SEC Form 4 · Updated Daily
CMBMF
— CAMBIUM NETWORKS CORPORATION OwnershipInsider and institutional ownership derived from SEC Form 4 filings. Click any owner to see their holdings across every company they’ve filed on, and how their position has changed over time.
Current Reporting Owners
| Owner | Role | Shares Owned | As Of | Last Activity |
|---|---|---|---|---|
| Vector Cambium Holdings (Cayman), L.P. | 10%+ Owner · Director | 12,904,754 | 2021-06-07 | S |
| VECTOR CAPITAL PARTNERS III, L.P. | 10%+ Owner · Director | 12,904,754 | 2021-06-07 | S |
| Vector Capital IV, L.P. | 10%+ Owner · Director | 12,904,754 | 2021-06-07 | S |
| VECTOR CAPITAL PARTNERS IV, L.P. | 10%+ Owner · Director | 12,904,754 | 2021-06-07 | S |
| Vector Capital, Ltd. | 10%+ Owner · Director | 12,904,754 | 2021-06-07 | S |
| VECTOR ENTREPRENEUR FUND III L P | 10%+ Owner · Director | 12,904,754 | 2021-06-07 | S |
| Slusky Alexander R | Director | 12,720,696 | 2021-06-11 | J |
| VECTOR CAPITAL, L.L.C. | 10%+ Owner | 12,720,696 | 2021-06-11 | J |
| Amen Robert S | 10%+ Owner · Director | 12,720,696 | 2021-06-11 | J |
| Bhatnagar Atul | Director · Officer | 689,237 | 2021-12-08 | G |
| Vivek Vibhu | Officer | 113,561 | 2026-07-10 | F |
| Kurk Morgan C S | Director · Officer | 82,468 | 2026-08-18 | F |
| Sheppeck Bryan | Officer | 53,334 | 2021-05-20 | S |
| BRONSTEIN ANDREW P | Officer | 34,893 | 2024-01-14 | F |
| Cumming Stephen | Officer | 34,039 | 2022-01-24 | F |
| Ryan Ronald G | Officer | 33,708 | 2023-09-13 | F |
| Nirwan Archana | Officer | 31,528 | 2024-08-23 | F |
| Sayer Jacob | Officer | 26,855 | 2025-08-15 | F |
| de Graaf Raymond | Officer | 24,831 | 2024-03-13 | F |
| Lynch Kevin J | Director | 20,069 | 2023-11-16 | P |
| Imhoff Scott | Officer | 13,037 | 2021-12-07 | M |
| Becerril John Monroy | Officer | 7,730 | 2024-08-01 | F |
| Rau Sally | Officer | 6,759 | 2023-06-07 | M |
| Cada-Bartoli Melissa Elizabeth | Officer | 6,331 | 2026-06-01 | F |
| Verma Vikram | Director | 4,000 | 2023-12-07 | P |
| Kurk Neal M | Reporting Owner | 0 | 2023-09-25 | D |
Recent Filings
| Date | Owner | Activity | Shares | Price | Owned After |
|---|---|---|---|---|---|
| 2026-08-18 | Kurk Morgan C S | Tax withholding | 1,780 | $0.15 | 82,468 |
| 2026-07-10 | Vivek Vibhu | Tax withholding | 898 | $0.25 | 113,561 |
| 2026-06-01 | Cada-Bartoli Melissa Elizabeth | Tax withholding | 59 | $0.30 | 6,331 |
| 2026-05-18 | Kurk Morgan C S | Tax withholding | 1,721 | $0.29 | 84,248 |
| 2026-04-10 | Vivek Vibhu | Tax withholding | 1,030 | $0.10 | 114,459 |
| 2026-02-27 | Cada-Bartoli Melissa Elizabeth | Tax withholding | 59 | $1.12 | 6,390 |
| 2026-02-18 | Kurk Morgan C S | Tax withholding | 2,109 | $1.21 | 85,969 |
| 2026-01-10 | Vivek Vibhu | Tax withholding | 895 | $1.49 | 115,489 |
| 2025-12-01 | Cada-Bartoli Melissa Elizabeth | Tax withholding | 50 | $1.83 | 6,449 |
| 2025-11-18 | Kurk Morgan C S | Tax withholding | 1,788 | $2.61 | 88,078 |
| 2025-10-10 | Vivek Vibhu | Tax withholding | 895 | $0.77 | 116,384 |
| 2025-09-01 | Cada-Bartoli Melissa Elizabeth | Tax withholding | 48 | $0.76 | 6,499 |
| 2025-08-18 | Kurk Morgan C S | Tax withholding | 14,300 | $0.69 | 89,866 |
| 2025-08-15 | Sayer Jacob | Tax withholding | 550 | $0.70 | 26,855 |
| 2025-07-10 | Vivek Vibhu | Tax withholding | 3,579 | $0.44 | 117,279 |
| 2025-06-01 | Cada-Bartoli Melissa Elizabeth | Tax withholding | 59 | $0.32 | 6,547 |
| 2025-05-16 | Sayer Jacob | Tax withholding | 2,595 | $0.47 | 27,405 |
| 2025-03-28 | Cada-Bartoli Melissa Elizabeth | Tax withholding | 42 | $0.70 | 6,606 |
| 2025-02-28 | Cada-Bartoli Melissa Elizabeth | Tax withholding | 59 | $0.82 | 6,648 |
| 2024-12-27 | Cada-Bartoli Melissa Elizabeth | Tax withholding | 34 | $0.86 | 4,846 |
| 2024-12-02 | Cada-Bartoli Melissa Elizabeth | Open-market sale | 50 | $1.23 | 4,880 |
| 2024-11-18 | Cada-Bartoli Melissa Elizabeth | — | — | — | 4,930 |
| 2024-08-23 | Nirwan Archana | Tax withholding | 669 | $1.78 | 31,528 |
| 2024-08-01 | Becerril John Monroy | Tax withholding | 147 | $2.03 | 7,730 |
| 2024-07-10 | Vivek Vibhu | Grant / award | 40,000 | $0.00 | 120,858 |
| 2024-05-24 | Nirwan Archana | Tax withholding | 2,677 | $3.25 | 32,197 |
| 2024-05-16 | Kurk Morgan C S | Grant / award (derivative) | 500,000 | $0.00 | 500,000 |
| 2024-05-16 | Sayer Jacob | Grant / award (derivative) | 200,000 | $0.00 | 200,000 |
| 2024-05-16 | Sayer Jacob | Grant / award | 30,000 | $0.00 | 30,000 |
| 2024-05-01 | Becerril John Monroy | Tax withholding | 147 | $3.75 | 6,731 |
| 2024-03-18 | Becerril John Monroy | Grant / award (derivative) | 30,000 | $0.00 | 30,000 |
| 2024-03-18 | de Graaf Raymond | Grant / award (derivative) | 27,000 | $0.00 | 27,000 |
| 2024-03-18 | Imhoff Scott | Grant / award (derivative) | 27,000 | $0.00 | 27,000 |
| 2024-03-18 | Nirwan Archana | Grant / award (derivative) | 13,500 | $0.00 | 13,500 |
| 2024-03-18 | Rau Sally | Grant / award (derivative) | 30,000 | $0.00 | 30,000 |
| 2024-03-18 | Sheppeck Bryan | Grant / award (derivative) | 27,000 | $0.00 | 27,000 |
| 2024-03-18 | Vivek Vibhu | Grant / award (derivative) | 30,000 | $0.00 | 30,000 |
| 2024-03-13 | Vivek Vibhu | Tax withholding | 1,409 | $4.44 | 76,692 |
| 2024-03-13 | de Graaf Raymond | Tax withholding | 659 | $4.44 | 24,831 |
| 2024-02-01 | Becerril John Monroy | Tax withholding | 147 | $4.33 | 6,878 |
Source: SEC EDGAR Form 4 filings. For informational purposes only — not investment advice.