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MARK A HELLERSTEIN

CIK 1198283 · CEO & President · last filed 2020-11-18

MARK A HELLERSTEIN is a CEO & President who has filed 39 SEC Form 4 insider transactions across 3 companies since 2007. The most recent filing shows the insider was granted $125.0K of MDU on Nov 18, 2020. Across all open-market trades the lifetime net is −$8.0M, making them a net seller over the disclosed history. Current disclosed insider exposure totals $4.4M across reported positions. 29 SEC filings were submitted jointly with MDU RESOURCES GROUP 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

$4.35M

Companies

3

Total Filings

39

Lifetime Open-Market Net

-$8.05M

Filer Profile

Reported Address
1776 LINCOLN ST
STE 700
DENVER, CO 80203
Related Filers
MDU RESOURCES GROUP INC — 29 joint filings, latest 2020-11-18
TRANSOCEAN INTERNATIONAL Ltd — 5 joint filings, latest 2007-11-29
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
MDU Director 87,331 $19.57 $1.71M $0 27 2020-11-18
SM CEO & President 72,555 $36.44 $2.64M -$8.05M 10 2008-12-16
RIG Director 20 $5.85 $117 $0 2 2007-11-29

Recent Filings

39 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
2020-11-18 MDU Grant (A) +4,921 $125.0K EDGAR
2019-11-20 MDU Grant (A) +4,286 $125.0K EDGAR
2018-12-31 MDU Grant (A) — $0 EDGAR
2018-11-21 MDU Grant (A) +4,143 $110.0K EDGAR
2018-09-28 MDU Grant (A) — $0 EDGAR
2018-06-29 MDU Grant (A) — $0 EDGAR
2018-03-30 MDU Grant (A) — $0 EDGAR
2018-01-03 MDU Grant (A) — $0 EDGAR
2017-11-22 MDU Grant (A) +4,091 $110.0K EDGAR
2017-10-02 MDU Grant (A) — $0 EDGAR
Showing 1–10 of 39
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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.