Steven O Vondran
CIK 1749304 · President and CEO · last filed 2026-03-12
"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
$22.44M
Companies
2
Total Filings
43
Lifetime Open-Market Net
-$18.28M
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.
Recent Filings · Page 2 of 5
43 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 |
|---|---|---|---|---|---|
| 2024-03-12 | AMT | Mixed | +3,471 | -$2.29M | EDGAR |
| 2024-03-06 | AMT | Mixed | — | -$389.3K | EDGAR |
| 2024-03-04 | AMT | Notice (144) | −3,265 | -$654.4K | EDGAR |
| 2024-03-01 | AMT | Grant (A) | +15,904 | $0 | EDGAR |
| 2023-03-14 | AMT | Mixed | +3,769 | -$1.28M | EDGAR |
| 2023-02-28 | AMT | Grant (A) | +9,646 | $0 | EDGAR |
| 2022-09-07 | AMT | Tax (F) | −188 | -$47.2K | EDGAR |
| 2022-03-15 | AMT | Tax (F) | −5,609 | -$1.32M | EDGAR |
| 2022-03-14 | AMT | Mixed | +6,421 | -$345.2K | EDGAR |
| 2022-02-28 | AMT | Grant (A) | +10,254 | $0 | 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.