Siemiatkowski Sebastian
Chief Executive Officer
Siemiatkowski Sebastian has filed 1 SEC Form 4 filing (1 transaction rows) across 1 company, with disclosures dating back to 2026. 1 of those filings fall inside the rolling window. Most recent filing: Aug 28, 2026.
On the most recent filing, Siemiatkowski Sebastian is listed as Chief Executive Officer at Klarna Group plc. Inside the rolling window, Siemiatkowski Sebastian reported 1 open-market purchase totaling $9.9M in KLAR and no open-market sales.
Companies traded
Other insiders at KLAR
Insider Buying
$9.9M
reported purchases (SEC code P)
Insider Selling
$0
reported sales (SEC code S)
Companies
1
in the rolling window
Frequently asked questions
How many SEC Form 4 filings has Siemiatkowski Sebastian made?
Siemiatkowski Sebastian has filed 1 SEC Form 4 filing (1 transaction rows) across 1 company since 2026.
Which companies does Siemiatkowski Sebastian trade?
Siemiatkowski Sebastian has filed SEC Form 4 disclosures for 1 company, including KLAR.
When was Siemiatkowski Sebastian's most recent SEC Form 4 filing?
Siemiatkowski Sebastian's most recent SEC Form 4 filing on Tracefour is dated Aug 28, 2026.
What is Siemiatkowski Sebastian's job title?
On the most recent SEC Form 4 filings tracked by Tracefour, Siemiatkowski Sebastian is listed as Chief Executive Officer.
What is Siemiatkowski Sebastian's total buy and sell value in the current window?
Inside the rolling retention window, Siemiatkowski Sebastian bought $9.9M and sold $0 based on SEC Form 4 filings.
What was Siemiatkowski Sebastian's largest disclosed transaction?
The largest disclosed transaction in the current window is a purchase of 692,506 KLAR shares on 2026-08-26, worth $9.9M, per SEC Form 4 filings.