KOSTER CHRISTOPHER
Secretary & General Counsel
KOSTER CHRISTOPHER has filed 5 SEC Form 4 filings (5 transaction rows) across 1 company, with disclosures dating back to 2026. 5 of those filings fall inside the rolling window. Most recent filing: Aug 27, 2026.
On the most recent filing, KOSTER CHRISTOPHER is listed as Secretary & General Counsel at CENTENE CORP. Inside the rolling window, KOSTER CHRISTOPHER reported no open-market purchases and 2 open-market sales totaling $6.9M in CNC. The largest disclosed transaction in the window is a sale of 56,500 CNC shares on Aug 26, 2026, worth $3.8M.
Companies traded
Other insiders at CNC
Insider Buying
$0
reported purchases (SEC code P)
Insider Selling
$6.9M
reported sales (SEC code S)
Companies
1
in the rolling window
Frequently asked questions
How many SEC Form 4 filings has KOSTER CHRISTOPHER made?
KOSTER CHRISTOPHER has filed 5 SEC Form 4 filings (5 transaction rows) across 1 company since 2026.
Which companies does KOSTER CHRISTOPHER trade?
KOSTER CHRISTOPHER has filed SEC Form 4 disclosures for 1 company, including CNC.
When was KOSTER CHRISTOPHER's most recent SEC Form 4 filing?
KOSTER CHRISTOPHER's most recent SEC Form 4 filing on Tracefour is dated Aug 27, 2026.
What is KOSTER CHRISTOPHER's job title?
On the most recent SEC Form 4 filings tracked by Tracefour, KOSTER CHRISTOPHER is listed as Secretary & General Counsel.
What is KOSTER CHRISTOPHER's total buy and sell value in the current window?
Inside the rolling retention window, KOSTER CHRISTOPHER bought $0 and sold $6.9M based on SEC Form 4 filings.
What was KOSTER CHRISTOPHER's largest disclosed transaction?
The largest disclosed transaction in the current window is a sale of 56,500 CNC shares on 2026-08-26, worth $3.8M, per SEC Form 4 filings.