option (Right to Buy) | Award | 34,358 | 34,358 | 24 Dec 2025 | Direct | |||
| Perceptive Advisors Llc | ATHA | Common Stock | Award | 626.5% | 1,319,026 | 1,529,566 | 23 Dec 2025 | See Footnotes | ||
| Perceptive Advisors Llc | ATHA | Series B Warrant (right to buy) | Award | 4,724,408 | 3,543,307 | 23 Dec 2025 | See Footnotes | |||
| Perceptive Advisors Llc | ATHA | Series A Warrant (right to buy) | Award | 5,118,109 | 3,838,583 | 23 Dec 2025 | See Footnotes |
* An asterisk sign (*) next to the price indicates that the price is likely invalid.