As of April 28, 2026, Calix's top three insider holders are Carl Russo (Chairman, 3.99Mn shares), Carl Russo (Chairman, 3.95Mn shares), Carl Russo (President And Ceo, 1.67Mn shares).
| Holder | Position | Shares (Direct) | Shares (Indirect) | Report Date |
|---|---|---|---|---|
| Carl Russo | Chairman | 3,993,070 | 0 | 26 Feb, 2026 |
| Carl Russo | Chairman | 3,953,070 | 0 | 10 Apr, 2026 |
| Carl Russo | President And Ceo | 0 | 1,669,188 | 04 Feb, 2026 |
| Carl Russo | President And Ceo | 0 | 1,669,188 | 04 Feb, 2026 |
| Donald J Listwin | - | 497,533 | 0 | 04 Aug, 2023 |
| Donald J Listwin | - | 0 | 310,000 | 07 Feb, 2022 |
| Michael T Everett | - | 196,779 | 0 | 05 Dec, 2022 |
| Kevin Robert Peters | - | 130,717 | 0 | 12 May, 2025 |
| Kevin Robert Peters | - | 130,717 | 0 | 12 May, 2025 |
| J Daniel Plants | - | 0 | 117,865 | 29 Oct, 2021 |
| J Daniel Plants | - | 0 | 117,865 | 29 Oct, 2021 |
| Cory Sindelar | Chief Financial Officer | 103,994 | 0 | 17 Feb, 2026 |
| Christopher J Bowick | - | 66,616 | 0 | 12 May, 2025 |
| Michael Matthews | - | 64,000 | 0 | 03 Nov, 2022 |
| Michael Matthews | - | 64,000 | 0 | 03 Nov, 2022 |
| Michael Weening | President Ceo | 16,556 | 0 | 17 Feb, 2026 |
| Michael Weening | President Ceo | 16,556 | 0 | 17 Feb, 2026 |
| Wade Oosterman | - | 7,189 | 0 | 12 May, 2025 |
| Wade Oosterman | - | 7,189 | 0 | 12 May, 2025 |
| Michael J Berry | - | 4,689 | 0 | 12 May, 2025 |
| Rajatish Mukherjee | - | 4,689 | 0 | 12 May, 2025 |
| Rajatish Mukherjee | - | 4,689 | 0 | 12 May, 2025 |
| John Durocher | Coo | 2,367 | 0 | 17 Feb, 2026 |
| 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 |
|---|---|---|---|---|---|---|---|---|
| 08 Apr, 2026 | Carl Russo | Common Stock | D | 40,000 | $0.00 | 3,953,070 | D | G |
| 30 Mar, 2026 | Carl Russo | Stock Options (right to buy) | A | 11,753 | $0.00 | 11,753 | D | A |
| 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 | 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 |
| 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 |
| 14 Feb, 2026 | Michael Weening | Common Stock | A | 439 | $45.32 | 16,556 | D | A |
| 14 Feb, 2026 | John Durocher | Common Stock | A | 439 | $45.32 | 2,367 | D | A |
| 14 Feb, 2026 | John Durocher | Common Stock | A | 439 | $45.32 | 2,367 | D | A |
| 12 Feb, 2026 | Shane Todd Marshall Eleniak | Stock Option | A | 195,000 | $0.00 | 195,000 | D | A |
| 14 Feb, 2026 | Cory Sindelar | Common Stock | A | 439 | $45.32 | 103,994 | D | A |
| 12 Feb, 2026 | Shane Todd Marshall Eleniak | Stock Option | A | 195,000 | $0.00 | 195,000 | D | A |
| 12 Feb, 2026 | Cory Sindelar | Stock Option (right to buy) | A | 170,000 | $0.00 | 170,000 | D | A |
| 12 Feb, 2026 | John Durocher | Stock Option (right to buy) | A | 195,000 | $0.00 | 195,000 | 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 |
| 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 |