Mark James Litton

CIK: 0001604834

Transaction Breakdown

Open Market Buys (P)0 (0.0%)

High conviction signal

Open Market Sales (S)5 (29.4%)

Position reduction

Option Exercises (M)4 (23.5%)

Derivative conversions

Awards (A)8 (47.1%)

Compensation grants

Other (G, F, J, C, D, …)0 (0.0%)

Gifts, tax withholding, conversions, dispositions to the issuer and other codes

Companies & Roles (1)

LONA

LeonaBio, Inc.

DirectorOfficer

Discretionary Trading P&L

Holdings

Transaction History (17 total)

LONA
LeonaBio, Inc.
Apr 9, 2026
Award(A)
Stock Option (Right to Buy)
Direct
750K shares-
LONA
LeonaBio, Inc.
Mar 4, 2026
Sale(S)
Direct
5.2K shares at avg. $5.37$28K
LONA
LeonaBio, Inc.
Mar 3, 2026
Exercise(M)
Direct
22.3K shares-
ATHA
Athira Pharma, Inc.
Jan 2, 2026
Sale(S)
Direct
2.6K shares at avg. $6.88$18K
ATHA
Athira Pharma, Inc.
Dec 31, 2025
Exercise(M)
Direct
10.8K shares-
ATHA
Athira Pharma, Inc.
Dec 24, 2025
Award(A)
Stock Option (Right to Buy)
Direct
133.5K shares-
ATHA
Athira Pharma, Inc.
Jul 1, 2025
Sale(S)
Direct
25.1K shares at avg. $0.29$7K
ATHA
Athira Pharma, Inc.
Jun 30, 2025
Exercise(M)
Direct
108.3K shares-
ATHA
Athira Pharma, Inc.
Mar 3, 2025
Award(A)
Stock Option (Right to Buy)
Direct
333.8K shares-
ATHA
Athira Pharma, Inc.
Mar 3, 2025
Award(A)
Restricted Stock Units
Direct
222.5K shares-
ATHA
Athira Pharma, Inc.
Jan 2, 2025
Sale(S)
Direct
25.1K shares at avg. $0.56$14K
ATHA
Athira Pharma, Inc.
Dec 31, 2024
Exercise(M)
Direct
108.3K shares-
ATHA
Athira Pharma, Inc.
Oct 3, 2024
Award(A)
Stock Option (Right to Buy)
Direct
325K shares-
ATHA
Athira Pharma, Inc.
Oct 3, 2024
Award(A)
Restricted Stock Units
Direct
325K shares-
ATHA
Athira Pharma, Inc.
Oct 3, 2024
Award(A)
Stock Option (Right to Buy)
Direct
325K shares-
ATHA
Athira Pharma, Inc.
Sep 5, 2024
Sale(S)
Direct
5K shares at avg. $0.57$3K
ATHA
Athira Pharma, Inc.
Sep 3, 2024
Award(A)
Direct
20K shares-

		Type	Shares	Price		Ownership
Apr 9, 2026	LONA LeonaBio, Inc.	Award(A) Stock Option (Right to Buy)	750,000	-	-	Direct
Mar 4, 2026	LONA LeonaBio, Inc.	Sale(S)	5,156	$5.37	$27,688	Direct
Mar 3, 2026	LONA LeonaBio, Inc.	Exercise(M)	22,254	-	$0	Direct
Jan 2, 2026	ATHA Athira Pharma, Inc.	Sale(S)	2,586	$6.88	$17,792	Direct
Dec 31, 2025	ATHA Athira Pharma, Inc.	Exercise(M)	10,834	-	$0	Direct
Dec 24, 2025	ATHA Athira Pharma, Inc.	Award(A) Stock Option (Right to Buy)	133,526	-	-	Direct
Jul 1, 2025	ATHA Athira Pharma, Inc.	Sale(S)	25,123	$0.29	$7,374	Direct
Jun 30, 2025	ATHA Athira Pharma, Inc.	Exercise(M)	108,334	-	-	Direct
Mar 3, 2025	ATHA Athira Pharma, Inc.	Award(A) Stock Option (Right to Buy)	333,815	-	-	Direct
Mar 3, 2025	ATHA Athira Pharma, Inc.	Award(A) Restricted Stock Units	222,543	-	-	Direct
Jan 2, 2025	ATHA Athira Pharma, Inc.	Sale(S)	25,107	$0.56	$14,108	Direct
Dec 31, 2024	ATHA Athira Pharma, Inc.	Exercise(M)	108,333	-	$0	Direct
Oct 3, 2024	ATHA Athira Pharma, Inc.	Award(A) Stock Option (Right to Buy)	325,000	-	-	Direct
Oct 3, 2024	ATHA Athira Pharma, Inc.	Award(A) Restricted Stock Units	325,000	-	-	Direct
Oct 3, 2024	ATHA Athira Pharma, Inc.	Award(A) Stock Option (Right to Buy)	325,000	-	-	Direct
Sep 5, 2024	ATHA Athira Pharma, Inc.	Sale(S)	5,032	$0.57	$2,848	Direct
Sep 3, 2024	ATHA Athira Pharma, Inc.	Award(A)	20,000	-	$0	Direct

1-17 of 17 transactions

About Litton Mark James

Litton Mark James (SEC CIK 0001604834) files insider reports with the SEC as PRESIDENT and CEO of LeonaBio, Inc. (LONA).

Signal8 holds 10 ownership filings by Litton Mark James, all Form 4s, filed between Sep 5, 2024 and Apr 13, 2026. Those filings report 17 transactions, from Sep 3, 2024 to Apr 9, 2026. Signal8's Form 4 history starts in Sep 2024.

The business address on Litton Mark James's filings is in BOTHELL, WA.

Recent filings by Litton Mark James

Apr 9, 2026: Grant or award of LONA derivative securities (Form 4, code A).
Mar 4, 2026: Open-market sale of LONA shares (Form 4, code S).
Mar 3, 2026: Option exercise of LONA shares (Form 4, code M).
Jan 2, 2026: Open-market sale of ATHA shares (Form 4, code S).
Dec 31, 2025: Option exercise of ATHA shares (Form 4, code M).

Other insiders filing for LeonaBio, Inc. (LONA)

How to read Form 4 transaction codes