Mark L. Lipson

CIK 1654549 · last filed 2023-06-02

Mark L. Lipson is a corporate insider who has filed 6 SEC Form 4 insider transactions across 1 company since 2016. The most recent filing shows the insider bought $49.8K of SOR on Jun 2, 2023. Across all open-market trades the lifetime net is +$252.0K, making them a net buyer over the disclosed history. Current disclosed insider exposure totals $301.9K 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.

Disclosed Exposure

$301.9K

Companies

1

Total Filings

6

Lifetime Open-Market Net

$252.0K

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
SOR	Director	6,761	$44.65	$301.9K	$252.0K	6	2023-06-02

Recent Filings

6 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
2023-06-02	SOR	Buy (P)	+1,315	$49.8K	EDGAR
2022-10-05	SOR	Buy (P)	+1,400	$49.9K	EDGAR
2022-07-01	SOR	Buy (P)	+1,325	$50.1K	EDGAR
2020-10-02	SOR	Buy (P)	+1,401	$52.0K	EDGAR
2017-10-19	SOR	Buy (P)	+610	$25.0K	EDGAR
2016-12-06	SOR	Buy (P)	+710	$25.2K	EDGAR

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.