Kempster Thomas
SEC Form 4 insider trading activity
Kempster Thomas has filed 5 SEC Form 4 filings (7 transaction rows) across 1 company, with disclosures dating back to 2025. 4 of those filings fall inside the rolling window. Most recent filing: Sep 15, 2026.
On the most recent filing, Kempster Thomas is listed as Director at Data Storage Corp. Inside the rolling window, Kempster Thomas reported no open-market purchases and 2 open-market sales totaling $44K in DTST. The largest disclosed transaction in the window is a sale of 6,846 DTST shares on Dec 10, 2025, worth $34K.
Companies traded
Other insiders at DTST
Insider Buying
$0
reported purchases (SEC code P)
Insider Selling
$44K
reported sales (SEC code S)
Companies
1
in the rolling window
Frequently asked questions
How many SEC Form 4 filings has Kempster Thomas made?
Kempster Thomas has filed 5 SEC Form 4 filings (7 transaction rows) across 1 company since 2025.
Which companies does Kempster Thomas trade?
Kempster Thomas has filed SEC Form 4 disclosures for 1 company, including DTST.
When was Kempster Thomas's most recent SEC Form 4 filing?
Kempster Thomas's most recent SEC Form 4 filing on Tracefour is dated Sep 15, 2026.
What is Kempster Thomas's total buy and sell value in the current window?
Inside the rolling retention window, Kempster Thomas bought $0 and sold $44K based on SEC Form 4 filings.
What was Kempster Thomas's largest disclosed transaction?
The largest disclosed transaction in the current window is a sale of 6,846 DTST shares on 2025-12-10, worth $34K, per SEC Form 4 filings.