Jon Congleton
CIK 1644975 · Chief Executive Officer · last filed 2026-07-15
"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
$16.53M
Companies
4
Total Filings
50
Lifetime Open-Market Net
-$15.25M
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 |
|---|---|---|---|---|---|---|---|
| MLYS | Chief Executive Officer | 603,621 | $27.38 | $16.53M | -$15.36M | 23 | 2026-07-15 |
| IMUX | Director | — | $14.10 | — | $0 | 2 | 2026-07-07 |
| AVLN | Director | — | $34.56 | — | $0 | 1 | 2026-05-01 |
| ALPINE IMMUNE SCIENCES, INC. (NVLS) Delisted | President and CEO | 5,000 | — | — | $102.8K | 6 | 2016-09-14 |
Recent Filings · Page 4 of 5
50 filingsInsider 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 |
|---|---|---|---|---|---|
| 2024-06-20 | MLYS | Sell (S) | −49,313 | -$592.0K | EDGAR |
| 2024-06-18 | MLYS | Notice (144) | −16,607 | -$199.1K | EDGAR |
| 2024-06-17 | MLYS | Notice (144) | −17,766 | -$217.7K | EDGAR |
| 2024-06-14 | MLYS | Notice (144) | −16,229 | -$203.2K | EDGAR |
| 2024-06-14 | MLYS | Sell (S) | −72,797 | -$924.2K | EDGAR |
| 2024-06-13 | MLYS | Notice (144) | −39,961 | -$509.0K | EDGAR |
| 2024-06-12 | MLYS | Notice (144) | −16,607 | -$212.0K | EDGAR |
| 2024-02-15 | MLYS | Grant (A) | — | $0 | EDGAR |
| 2023-11-27 | MLYS | Buy (P) | +4,250 | $25.4K | EDGAR |
| 2023-09-08 | MLYS | Buy (P) | +2,250 | $27.2K | EDGAR |
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.
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.