Mark Worthington

CIK 1861464 · GENERAL COUNSEL and CCO · last filed 2026-04-13

Mark Worthington is a GENERAL COUNSEL and CCO who has filed 16 SEC Form 4 insider transactions across 2 companies since 2021. The most recent filing, for LONA, was dated Apr 13, 2026. Across all open-market trades the lifetime net is −$42.9K, making them a net seller over the disclosed history. Current disclosed insider exposure totals $164.5K 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

$164.5K

Companies

2

Total Filings

16

Lifetime Open-Market Net

-$42.9K

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 GENERAL COUNSEL and CCO 19,704 $8.35 $164.5K -$7.1K 2 2026-04-13
LeonaBio, Inc. (ATHA) Delisted General Counsel and CCO 14,854 $6.92 $102.8K -$35.8K 14 2026-01-05

Recent Filings

16 filings
Form 4 transactions across all companies, newest first.
Filed Symbol Action Net Shares Net $ Link
2026-04-13 LONA Grant (A) $0 EDGAR
2026-03-05 LONA Mixed +4,398 -$7.1K EDGAR
2026-01-05 LeonaBio, Inc. (ATHA) Delisted Mixed +2,791 -$6.0K EDGAR
2025-12-29 LeonaBio, Inc. (ATHA) Delisted Grant (A) $0 EDGAR
2025-07-02 LeonaBio, Inc. (ATHA) Delisted Mixed +28,140 -$2.5K EDGAR
2025-03-04 LeonaBio, Inc. (ATHA) Delisted Grant (A) $0 EDGAR
2025-01-03 LeonaBio, Inc. (ATHA) Delisted Mixed +31,808 -$2.8K EDGAR
2024-10-03 LeonaBio, Inc. (ATHA) Delisted Grant (A) $0 EDGAR
2024-09-05 LeonaBio, Inc. (ATHA) Delisted Mixed +17,475 $12.0K EDGAR
2024-02-16 LeonaBio, Inc. (ATHA) Delisted Mixed +15,355 $11.7K EDGAR
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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.