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Andrew Paul Mazar

CIK 1727393 · Chief Operating Officer · last filed 2026-04-01

Andrew Paul Mazar is a Chief Operating Officer who has filed 15 SEC Form 4 insider transactions across 2 companies since 2019. The most recent filing, for ACTU, was dated Apr 1, 2026. Across all open-market trades the lifetime net is −$179.2M, making them a net seller over the disclosed history. Current disclosed insider exposure totals $33.7M across reported positions. 5 SEC filings were submitted jointly with Michael J Brown.

"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

$33.67M

Companies

2

Total Filings

15

Lifetime Open-Market Net

-$179.15M

Filer Profile

Reported Address
1751 RIVER RUN, SUITE 400
FORT WORTH, TX 76107
Related Filers
Michael J Brown — 5 joint filings, latest 2025-09-26
Thomas V. O'Halloran — 5 joint filings, latest 2025-09-26
Chandler Robinson — 5 joint filings, latest 2025-09-26
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
ACTU Chief Operating Officer — $1.07 — $0 2 2026-04-01
MNPR Chief Scientific Officer 305,359 $110.26 $33.67M -$179.15M 12 2025-09-26

Recent Filings

15 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
2026-04-01 ACTU Grant (A) — $0 EDGAR
2025-09-26 MNPR Sell (S) −2,751,145 -$175.00M EDGAR
2025-04-02 ACTU Grant (A) — $0 EDGAR
2022-04-01 MNPR Mixed +1,135 -$1.2K EDGAR
2022-02-04 MNPR Grant (A) — $0 EDGAR
2022-01-04 MNPR Mixed +1,266 -$2.2K EDGAR
2022-01-04 MNPR Mixed +1,050 -$1.8K EDGAR
2021-10-01 MNPR Mixed +1,135 -$2.3K EDGAR
2021-07-02 MNPR Mixed +2,270 -$5.5K EDGAR
2021-02-16 MNPR Sell (S) −625,000 -$9.15M EDGAR
Showing 1–10 of 15
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.