RBBN tangible book value per share history

Annual fiscal periods. Dates are reporting period ends; fiscal years can differ from calendar years.

Ribbon Communications Inc Tangible Book Value Per Share — Annual fiscal periods
Period ending	Tangible Book Value Per Share
Dec 31, 2025	0.027
Dec 31, 2024	-0.4815
Dec 31, 2023	-0.5059
Dec 31, 2022	-0.4927
Dec 31, 2021	-0.8433
Dec 31, 2020	-1.0606
Dec 31, 2019	0.41
Dec 31, 2018	-0.4311
Dec 31, 2017	0.6007
Dec 31, 2016	2.8254
Dec 31, 2015	3.1604
Dec 31, 2014	3.6006
Dec 31, 2013	4.8787
Dec 31, 2012	5.8664
Dec 31, 2011	7.3426
Dec 31, 2010	7.4835
Dec 31, 2009	7.468
Dec 31, 2008	7.3826
Dec 31, 2007	9.1772
Dec 31, 2006	8.5221
Dec 31, 2005	5.6352
Dec 31, 2004	5.3907
Dec 31, 2003	5.2568
Dec 31, 2002	1.463
Dec 31, 2001	2.844
Dec 31, 2000	7.8593
Dec 31, 1999	2.433
Dec 31, 1998	-2.4348