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Who

David J. Portman

10% owner

Company insider

Files Form 4 as: 10% owner, LeonaBio.

Every Form 4 they filed

In numbers

Trades disclosed: 2
Buys: 1
Sells: 0
Bought: $0
Sold: $0
Held for review: 1 trade, left out of Bought and Sold
Companies: 1
Companies where not an officer: 1
First trade: 26 Oct 2026
Last trade: 26 Oct 2026
Last filed: 28 Oct 2026

Companies traded

Everywhere else they filed: board seats, 10% stakes, other companies

LONA LeonaBio10% owner · Biotechnology · last 26 Oct 20261 buy · 0 sells

Activity over time

Not enough dated trades to draw.

Every trade

Traded	Company	What	Amount
26 Oct 2026filed 28 Oct 2026	LONA LeonaBioBiotechnology	SEC FORM 4 Bought	held for review3,149,470	filing
26 Oct 2026filed 28 Oct 2026	LONA LeonaBiooption or derivative · Biotechnology	SEC FORM 4 Code P	$17.3B5,502,402 at $3,149.47	filing

News

Athira Pharma (NASDAQ:LONA) Upgraded at Wall Street ZenLONA · dailypolitical.com · 20 Oct 2026

0 headlines in the last 90 days name David J. Portman; 1 article from the last 14 days about the 1 company they traded most, at most three about any one of them.

Sectors

Health Care1

Buys in green, sells in red, by the company’s sector.

Related people

PERCEPTIVE ADVISORS LLCDirector and 10% owner · Director and 10% owner at LeonaBio, filing Form 4 there in the last year

Joseph EdelmanDirector · Director and 10% owner at LeonaBio, filing Form 4 there in the last year

Grant PickeringChief Executive Officer · Director at LeonaBio, filing Form 4 there in the last year

Natalie C. HollesDirector · Director at LeonaBio, filing Form 4 there in the last year

Kelly A. RomanoDirector · Director at LeonaBio, filing Form 4 there in the last year