Home

DAVID L LAMP

CIK 1275536 · President and CEO · last filed 2025-12-12

DAVID L LAMP is a President and CEO who has filed 58 SEC Form 4 insider transactions across 5 companies since 2007. The most recent filing, for CVI, was dated Dec 12, 2025. Across all open-market trades the lifetime net is −$8.7M, making them a net seller over the disclosed history. Current disclosed insider exposure totals $745.4K 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.

Loading insider history…
Disclosed Exposure

$745.4K

Companies

5

Total Filings

58

Lifetime Open-Market Net

-$8.72M

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
CVI President and CEO 17,388 $42.87 $745.4K $0 11 2025-12-12
Western Refining, Inc. (WNR) Delisted President and COO 0 — — $0 4 2017-06-02
Northern Tier Energy LP (NTI) Delisted President and CEO 354,129 — — -$1.87M 4 2016-01-22
HollyFrontier Corp (HFC) Delisted EVP & COO 182,004 $36.39 $6.62M -$6.12M 15 2013-12-19
HollyFrontier Corp (HOC) Delisted President 82,030 — — -$728.3K 23 2011-05-19

Recent Filings

58 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
2025-12-12 CVI Mixed — -$2.05M EDGAR
2024-12-13 CVI Mixed — -$1.06M EDGAR
2023-12-15 CVI Mixed — -$2.57M EDGAR
2022-12-16 CVI Mixed — -$2.59M EDGAR
2021-12-15 CVI Mixed — -$212.4K EDGAR
2021-12-10 CVI Mixed — -$903.5K EDGAR
2020-12-16 CVI Mixed — -$205.5K EDGAR
2020-12-11 CVI Mixed — -$168.0K EDGAR
2019-12-17 CVI Mixed — -$556.9K EDGAR
2018-12-18 CVI Grant (A) — $0 EDGAR
Showing 1–10 of 58
Page 1 of 6
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.