Ribbon Communications Inc.

CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM RBBN

Report date

12/31/2025

Quarter

2025 Q4

Filed

2/17/2026

Shares

88,452

Value ($000)

255

Weight

0.0%

2019 Q4 - 2025 Q4 (25 filings)

Shares History

History scope: non-option holdings only (PUT/CALL rows excluded).

All 13F Holders	Filing date	Value ($000s)	% of Holdings	Shares	Reporting period
2025 Q4	2/17/2026	255	0.0%	88,452	12/31/2025
2025 Q3	11/14/2025	336	0.0%	88,525	9/30/2025
2025 Q2	8/14/2025	359	0.0%	89,506	6/30/2025
2025 Q1	5/15/2025	351	0.0%	89,506	3/31/2025
2024 Q4	3/18/2025	372	0.0%	89,506	12/31/2024
2024 Q3	4/4/2025	293	0.0%	90,044	9/30/2024
2024 Q2	4/8/2025	303	0.0%	92,160	6/30/2024
2024 Q1	5/16/2024	300	0.0%	93,747	3/31/2024
2023 Q4	2/13/2024	285	0.0%	98,213	12/31/2023
2023 Q3	11/14/2023	274	0.0%	102,337	9/30/2023
2023 Q2	8/21/2023	310	0.0%	111,092	6/30/2023
2023 Q1	5/9/2023	319	0.0%	93,346	3/31/2023
2022 Q4	2/14/2023	263	0.0%	94,281	12/31/2022
2022 Q3	11/21/2022	207	0.0%	93,271	9/30/2022
2022 Q2	8/15/2022	291	0.0%	95,873	6/30/2022
2022 Q1	5/16/2022	345	0.0%	111,788	3/31/2022
2021 Q4	2/15/2022	721	0.0%	119,225	12/31/2021
2021 Q3	11/15/2021	694	0.0%	116,090	9/30/2021
2021 Q2	8/16/2021	737	0.0%	96,795	6/30/2021
2021 Q1	5/18/2021	844	0.0%	102,782	3/31/2021
2020 Q4	2/16/2021	688	0.0%	104,920	12/31/2020
2020 Q3	11/17/2020	394	0.0%	101,882	9/30/2020
2020 Q2	8/17/2020	391	0.0%	99,399	6/30/2020
2020 Q1	5/13/2020	293	0.0%	96,649	3/31/2020
2019 Q4	2/14/2020	296	0.0%	95,587	12/31/2019