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PATRICK J BALTHROP

CIK 1284839 · President & CEO · last filed 2026-06-22

PATRICK J BALTHROP is a President & CEO who has filed 49 SEC Form 4 insider transactions across 4 companies since 2007. The most recent filing, for MXCT, was dated Jun 22, 2026. Across all open-market trades the lifetime net is −$1.9M, making them a net seller over the disclosed history. Current disclosed insider exposure totals $6.2M across reported positions.

"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

$6.19M

Companies

4

Total Filings

49

Lifetime Open-Market Net

-$1.89M

Filer Profile

Reported Address
C/O MAXCYTE, INC.
9713 KEY WEST AVENUE, SUITE 400
ROCKVILLE, MD 20850
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
MXCT Director 80,998 $1.25 $100.8K $0 5 2026-06-22
Oxford Immunotec Global PLC (OXFD) Delisted Director 8,081 — — $49.9K 8 2020-09-02
PSNL Director — $16.43 — $0 1 2020-05-19
LMNX President & CEO 664,448 $9.16 $6.09M -$1.94M 34 2014-03-17

Recent Filings

49 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
2026-06-22 MXCT Grant (A) +30,421 $0 EDGAR
2025-06-23 MXCT Grant (A) +29,210 $0 EDGAR
2024-06-13 MXCT Grant (A) +21,367 $0 EDGAR
2023-06-23 MXCT Grant (A) — $0 EDGAR
2022-12-01 MXCT Grant (A) — $0 EDGAR
2021-03-12 — Disp (D) −8,081 -$177.8K
2020-09-02 Oxford Immunotec Global PLC (OXFD) Delisted — — $0 EDGAR
2020-06-26 Oxford Immunotec Global PLC (OXFD) Delisted Grant (A) +4,081 $0 EDGAR
2020-05-21 Oxford Immunotec Global PLC (OXFD) Delisted Buy (P) +4,000 $49.9K EDGAR
2020-05-19 PSNL Grant (A) — $0 EDGAR
Showing 1–10 of 49
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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.