As of March 23, 2026, Calix's top three insider holders are Carl Russo (Director, 3.99Mn shares), Carl Russo (Director, 1.67Mn shares), Donald J Listwin (Director, 497.53K shares).
| Holder | Position | Shares (Direct) | Shares (Indirect) | Report Date |
|---|---|---|---|---|
| Carl Russo | Chairman | 3,993,070 | 0 | 26 Feb, 2026 |
| Carl Russo | President And Ceo | 0 | 1,669,188 | 04 Feb, 2026 |
| Kevin Robert Peters | - | 130,717 | 0 | 12 May, 2025 |
| J Daniel Plants | - | 0 | 117,865 | 29 Oct, 2021 |
| Christopher J Bowick | - | 66,616 | 0 | 12 May, 2025 |
| Michael Matthews | - | 64,000 | 0 | 03 Nov, 2022 |
| Kira Makagon | - | 38,964 | 0 | 12 May, 2025 |
| Michael Weening | President Ceo | 16,556 | 0 | 17 Feb, 2026 |
| Wade Oosterman | - | 7,189 | 0 | 12 May, 2025 |
| Rajatish Mukherjee | - | 4,689 | 0 | 12 May, 2025 |
| Michael J Berry | - | 4,689 | 0 | 12 May, 2025 |
| John Durocher | Coo | 2,367 | 0 | 17 Feb, 2026 |
* Please note that the shares above only reflect shares from the fund portfolio and the institutional portfolio. Shares from the personal portfolio are excluded from this Institutional Ownership Page. See these insiders' latest transactions here on Insider Page.
| Transaction Date | Insider Name | Security Class | Transaction Type | Shares Traded | Price | Shares Remaining | Ownership | Code |
|---|---|---|---|---|---|---|---|---|
| 30 Mar, 2026 | Carl Russo | Stock Options (right to buy) | A | 11,753 | $0.00 | 11,753 | D | A |
| 25 Feb, 2026 | Carl Russo | Common Stock | A | 10,000 | $12.63 | 3,993,070 | D | M |
| 25 Feb, 2026 | Carl Russo | Stock Option (right to buy) | D | 10,000 | $0.00 | 560,000 | D | M |
| 14 Feb, 2026 | Michael Weening | Common Stock | A | 439 | $45.32 | 16,556 | D | A |
| 12 Feb, 2026 | Shane Todd Marshall Eleniak | Stock Option | A | 195,000 | $0.00 | 195,000 | D | A |
| 14 Feb, 2026 | John Durocher | Common Stock | A | 439 | $45.32 | 2,367 | D | A |
| 12 Feb, 2026 | John Durocher | Stock Option (right to buy) | A | 195,000 | $0.00 | 195,000 | D | A |
| 12 Feb, 2026 | Michael Weening | Stock Option (right to buy) | A | 217,500 | $0.00 | 217,500 | D | A |
| 03 Feb, 2026 | Carl Russo | Common Stock | D | 13,477 | $46.93 | 1,680,711 | I | S |
| 03 Feb, 2026 | Carl Russo | Common Stock | D | 11,523 | $47.66 | 1,669,188 | I | S |
| 07 Jan, 2026 | Carl Russo | Common Stock | A | 10,000 | $12.63 | 3,983,070 | D | M |
| 07 Jan, 2026 | Carl Russo | Stock Option (right to buy) | D | 10,000 | $0.00 | 570,000 | D | M |
| 02 Jan, 2026 | Carl Russo | Employee Stock Options (right to buy) | A | 11,663 | $0.00 | 11,663 | D | A |
| 24 Nov, 2025 | Carl Russo | Common Stock | A | 10,000 | $12.63 | 3,973,070 | D | M |
| 24 Nov, 2025 | Carl Russo | Stock Option (right to buy) | D | 10,000 | $0.00 | 580,000 | D | M |
| 17 Nov, 2025 | Carl Russo | Common Stock | A | 10,000 | $12.63 | 3,963,070 | D | M |
| 17 Nov, 2025 | Carl Russo | Stock Option (right to buy) | D | 10,000 | $0.00 | 590,000 | D | M |
| 10 Nov, 2025 | Shane Todd Marshall Eleniak | Common Stock | A | 24,000 | $8.03 | 24,000 | D | M |
| 10 Nov, 2025 | Shane Todd Marshall Eleniak | Common Stock | D | 24,000 | $64.14 | 0 | D | S |
| 10 Nov, 2025 | Shane Todd Marshall Eleniak | Stock Option (right to buy) | D | 24,000 | $0.00 | 24,000 | D | M |