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Martin Javier San

CIK 1794629 · CHIEF MEDICAL OFFICER · last filed 2026-04-13

Martin Javier San is a CHIEF MEDICAL OFFICER who has filed 19 SEC Form 4 insider transactions across 3 companies since 2020. The most recent filing, for LONA, was dated Apr 13, 2026. Across all open-market trades the lifetime net is −$4.2M, making them a net seller over the disclosed history. Current disclosed insider exposure totals $17.8M across reported positions.

"Disclosed insider exposure" sums this person's most-recently-reported share counts across each company they're an insider in, multiplied by the current underlying price. It is not net worth — it misses retail holdings, private investments, real estate, index funds, and any company where the person isn't an SEC-reporting insider. For informational purposes only.

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Disclosed Exposure

$17.82M

Companies

3

Total Filings

19

Lifetime Open-Market Net

-$4.18M

Holdings By Company

Latest on-record share count from this person's most recent non-derivative Form 4 transaction in each company. Disclosed exposure = shares × current underlying price.
Symbol Role Shares Price Disclosed Exposure Lifetime OM Net Filings Latest Filed
LONA CHIEF MEDICAL OFFICER 17,607 $7.81 $137.5K -$9.2K 2 2026-04-13
LeonaBio, Inc. (ATHA) Delisted CHIEF MEDICAL OFFICER 11,833 $6.92 $81.9K -$20.6K 7 2026-01-05
ARWR Chief Medical Officer 206,000 $85.83 $17.68M -$4.15M 6 2024-01-08

Recent Filings

19 filings
Insider activity across all companies, newest first. Form 4 rows are post-trade confirmations (buys, sells, grants, exercises). Notice (144) rows are pre-trade notices of intent to sell restricted or control stock under Rule 144 — they may not all execute. Compare adjacent dates to see which notices became actual sales.
Filed Symbol Action Net Shares Net $ Link
2026-04-13 LONA Grant (A) — $0 EDGAR
2026-03-05 LONA Mixed +5,698 -$9.2K EDGAR
2026-01-05 LeonaBio, Inc. (ATHA) Delisted Mixed +3,023 -$11.3K EDGAR
2025-12-29 LeonaBio, Inc. (ATHA) Delisted Grant (A) — $0 EDGAR
2025-07-02 LeonaBio, Inc. (ATHA) Delisted Mixed +35,824 -$3.2K EDGAR
2025-07-01 LONA Notice (144) −10,842 -$3.2K EDGAR
2025-03-04 LeonaBio, Inc. (ATHA) Delisted Grant (A) — $0 EDGAR
2025-01-03 LeonaBio, Inc. (ATHA) Delisted Mixed +35,841 -$6.1K EDGAR
2025-01-02 LONA Notice (144) −10,826 -$6.1K EDGAR
2024-10-03 LeonaBio, Inc. (ATHA) Delisted Grant (A) — $0 EDGAR
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Form 4 codes: P = open-market purchase · S = open-market sale · A = grant/award · M = option exercise · F = tax withholding at vest · G = bona-fide gift · D = disposition to issuer · J = other (see filing footnote). Only P / S codes carry directional signal.
Notice (144 / 144/A): Form 144 is a notice of intent to sell restricted/control stock under Rule 144, filed before the sale; 144/A is an amendment. Many notices are pre-scheduled under Rule 10b5-1 plans. A Form 4 with code S typically follows within a few days when the planned sale executes; missing follow-up Form 4s suggest the notice was cancelled or modified.