Jon Congleton

CIK 1644975 · Chief Executive Officer · last filed 2026-05-01

Jon Congleton is a Chief Executive Officer who has filed 29 SEC Form 4 insider transactions across 3 companies since 2015. The most recent filing, for AVLN, was dated May 1, 2026. Across all open-market trades the lifetime net is −$15.0M, making them a net seller over the disclosed history. Current disclosed insider exposure totals $16.3M 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.

Loading insider history…
Disclosed Exposure

$16.28M

Companies

3

Total Filings

29

Lifetime Open-Market Net

-$14.96M

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
AVLN Director $0 1 2026-05-01
MLYS Chief Executive Officer 689,321 $23.62 $16.28M -$15.07M 22 2026-04-15
ALPINE IMMUNE SCIENCES, INC. (NVLS) Delisted President and CEO 20,000 $102.8K 6 2016-09-14

Recent Filings

29 filings
Form 4 transactions across all companies, newest first.
Filed Symbol Action Net Shares Net $ Link
2026-05-01 AVLN Grant (A) $0 EDGAR
2026-04-15 MLYS Sell (S) −15,730 -$422.0K EDGAR
2026-04-02 MLYS Sell (S) −75,000 -$1.97M EDGAR
2026-02-20 MLYS Grant (A) +140,900 $0 EDGAR
2026-01-13 MLYS Sell (S) −16,236 -$529.6K EDGAR
2025-11-24 MLYS Exer (M) +24,082 $13.0K EDGAR
2025-11-13 MLYS Sell (S) −200,000 -$9.09M EDGAR
2025-10-15 MLYS Sell (S) −15,100 -$644.3K EDGAR
2025-07-15 MLYS Sell (S) −15,884 -$230.4K EDGAR
2025-04-15 MLYS Sell (S) −15,319 -$186.8K EDGAR
Showing 110 of 29
Page 1 of 3
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.