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Matthew Blank

CIK 1511516 · Interim CEO · last filed 2026-06-17

Matthew Blank is an Interim CEO who has filed 36 SEC Form 4 insider transactions across 8 companies since 2011. The most recent filing, for AMCX, was dated Jun 17, 2026. Across all open-market trades the lifetime net is −$954.5K, making them a net seller over the disclosed history. Current disclosed insider exposure totals $471.0K 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

$471.0K

Companies

8

Total Filings

36

Lifetime Open-Market Net

-$954.5K

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
AMCX Director 0 $11.85 $0 -$954.5K 8 2026-06-17
CURI Director 168,221 $2.80 $471.0K $0 1 2026-02-06
CuriosityStream Inc. (CURIW) Delisted Director 131,221 $0.01 $1.6K $0 8 2025-05-12
CUMULUS MEDIA INC (CMLS) Delisted Director 101,446 $0.19 $19.2K $0 7 2024-05-07
SPHR Director — $162.49 — $0 2 2020-12-14
MSGS Director — $391.87 — $0 1 2020-04-20
Madison Square Garden Sports Corp. (MSG) Delisted Director — — — $0 1 2019-12-13
Geeknet, Inc (GKNT) Delisted Director 0 — — $0 7 2015-07-17

Recent Filings

36 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
2026-06-17 AMCX Grant (A) — $0 EDGAR
2026-02-06 CURI Mixed +37,000 $0 EDGAR
2025-06-09 AMCX Grant (A) — $0 EDGAR
2025-05-12 CuriosityStream Inc. (CURIW) Delisted Exer (M) +57,500 $0 EDGAR
2025-02-05 CuriosityStream Inc. (CURIW) Delisted Grant (A) — $0 EDGAR
2024-06-13 AMCX Grant (A) — $0 EDGAR
2024-05-10 CuriosityStream Inc. (CURIW) Delisted Grant (A) — $0 EDGAR
2024-05-07 CUMULUS MEDIA INC (CMLS) Delisted Grant (A) +29,069 $0 EDGAR
2024-03-12 CuriosityStream Inc. (CURIW) Delisted Exer (M) +52,669 $0 EDGAR
2023-12-22 AMCX Notice (144) −50,000 -$962.5K EDGAR
Showing 1–10 of 36
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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.