Home

Steven O Vondran

CIK 1749304 · President and CEO · last filed 2026-03-12

Steven O Vondran is a President and CEO who has filed 43 SEC Form 4 insider transactions across 2 companies since 2018. The most recent filing, for AMT, was dated Mar 12, 2026. Across all open-market trades the lifetime net is −$18.3M, making them a net seller over the disclosed history. Current disclosed insider exposure totals $22.4M 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

$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.
Symbol Role Shares Price Disclosed Exposure Lifetime OM Net Filings Latest Filed
AMT President and CEO 126,329 $174.49 $22.04M -$18.28M 38 2026-03-12
AEE Director 3,597 $109.28 $393.1K $0 2 2026-01-07

Recent Filings

43 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
2026-03-12 AMT Mixed +3,528 -$3.24M EDGAR
2026-03-06 AMT Mixed — -$3.14M EDGAR
2026-03-04 AMT Notice (144) −33,482 -$6.31M EDGAR
2026-02-27 AMT Grant (A) +24,626 $0 EDGAR
2026-01-07 AEE Grant (A) +1,686 $0 EDGAR
2025-03-12 AMT Mixed +2,899 -$2.67M EDGAR
2025-03-03 AMT Grant (A) +16,006 $0 EDGAR
2025-01-07 AEE Grant (A) +1,911 $0 EDGAR
2024-08-06 AMT Mixed — -$2.92M EDGAR
2024-08-02 AMT Notice (144) −21,537 -$4.95M EDGAR
Showing 1–10 of 43
Page 1 of 5
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.