Thomas J. Healy

CIK 1825486 · Chief Executive Officer · last filed 2026-05-21

Thomas J. Healy is a Chief Executive Officer who has filed 37 SEC Form 4 insider transactions across 2 companies since 2020. The most recent filing, for HYLN, was dated May 21, 2026. Across all open-market trades the lifetime net is −$17.4M, making them a net seller over the disclosed history. Current disclosed insider exposure totals $138.8M 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

$138.78M

Companies

2

Total Filings

37

Lifetime Open-Market Net

-$17.42M

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
HYLN Chief Executive Officer 35,312,262 $3.93 $138.78M -$17.42M 33 2026-05-21
Hyliion Holdings Corp. (HYLN.WS) Delisted Chief Executive Officer 34,972,856 $0 1 2020-10-05

Recent Filings

37 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
2026-05-21 HYLN Other (J) −28,026 -$113.2K EDGAR
2026-05-19 HYLN Notice (144) −30,000 -$125.0K EDGAR
2026-03-04 HYLN Other (J) −58,202 -$119.3K EDGAR
2026-02-13 HYLN Grant (A) +296,342 $607.5K EDGAR
2025-12-15 HYLN Other (J) −134,963 -$261.8K EDGAR
2025-12-12 HYLN Notice (144) −220,000 -$432.0K EDGAR
2025-11-18 HYLN Other (J) −159,776 -$265.2K EDGAR
2025-11-18 HYLN Tax (F) $0 EDGAR
2025-11-17 HYLN Notice (144) −159,776 -$265.0K EDGAR
2025-08-25 HYLN Tax (F) −61,603 -$109.0K EDGAR
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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.