Ribbon Communications Inc.
Ribbon Communications Inc. (RBBN) Stock Ownership
Institutional vs insider vs public ownership from 13F and float data — top holders, activity, and insider trades below.
SEC 13F · FMP · RBBN · as of Sep 30, 2025
Ownership Breakdown
156
Institutional Holders
▲ 9 vs Q2
$488.68M
Total Inst. Value
▼ $16.63M vs Q2
176.14M
Shares Outstanding
freeFloat 80.64%
129.88M
13F Shares Held
▲ 2.67M vs Q2
Institutional ownership = 13F shares ÷ total outstanding. Insider % = 100 − free float. Public % = free float − institution %. Data: FMP /symbol-positions-summary + /shares-float + SEC EDGAR.
Top Institutional Holders
RBBN largest shareholders · institutional ownership
Q3 2025 · SEC 13F
Showing top 10 holders
| Holder | Shares | % Owned | Weight | Value | Reported | Change |
|---|---|---|---|---|---|---|
JPMORGAN CHASE & CO services-computer integrated systems design | 52.04M | 29.53% | 29.53% | $197.74B | Nov 26, 2025 | — held |
NEUBERGER BERMAN GROUP LLC services-computer integrated systems design | 18.25M | 10.36% | 10.36% | $64.53B | Nov 12, 2025 | ▼ 207.9K |
PARADIGM CAPITAL MANAGEMENT INC/NY services-computer integrated systems design | 8.75M | 4.96% | 4.96% | $33.25B | Nov 14, 2025 | ▲ 1.0K |
BLACKROCK, INC. services-computer integrated systems design | 7.70M | 4.37% | 4.37% | $29.26B | Nov 12, 2025 | ▼ 40.0K |
VANGUARD GROUP INC services-computer integrated systems design | 7.69M | 4.36% | 4.36% | $29.23B | Nov 7, 2025 | ▲ 166.7K |
DIMENSIONAL FUND ADVISORS LP services-computer integrated systems design | 6.55M | 3.71% | 3.71% | $24.87B | Nov 12, 2025 | ▼ 19.6K |
ROYCE & ASSOCIATES LP services-computer integrated systems design | 4.31M | 2.44% | 2.44% | $16.36B | Nov 12, 2025 | ▲ 633.0K |
GEODE CAPITAL MANAGEMENT, LLC services-computer integrated systems design | 2.31M | 1.31% | 1.31% | $8.78B | Nov 12, 2025 | ▲ 7.2K |
STATE STREET CORP services-computer integrated systems design | 2.09M | 1.19% | 1.19% | $7.96B | Nov 14, 2025 | ▲ 1.7K |
CONNOR, CLARK & LUNN INVESTMENT MANAGEMENT LTD. services-computer integrated systems design | 1.87M | 1.06% | 1.06% | $7.09B | Nov 13, 2025 | ▲ 389.1K |
Data from SEC Form 13F filings. Ownership bar normalised to largest holder. Change flags: isNew / isSoldOut / changeInSharesNumber (FMP extract-analytics/holder).
Institutional Activity
Q3 2025 vs prior quarter
Q3 2025
26
Increased
+3.01M shares5
New Positions
first time holders15
Decreased
−1.44M shares0
Sold Out
fully exitedNet shares change (top 50)
+1.57M
+3.01M / −1.44M
Net new holders
+16
5 new / 0 exited
Based on top 50 institutional holders by position size. Fields: isNew, isSoldOut, changeInSharesNumber (FMP extract-analytics/holder, limit=50).
Insider Buying vs Selling
RBBN insider trading · insider activity
Source: SEC Form 4
4
Buy transactions
4
Sell transactions
1.00
Buy/Sell ratio
$0M
Total disposed
Recent Insider Transactions
Showing 10 most recent · Common Stock only
| Name · Role | Date | Type | Shares | Price | Value | After Trans. | Filing |
|---|---|---|---|---|---|---|---|
Macken Patrick W EVP, Chief Legal Officer | May 15, 2026 | Tax Withhold | 24,267 | $2.63 | $63.8K | 482.1K | Form 4 ↗ |
Macken Patrick W EVP, Chief Legal Officer | May 15, 2026 | Tax Withhold | 20,284 | $2.63 | $53.3K | 452.2K | Form 4 ↗ |
Macken Patrick W EVP, Chief Legal Officer | May 15, 2026 | Tax Withhold | 14,688 | $2.63 | $38.6K | 427.5K | Form 4 ↗ |
Macken Patrick W EVP, Chief Legal Officer | Apr 17, 2026 | Tax Withhold | 28,868 | $2.71 | $78.2K | 409.4K | Form 4 ↗ |
Macken Patrick W EVP, Chief Legal Officer | Apr 17, 2026 | Tax Withhold | 15,322 | $2.71 | $41.5K | 373.8K | Form 4 ↗ |
Macken Patrick W EVP, Chief Legal Officer | Apr 17, 2026 | Tax Withhold | 9,252 | $2.71 | $25.1K | 354.9K | Form 4 ↗ |
Bucci Sam EVP, Chief Operating Officer | May 15, 2026 | Tax Withhold | 44,609 | $2.63 | $117.3K | 599.3K | Form 4 ↗ |
Source: /insider-trading/search (FMP stable). Buy/Sell direction: acquisitionOrDisposition A=Buy, D=Sell. RSU vesting (M-Exempt) excluded from sentiment bar. All data from SEC EDGAR public filings.
About institutional & insider ownership
Ribbon Communications Inc. (RBBN) is primarily owned by institutional investors, who hold approximately 73.7% of total shares outstanding. Company insiders own approximately 19.36%, while retail and public investors account for the remaining 6.90%.
The largest institutional shareholder of Ribbon Communications Inc. is JPMORGAN CHASE & CO, holding approximately 52.04 million shares — equal to 29.53% of outstanding shares — as of September 30, 2025.
A total of 156 institutional investors currently hold RBBN stock, with a combined institutional value of approximately $488,677,720 as of the most recent 13F filing period.
Frequently asked questions
RBBN ownershipRibbon Communications Inc. (RBBN) is primarily owned by institutional investors, who hold approximately 73.7% of shares. The largest shareholder is JPMORGAN CHASE & CO with a 29.53% stake. Company insiders hold 19.36%. Data sourced from SEC Form 13F as of September 30, 2025.