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MARK W PETERSON

CIK 1535684 · Chief Administrative Officer · last filed 2026-08-06

MARK W PETERSON is a Chief Administrative Officer who has filed 63 SEC Form 4 insider transactions across 2 companies since 2012. The most recent filing shows the insider sold $1.3M of ZWS on Aug 6, 2026. Across all open-market trades the lifetime net is −$33.5M, making them a net seller over the disclosed history. Current disclosed insider exposure totals $15.0M across reported positions. 62 SEC filings were submitted jointly with Zurn Water Solutions Corp.

"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

$14.97M

Companies

2

Total Filings

63

Lifetime Open-Market Net

-$33.48M

Filer Profile

Reported Address
511 W. FRESHWATER WAY
MILWAUKEE, WI 53204
Related Filers
Zurn Water Solutions Corp — 62 joint filings, latest 2026-08-06
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
ZWS Chief Administrative Officer 314,417 $47.61 $14.97M -$27.36M 34 2026-08-06
Zurn Elkay Water Solutions Corp (RXN) Delisted SVP & Chief Financial Officer 87,721 $64.95 $5.70M -$6.11M 17 2021-05-27

Recent Filings

63 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
2026-08-06 ZWS Sell (S) −25,000 -$1.33M EDGAR
2026-08-06 ZWS Sell (S) −25,000 -$1.33M EDGAR
2026-08-04 ZWS Notice (144) −25,000 -$1.33M EDGAR
2026-02-19 ZWS Sell (S) −2,006 -$102.0K EDGAR
2026-02-17 ZWS Notice (144) −2,006 -$102.0K EDGAR
2026-02-13 ZWS Sell (S) −3,793 -$195.3K EDGAR
2026-02-11 ZWS Notice (144) −3,793 -$195.3K EDGAR
2026-02-10 ZWS Notice (144) −35,267 -$1.83M EDGAR
2026-02-10 ZWS Mixed +44,235 -$1.83M EDGAR
2026-02-06 ZWS Sell (S) −23,183 -$1.19M EDGAR
Showing 1–10 of 63
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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.