Insider transactions

John A Weinzierl

CIK 1377295 · Chairman · last filed 2026-03-06

John A Weinzierl is a Chairman who has filed 19 SEC Form 4 insider transactions across 4 companies since 2010. The most recent filing, for USEG, was dated Mar 6, 2026. 7 SEC filings were submitted jointly with Katla Energy Holdings LLC.

"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
$0
Companies
4
Total Filings
19
Lifetime Open-Market Net
$0

Charts

Trading activity, where the exposure sits, and each trade against the stock price.

Filer Profile

Reported Address
MEMORIAL RESOURCE DEVELOPMENT, LLC
1301 MCKINNEY STREET, SUITE 2100
HOUSTON, TX 77010
Related Filers
Katla Energy Holdings LLC — 7 joint filings, latest 2026-05-01
John Alfred Weinzierl 2020 Trust u/a November 10, 2020 — 5 joint filings, latest 2026-05-01
Lubbock Energy Partners LLC — 2 joint filings, latest 2022-01-31
Wallis T Marsh — 2 joint filings, latest 2022-01-31
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
US ENERGY CORP (USEG) Delisted Chairman 8,775,219 $0.99 $8.65M $0 5 2026-03-06
Range Resources - Louisiana, Inc. (MRD) Delisted Former CEO and Director 343,508 — — $0 3 2016-06-03
EAGLE ROCK ENERGY PARTNERS L P (EROCW) Delisted Director 14,960 — — $0 1 2010-11-16
EAGLE ROCK ENERGY PARTNERS L P (EROCR) Delisted Director 11,880 — — $0 1 2010-06-22

Recent Filings

19 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
2026-03-06 US ENERGY CORP (USEG) Delisted Grant (A) — $0 EDGAR
2024-04-10 US ENERGY CORP (USEG) Delisted Other (J) +6,249,786 $0 EDGAR
2024-03-20 US ENERGY CORP (USEG) Delisted Grant (A) +120,000 $0 EDGAR
2023-01-10 US ENERGY CORP (USEG) Delisted Grant (A) +97,826 $0 EDGAR
2022-08-05 US ENERGY CORP (USEG) Delisted Other (J) −3,430,526 $0 EDGAR
2016-06-16 — Grant (A) — $0
2016-06-03 Range Resources - Louisiana, Inc. (MRD) Delisted Tax (F) −87,315 -$1.39M EDGAR
2016-06-01 — Tax (F) −39,112 -$82.4K
2015-06-02 Range Resources - Louisiana, Inc. (MRD) Delisted Grant (A) +126,917 $0 EDGAR
2015-06-02 — Grant (A) +53,548 $0
Showing 1–10 of 19
Page 1 of 2
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.