Porteous William
SEC Form 4 insider trading activity
Porteous William has filed 6 SEC Form 4 filings (6 transaction rows) across 1 company, with disclosures dating back to 2025. 5 of those filings fall inside the rolling window. Most recent filing: Oct 6, 2026.
Companies traded
Other insiders at SPIR
No insider trading data found for Porteous William.
Frequently asked questions
How many SEC Form 4 filings has Porteous William made?
Porteous William has filed 6 SEC Form 4 filings (6 transaction rows) across 1 company since 2025.
Which companies does Porteous William trade?
Porteous William has filed SEC Form 4 disclosures for 1 company, including SPIR.
When was Porteous William's most recent SEC Form 4 filing?
Porteous William's most recent SEC Form 4 filing on Tracefour is dated Oct 6, 2026.