LeonaBio, Inc. (LONA) IPO — S-1 Filing, Stock & Insider Activity

LeonaBio, Inc. IPO — Status & S-1 Filing

Ticker: LONA
Status: Registered — S-1 filed with the SEC
S-1 filed: 2026-03-31
Expected price range: not yet disclosed (set in a later S-1/A or pricing amendment)
SEC CIK: 0001620463 · View the S-1 on SEC EDGAR →

Track every registration update on the InsiderAlpha IPO tracker.

Updated Jul 16, 2026 · Last SEC filing 2026-07-10

LeonaBio, Inc. (LONA) has filed 14 SEC Form 4 insider transactions in the last 90 days, with the most recent on 2026-07-10. 2 Form 8-K material event filings were reported by LONA in the last 90 days. InsiderAlpha tracks every LONA SEC filing — Form 4, Form 144, and 8-K — in real time, including Rule 10b5-1 plan detection.

About LeonaBio, Inc. (LONA)

SEC CIK	0001620463

90-Day SEC Filing Activity

Form 4 filings (90d)	14
Form 8-K filings (90d)	2
Latest Form 4 filing	2026-07-10

Recent LONA Insider Transactions (Form 4)

Date	Insider	Role	Transaction	Shares	Price	Value	Filing
2026-03-04	Litton Mark James	PRESIDENT and CEO	S — Open-market sale	5.2K	$5.37	$28K	SEC
2026-03-04	San Martin Javier	CHIEF MEDICAL OFFICER	S — Open-market sale	1.7K	$5.37	$9K	SEC
2026-03-04	CHURCH KEVIN	CHIEF SCIENTIFIC OFFICER	S — Open-market sale	1.4K	$5.37	$7K	SEC
2026-03-04	Worthington Mark	GENERAL COUNSEL and CCO	S — Open-market sale	1.3K	$5.37	$7K	SEC
2026-03-04	Renninger Robert	CHIEF FINANCIAL OFFICER	S — Open-market sale	906	$5.37	$5K	SEC
2026-03-03	Renninger Robert	CHIEF FINANCIAL OFFICER	M — Option exercise	3.9K	$0.00	—	SEC
2026-03-03	Worthington Mark	GENERAL COUNSEL and CCO	M — Option exercise	5.7K	$0.00	—	SEC
2026-03-03	San Martin Javier	CHIEF MEDICAL OFFICER	M — Option exercise	7.4K	$0.00	—	SEC
2026-03-03	Litton Mark James	PRESIDENT and CEO	M — Option exercise	22.3K	$0.00	—	SEC
2026-03-03	CHURCH KEVIN	CHIEF SCIENTIFIC OFFICER	M — Option exercise	5.9K	$0.00	—	SEC
2025-12-23	PERCEPTIVE ADVISORS LLC	Director	A — Grant or award	989.3K	$6.35	$6.28M	SEC
2025-12-23	PERCEPTIVE ADVISORS LLC	Director	A — Grant or award	329.8K	$6.35	$2.09M	SEC
2025-07-01	Litton Mark James	President and CEO	S — Open-market sale	25.1K	$0.29	$7K	SEC
2025-07-01	Worthington Mark	General Counsel and CCO	S — Open-market sale	8.5K	$0.29	$3K	SEC
2025-07-01	CHURCH KEVIN	CHIEF SCIENTIFIC OFFICER	S — Open-market sale	8.5K	$0.29	$3K	SEC

All transactions sourced from SEC EDGAR Form 4 filings for LeonaBio, Inc. (LONA). Updated in real time as new filings are submitted to the SEC.

Most-Active LONA Insiders — Last 90 Days

Insider	Form 4 filings	Total transaction value
Callori Fred	2	—
Holles Natalie C.	2	—
Silverman Peter B.	2	—
PERCEPTIVE ADVISORS LLC	2	—
Romano Kelly A	1	—

Recent LONA Form 8-K Material Events

2026-06-23 — Item 5.07 [SEC]
2026-05-07 — Item 2.02, 7.01, 9.01 [SEC]
2026-03-31 — Item 2.01, 9.01 · Acquisition · neutral [SEC]
This is Amendment No. 2 to an 8-K/A filing by LeonaBio, Inc. (formerly Athira Pharma, Inc.) amending its December 18, 2025 disclosure of the Sermonix Transaction. The amendment reports the transaction under Item 2.01 (Completion of Acquisition or Disposition) and includes a waive
2026-03-26 — Item 2.02, 7.01, 9.01 · Earnings · neutral [SEC]
LeonaBio, Inc. (formerly Athira Pharma) issued a press release on March 26, 2026 reporting financial results for the year ended December 31, 2025, along with an investor presentation posted to its investor relations website. The filing contains standard financial results reportin
2026-03-19 — Item 5.02, 5.07, 8.01, 9.01 · Leadership · neutral [SEC]
LeonaBio, Inc. held a special stockholder meeting on March 18, 2026, where shareholders approved the company's 2026 Equity Incentive Plan with approximately 79.63% of shares voting in favor. The new plan replaces the prior 2020 Equity Incentive Plan and authorizes up to 5,700,000

Recent Insider Filings

2026-07-10 — PERCEPTIVE ADVISORS LLC (Insider)
2026-07-09 — PERCEPTIVE ADVISORS LLC (Insider)
2026-06-24 — Callori Fred (Insider)
2026-06-24 — Holles Natalie C. (Insider)
2026-06-24 — Silverman Peter B. (Insider)

Form 4 Transaction Code Reference

SEC Form 4 transactions are reported with a one-letter code indicating the type of transaction. Common codes you'll see in LONA insider filings:

P	Open-market purchase by the insider
S	Open-market sale by the insider
A	Grant, award, or other acquisition from the issuer
M	Exercise or conversion of derivative security (e.g. options)
F	Payment of exercise price or tax liability via share withholding
G	Bona-fide gift of securities
D	Disposition to the issuer (e.g. share buyback participation)
J	Other acquisition or disposition
X	Exercise of in-the-money or at-the-money derivative security
C	Conversion of derivative security
V	Transaction voluntarily reported earlier than required

LONA Insider Trading — FAQ

What is the latest insider trade for LONA?: LeonaBio, Inc. (LONA) had 14 insider filings in the last 90 days, with the most recent on 2026-07-10. InsiderAlpha tracks every Form 4, 10-K, 10-Q, and 8-K filing in real time.
How many insiders are buying LONA stock?: 0 insider purchases of LONA were filed in the last 90 days.
How many insiders are selling LONA stock?: 0 insider sales of LONA were filed in the last 90 days.
Where can I see LONA SEC filings (Form 4, 10-K, 10-Q, 8-K)?: InsiderAlpha aggregates every LONA SEC filing — Form 4 insider transactions, 10-K and 10-Q quarterly reports, and 8-K material event disclosures — in one timeline.

Learn More

Open the live LONA dashboard on InsiderAlpha for real-time alerts, charting, and full historical filing search.