InsidersTradesSigma
Total declarations
Companies
▲ Purchases (2 ops.)
▼ Sales (0 ops.)
Insider track record
OtherDisclosed buys
2
Disclosed sells
0
T+90 hit rate
0%
T+90 mean return
-9.2%
Across 1 buy signal with a settled T+90 return. Return basis: close on the day after publication.
Signal history
Browse the complete record of transactions filed by Porter Stuart D. Officer active across 5 companies, notably ChampionX Corp. Cumulatively, 18 reports have been published. Split: 2 buys · 0 sell. Total volume traded: €505k. Activity tracked since 15 November 2021. The latest transaction was disclosed on 28 May 2026 (Levée d'options). Regulator: SEC (Form 4). All data is accessible without signup.
Companies and markets linked to Porter Stuart D
Open company profiles for insider transactions, fundamentals and analyst consensus when available.
Declarations18 total
150,000 sharesCommon StockSEC:0001493152-26-033232:0
28,037 shares0Class A Common StockSEC:0001193125-26-252030:0
153,846 shares@ US$3.25100.0% of flowClass A Common StockSEC:0001193125-26-016025:0
Canonical exit: 15 Apr 2026 (T+90)
31,695 shares@ US$2.7714.9% of flowClass A Common StockSEC:0001193125-25-314654:0
Canonical exit: 8 Mar 2026 (T+90)
150,000 sharesCommon StockSEC:0001493152-25-026788:0
2,771 shares0Common StockSEC:0000950170-25-096094:0
5,400 shares0Class A Common StockSEC:0000950170-25-080522:0
17,600 shares0Class A Common StockSEC:0001213900-25-001301:0
4,135 shares0Common StockSEC:0001723089-24-000143:0
294,118 shares@ US$8.50100.0% of flowClass A Common StockSEC:0001213900-24-023696:0
170,421 sharesCommon StockSEC:0000905148-24-000931:0
719,424 shares@ US$1.39100.0% of flowCommon StockSEC:0001493152-24-009657:0
4,204 shares0Common StockSEC:0001723089-23-000171:0
170,884 sharesCommon StockSEC:0000905148-23-000915:0
26,676 sharesCommon StockSEC:0001140361-23-033795:0
143,808 sharesCommon StockSEC:0001140361-23-025275:0
3,919 shares0Common StockSEC:0001723089-22-000164:0
5,230 shares0Common StockSEC:0001723089-21-000160:0
18 of 18 declarations
About Porter Stuart D
Porter Stuart D is a director at ChampionX Corp, AirJoule Technologies Corp., Montana Technologies Corp., and GameSquare Holdings, Inc. He has 14 filings in total, and across the sampled recent filings, the transactions cover the period from 2021-11-17 to 2026-06-01, with EUR 429320 of buys and EUR 0 of sells.
