Reporting Manager
Douglas L. Braunstein
Symbol
TALK
Shares outstanding
176,241,208 shares
Disclosed Ownership
26,259,940 shares
Ownership
15%
Form type
SCHEDULE 13D/A
Filing time
10 Mar 2026, 17:24:53 UTC
Date of event
09 Mar 2026

Reporting Managers (4)

Name Ownership Shares Owned sole voting power shared voting power Signature Title CIK
HEC Management GP LLC 11% 18,980,600 0 18,980,600 /s/ Douglas L. Braunstein Douglas L. Braunstein, Managing Member
Hudson Executive Capital LP 11% 18,980,600 0 18,980,600 /s/ Douglas L. Braunstein Douglas L. Braunstein, Managing Member 0001652522
HEC Master Fund LP 11% 18,980,600 0 18,980,600 /s/ Douglas L. Braunstein Douglas L. Braunstein, Investment Manager
Douglas L. Braunstein 15% 26,259,940 7,279,340 18,980,600 /s/ Douglas L. Braunstein Douglas L. Braunstein