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Mark Chivers

CIK 1761479 · See Remarks · last filed 2021-09-03

Mark Chivers is a corporate insider who has filed 13 SEC Form 4 insider transactions across 1 company since 2019. The most recent filing, for LXFR, was dated Sep 3, 2021. Across all open-market trades the lifetime net is −$43.1K, making them a net seller over the disclosed history. Current disclosed insider exposure totals $78.8K across reported positions. 14 SEC filings were submitted jointly with LUXFER HOLDINGS PLC.

"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

$78.8K

Companies

1

Total Filings

13

Lifetime Open-Market Net

-$43.1K

Filer Profile

Reported Address
LUXFER HOLDINGS PLC
LUMNS LANE
MANCHESTER, X0 M27 8LN
Related Filers
LUXFER HOLDINGS PLC — 14 joint filings, latest 2021-09-03
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
LXFR See Remarks 4,576 $17.21 $78.8K -$43.1K 13 2021-09-03

Recent Filings

13 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
2021-09-03 LXFR Mixed +267 -$3.4K EDGAR
2021-08-09 LXFR Sell (S) −550 -$11.1K EDGAR
2021-03-29 LXFR Mixed +1,309 -$17.8K EDGAR
2021-03-16 LXFR Mixed +694 -$11.9K EDGAR
2020-11-09 LXFR Sell (S) −500 -$6.9K EDGAR
2020-09-02 LXFR Grant (A) — $0 EDGAR
2020-05-19 LXFR Sell (S) −1,000 -$13.2K EDGAR
2020-03-30 LXFR Mixed +1,210 -$12.3K EDGAR
2020-03-17 LXFR Mixed +282 -$2.8K EDGAR
2019-08-23 LXFR Sell (S) −304 -$5.0K EDGAR
Showing 1–10 of 13
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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.