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Greg A Walker

CIK 1305727 · Sr.VP, Gen.Counsel & Secretary · last filed 2023-07-18

Greg A Walker is a Sr.VP, Gen.Counsel & Secretary who has filed 17 SEC Form 4 insider transactions across 2 companies since 2007. The most recent filing, for TRTL.WS, was dated Jul 18, 2023. Across all open-market trades the lifetime net is −$7.4M, making them a net seller over the disclosed history. 37 SEC filings were submitted jointly with Alpha Natural Resources, Inc.

"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

$0

Companies

2

Total Filings

17

Lifetime Open-Market Net

-$7.37M

Filer Profile

Reported Address
999 CORPORATE BOULEVARD
SUITE 300
LINTHICUM HEIGHTS, MD 21090
Related Filers
Alpha Natural Resources, Inc. — 37 joint filings, latest 2009-08-04
Profile details as reported on the filer's SEC submissions — for individual insiders the address is often in care of the issuer. Related filers are identified from jointly filed SEC submissions and shared reported addresses. View filings on SEC EDGAR.

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
TortoiseEcofin Acquisition Corp. III (TRTL.WS) Delisted Director — $0.18 — $0 2 2023-07-18
Alpha Natural Resources, Inc. (FCL) Delisted Sr.VP, Gen.Counsel & Secretary 36,360 — — -$7.37M 14 2009-01-14

Recent Filings

17 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
2023-07-18 TortoiseEcofin Acquisition Corp. III (TRTL.WS) Delisted Other (J) — $0 EDGAR
2022-11-01 TortoiseEcofin Acquisition Corp. III (TRTL.WS) Delisted Other (J) — $0 EDGAR
2009-08-04 — Mixed +22,818 $0
2009-01-14 Alpha Natural Resources, Inc. (FCL) Delisted Grant (A) — $0 EDGAR
2008-08-04 Alpha Natural Resources, Inc. (FCL) Delisted Mixed — -$1.73M EDGAR
2008-05-02 Alpha Natural Resources, Inc. (FCL) Delisted Mixed +8,300 -$517.1K EDGAR
2008-05-02 Alpha Natural Resources, Inc. (FCL) Delisted Sell (S) −8,300 -$485.5K EDGAR
2008-03-10 Alpha Natural Resources, Inc. (FCL) Delisted Mixed +4,200 -$857.2K EDGAR
2008-03-10 Alpha Natural Resources, Inc. (FCL) Delisted Sell (S) −4,200 -$243.5K EDGAR
2008-02-26 Alpha Natural Resources, Inc. (FCL) Delisted Gift (G) −2,900 $0 EDGAR
Showing 1–10 of 17
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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.