Steven R Mitchell

CIK 1610279 · last filed 2026-07-07

"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

$271.18M

Companies

3

Total Filings

47

Lifetime Open-Market Net

-$3.35M

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
ALKT Director 2,619,637 $18.17 $47.60M $0 28 2026-07-07
ASPN Director 156,898 $4.39 $688.8K $357.5K 14 2026-05-14
STEP Director 4,994,330 $44.63 $222.90M -$3.71M 4 2026-02-25

Recent Filings · Page 2 of 5

47 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
2025-04-07 ALKT Grant (A) +325 $0 EDGAR
2025-01-07 ALKT Grant (A) +219 $0 EDGAR
2024-10-08 ALKT Grant (A) +272 $0 EDGAR
2024-07-09 ALKT Grant (A) +311 $0 EDGAR
2024-06-12 STEP Sell (S) −27,500 -$1.22M EDGAR
2024-06-12 STEP Sell (S) −35,000 -$1.53M EDGAR
2024-06-11 STEP Notice (144) −27,500 -$1.22M EDGAR
2024-05-31 ASPN Grant (A) +1,898 $0 EDGAR
2024-05-17 ALKT Grant (A) +6,853 $0 EDGAR
2024-04-08 ALKT Grant (A) +354 $0 EDGAR
Showing 1120 of 47
Page 2 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.