13D·WATCH Activist + Insider Intelligence Live feed Blog About Pilot
ISSUER PROFILE · CIK 0001708055

Ribbon Communications Inc.RBBN

1 13D/G filings 1 distinct filers 0 insider transactions (365d)

Cross-Reference Snapshot

Activist filings
1
1 SC
Distinct filers
1
single filer
Insiders (365d)
0
0 buys · 0 sales
Latest short DTC
2.56
as of 2026-05-29

13D/G Filings Timeline · 1 total

FiledFormFilerStakeSharesIntent
2020-03-05 SC JPMORGAN CHASE & CO view →

FINRA Short Interest History

SettlementShort InterestDays to Cover% Δ vs prior
2026-05-29 3,896,613 2.56 +9.9%
2026-05-15 3,544,743 5.20 +3.5%
2026-04-30 3,424,570 2.98 +7.3%
2026-04-15 3,192,230 3.06 +1.3%
2026-03-31 3,151,966 5.90 +4.9%
2026-03-13 3,004,557 3.93 -10.8%
2026-02-27 3,369,224 3.16 -9.1%
2026-02-13 3,707,139 2.39 +6.1%
2026-01-30 3,494,153 8.03 +3.4%
2026-01-15 3,377,824 5.62 +0.8%
2025-12-31 3,352,510 5.79 +4.2%
2025-12-15 3,218,179 4.57 +2.6%

Alert me when any activist files on Ribbon Communications Inc.

Free. We email you when criteria match. One-click unsubscribe in every email.

Track every activist who touches this name.

Custom alerts · full feed · daily intelligence · API. $1,500/mo. Pilots welcome.

Request a pilot →