FIRST WILSHIRE SECURITIES MANAGEMENT INC
Broker-DealerPosition in RBBN — Ribbon Communications Inc.
CIK 732847
PASADENA, CA
Position in RBBN
as of Mar 31, 2026
· filed May 12, 2026
Position Value
$2,983,217
-$667,430 QoQ
Shares Held
1,407,178
+11.0% QoQ
Ownership
0.799%
of shares outstanding
% of Portfolio
0.85%
of 13F equity value
Holder Rank
—
not a current holder
Holding Since
Dec 2021
18 quarters on record
Voting authority
Sole 95.58812033729919.ToString("F0")%
Shared 0.ToString("F0")%
None 4.41187966270081.ToString("F0")%
Common Shares in RBBN Over Time
Shares Held
Position Value (USD)
Position in Software - Application
Technology · as of Mar 31, 2026FIRST WILSHIRE SECURITIES MANAGEMENT INC holds $2,983,217 across 1 Software - Application name. RBBN ranks #1 (100.0% of the industry book) .
| # | Ticker | Company | Shares | Value (USD) | Open |
|---|---|---|---|---|---|
| 1 | RBBN |
Ribbon Communications Inc.
This page
|
1,407,178 | $2,983,217 |
All Filings in RBBN
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18 filing rows on record
| Report Date | Value (USD) | Shares | Type | Discretion | Filed | |
|---|---|---|---|---|---|---|
| 2026-03-31 | $2,983,217 | 1,407,178 | Shares | Sole | 2026-05-12 | |
| 2025-12-31 | $3,650,647 | 1,267,586 | Shares | Sole | 2026-02-12 | |
| 2025-09-30 | $4,960,360 | 1,305,358 | Shares | Sole | 2025-11-14 | |
| 2025-06-30 | $5,338,112 | 1,331,200 | Shares | Sole | 2025-08-14 | |
| 2025-03-31 | $5,241,878 | 1,337,214 | Shares | Sole | 2025-05-14 | |
| 2024-12-31 | $5,551,407 | 1,334,473 | Shares | Sole | 2025-02-12 | |
| 2024-09-30 | $3,801,638 | 1,169,735 | Shares | Sole | 2024-11-14 | |
| 2024-06-30 | $3,848,263 | 1,169,685 | Shares | Sole | 2024-08-14 | |
| 2024-03-31 | $3,757,936 | 1,174,355 | Shares | Sole | 2024-05-15 | |
| 2023-12-31 | $3,420,109 | 1,179,348 | Shares | Sole | 2024-02-12 | |
| 2023-09-30 | $4,727,444 | 1,763,972 | Shares | Sole | 2023-11-14 | |
| 2023-06-30 | $5,043,909 | 1,807,853 | Shares | Sole | 2023-08-14 | |
| 2023-03-31 | $6,103,273 | 1,784,583 | Shares | Sole | 2023-05-15 | |
| 2022-12-31 | $4,975,270 | 1,783,251 | Shares | Sole | 2023-02-15 | |
| 2022-09-30 | $4,060,681 | 1,829,136 | Shares | Sole | 2022-11-14 | |
| 2022-06-30 | $4,393,392 | 1,445,195 | Shares | Sole | 2022-08-15 | |
| 2022-03-31 | $4,497,077 | 1,455,365 | Shares | Sole | 2022-05-16 | |
| 2021-12-31 | $2,613,091 | 431,916 | Shares | Sole | 2022-02-14 | |
| No filing history on record for this holder in this stock. | ||||||