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Mast Capital Management, LLC

CIK 1429074 · last filed 2019-05-24

Mast Capital Management, LLC is a corporate insider who has filed 56 SEC Form 4 insider transactions across 8 companies since 2008. The most recent filing shows the insider sold $4.7M of GECCM on May 24, 2019. Across all open-market trades the lifetime net is −$26.3M, making them a net seller over the disclosed history. Current disclosed insider exposure totals $4.7M 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

$4.72M

Companies

8

Total Filings

56

Lifetime Open-Market Net

-$26.27M

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
Great Elm Capital Corp. (GECCM) Delisted 10%+ Owner 1,163,008 $25.03 $29.11M -$56.09M 27 2019-05-24
Great Elm Capital Corp. (GECCL) Delisted 10%+ Owner 5,081,992 $25.35 $128.83M -$3.90M 5 2017-11-03
GECC 10%+ Owner 906,754 $5.21 $4.72M -$288.2K 3 2017-09-18
Forest Investments, Inc. (NEFF) Delisted 10%+ Owner 771,750 — — $1.52M 2 2017-05-16
Everi Holdings Inc. (EVRI) Delisted 10%+ Owner 1,191,160 $14.24 $16.96M $16.14M 12 2016-05-16
Forest Investments, Inc. (UPIP) Delisted 10%+ Owner 10,117,671 — — $0 1 2015-10-28
GRIZZLY MERGER SUB 1, LLC (GNCMA) Delisted 10%+ Owner 305,196 — — -$31.65M 3 2015-01-15
GLEACHER & COMPANY, INC. (BPSG) Delisted 10%+ Owner 7,058,824 — — $48.00M 1 2008-03-06

Recent Filings

56 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
2019-05-24 Great Elm Capital Corp. (GECCM) Delisted Sell (S) −548,000 -$4.72M EDGAR
2019-05-21 Great Elm Capital Corp. (GECCM) Delisted Sell (S) −37,000 -$325.8K EDGAR
2019-05-16 Great Elm Capital Corp. (GECCM) Delisted Sell (S) −298,000 -$2.59M EDGAR
2019-05-13 Great Elm Capital Corp. (GECCM) Delisted Sell (S) −17,600 -$148.0K EDGAR
2019-04-29 Great Elm Capital Corp. (GECCM) Delisted Sell (S) −26,600 -$222.4K EDGAR
2019-04-24 Great Elm Capital Corp. (GECCM) Delisted Sell (S) −96,000 -$805.2K EDGAR
2019-03-27 Great Elm Capital Corp. (GECCM) Delisted Sell (S) −442,400 -$3.64M EDGAR
2019-03-22 Great Elm Capital Corp. (GECCM) Delisted Sell (S) −48,000 -$396.7K EDGAR
2019-03-19 Great Elm Capital Corp. (GECCM) Delisted Sell (S) −64,618 -$529.4K EDGAR
2019-03-14 Great Elm Capital Corp. (GECCM) Delisted Sell (S) −128,000 -$1.04M EDGAR
Showing 1–10 of 56
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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.