John G Houston

CIK 1753537 · President and CEO · last filed 2026-06-22

John G Houston is a President and CEO who has filed 32 SEC Form 4 insider transactions across 2 companies since 2018. The most recent filing, for NXTC, was dated Jun 22, 2026. Across all open-market trades the lifetime net is −$17.3M, making them a net seller over the disclosed history. Current disclosed insider exposure totals $9.5M 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

$9.45M

Companies

2

Total Filings

32

Lifetime Open-Market Net

-$17.26M

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
NXTC Director $5.42 $0 7 2026-06-22
ARVN President and CEO 1,152,792 $8.20 $9.45M -$17.26M 23 2026-03-02

Recent Filings

32 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
2026-06-22 NXTC Grant (A) $0 EDGAR
2026-03-02 ARVN Sell (S) −35,297 -$466.2K EDGAR
2026-02-27 ARVN Notice (144) −35,297 -$466.2K EDGAR
2025-06-24 NXTC Grant (A) $0 EDGAR
2025-02-25 ARVN Sell (S) −31,338 -$523.9K EDGAR
2025-02-24 ARVN Notice (144) −31,338 -$523.8K EDGAR
2025-02-18 ARVN Grant (A) +152,000 $0 EDGAR
2024-06-21 NXTC Grant (A) $0 EDGAR
2024-02-27 ARVN Mixed +119,254 -$244.5K EDGAR
2023-06-23 NXTC Grant (A) $0 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.