Haiyan Song

Director · 3 filings · Latest: Sep 11, 2026

CSG SYSTEMS INTERNATIONAL INC

Eos Energy Enterprises, Inc.

Ticker	Owner	Relationship	Date	Transaction	Cost	#Shares	Value ($)	#Shares Total	SEC Filing
EOSE	Haiyan Song	Director	Sep 14, 2026	Purchase	$3.84	5,000	$19.2K	15,000	Sep 15 12:56 PM
EOSE	Haiyan Song	Director	Sep 11, 2026	Purchase	$3.95	10,000	$39.5K	10,000	Sep 15 12:56 PM