CALX · Insider Trading
CALIX, INC.
Every open-market purchase and sale reported by CALX officers, directors and 10%+ beneficial owners on SEC Form 4, which must be filed within two business days of the transaction. Sales often reflect scheduled 10b5-1 plans or tax withholding rather than a directional view, so read counts alongside the size and the filer.
| Filed | Insider | Role | Type | Shares | Value |
|---|---|---|---|---|---|
| 2026-09-29 | Carl Russo | Director | A | +17,603 deriv. | — |
| 2026-07-28 | Carl Russo | Director | Sell | −75,000 | −$2.71M |
| 2026-05-18 | Christopher J Bowick | Director | A | +4,967 | — |
| 2026-05-18 | Wade Oosterman | Director | A | +4,967 | — |
| 2026-05-18 | Rajatish Mukherjee | Director | A | +4,967 | — |
| 2026-05-18 | Kevin Robert Peters | Director | MIXED | +4,967 | — |
| 2026-05-18 | Michael J Berry | Director | A | +4,967 | — |
| 2026-05-18 | Kathleen M Crusco | Director | A | +4,967 | — |
| 2026-05-18 | Kira Makagon | Director | A | +4,967 | — |
| 2026-05-18 | Carl Russo | Director | A | +4,967 | — |
| 2026-04-28 | Carl Russo | Director | Sell | −25,000 | −$1.08M |
| 2026-04-10 | Carl Russo | Director | G | −40,000 | — |
| 2026-02-26 | Carl Russo | Director | M | +10,000 | +$126.30K |
| 2026-02-17 | John Durocher | COO | A | +439 | +$19.90K |
| 2026-02-17 | Shane Todd Marshall Eleniak | Chief Product Officer | A | +195,000 deriv. | — |
| 2026-02-17 | Cory Sindelar | Chief Financial Officer | A | +439 | +$19.90K |
| 2026-02-17 | Michael Weening | President & CEO | A | +439 | +$19.90K |
| 2026-02-04 | Carl Russo | Director | Sell | −25,000 | −$1.18M |
| 2026-02-03 | Cory Sindelar | Chief Financial Officer | M | +27,000 | +$136.35K |
| 2026-01-08 | Carl Russo | Director | M | +10,000 | +$126.30K |
| 2026-01-05 | Carl Russo | Director | A | +11,663 deriv. | — |
| 2025-11-25 | Carl Russo | Director | M | +10,000 | +$126.30K |
| 2025-11-18 | Carl Russo | Director | M | +10,000 | +$126.30K |
| 2025-11-12 | Shane Todd Marshall Eleniak | Chief Product Officer | MIXED | — | −$1.35M |
| 2025-11-12 | Cory Sindelar | Chief Financial Officer | MIXED | — | −$3.01M |
| 2025-11-06 | Carl Russo | Director | MIXED | −220,000 | −$24.39M |
| 2025-11-06 | Shane Todd Marshall Eleniak | Chief Product Officer | MIXED | — | −$2.92M |
| 2025-11-03 | Michael Weening | President & CEO | MIXED | — | −$15.91M |
| 2025-11-03 | Cory Sindelar | Chief Financial Officer | MIXED | — | −$1.25M |
| 2025-10-01 | Carl Russo | Director | A | +10,329 deriv. | — |
| 2025-09-11 | Michael Weening | President & CEO | MIXED | — | −$9.56M |
| 2025-09-08 | Michael Weening | President & CEO | MIXED | — | −$1.25M |
| 2025-09-02 | Michael Weening | President & CEO | MIXED | — | −$6.57M |
| 2025-08-29 | Cory Sindelar | Chief Financial Officer | MIXED | — | −$549.50K |
| 2025-08-15 | Cory Sindelar | Chief Financial Officer | A | +270 | +$9.10K |
| 2025-08-15 | Michael Weening | President & CEO | A | +305 | +$10.27K |
| 2025-08-05 | Michael Weening | President & CEO | MIXED | — | −$3.62M |
| 2025-07-29 | Carl Russo | Director | Sell | −25,000 | −$1.38M |
| 2025-07-24 | Cory Sindelar | Chief Financial Officer | MIXED | — | −$509.50K |
| 2025-07-24 | Michael Weening | President & CEO | MIXED | — | −$9.90M |
| 2025-07-16 | Carl Russo | Director | A | +11,561 deriv. | — |
| 2025-07-01 | Cory Sindelar | Chief Financial Officer | MIXED | — | −$469.50K |
| 2025-06-03 | Michael Weening | President & CEO | MIXED | — | −$4.03M |
| 2025-05-12 | Kevin Robert Peters | Director | A | +4,689 | — |
| 2025-05-12 | Christopher J Bowick | Director | A | +4,689 | — |
| 2025-05-12 | Wade Oosterman | Director | A | +4,689 | — |
| 2025-05-12 | Kathleen M Crusco | Director | A | +4,689 | — |
| 2025-05-12 | Rajatish Mukherjee | Director | A | +4,689 | — |
| 2025-05-12 | Carl Russo | Director | A | +4,689 | — |
| 2025-05-12 | Kira Makagon | Director | A | +4,689 | — |
| Insider | Role | Shares Held | Value |
|---|---|---|---|
| Carl Russo | Director | 5,527,225 | $208.27M |
| Kevin Robert Peters | Director | 130,717 | $4.93M |
| Cory Sindelar | Chief Financial Officer | 103,994 | $3.92M |
| Christopher J Bowick | Director | 71,583 | $2.70M |
| Kathleen M Crusco | Director | 64,361 | $2.43M |
| Kira Makagon | Director | 43,931 | $1.66M |
| Michael Weening | President & CEO | 16,556 | $623.83K |
| Wade Oosterman | Director | 12,156 | $458.04K |
| Michael J Berry | Director | 9,656 | $363.84K |
| Rajatish Mukherjee | Director | 9,656 | $363.84K |
| John Durocher | COO | 2,367 | $89.19K |
Form 4 reports a change in beneficial ownership by an officer, director or 10%+ holder, and must be filed within two business days of the transaction — so this is close to real time, unlike the 45-day-lagged 13F institutional data.
Transaction codes matter more than the raw buy/sell count. Code P is an open-market purchase — an insider choosing to buy with their own money, which is the signal most research treats as informative. Code S is a sale, but sales are frequently pre-scheduled under a 10b5-1 plan or cover tax withholding on vesting equity, so a run of sales often says nothing directional. Codes A and M are grants and option exercises rather than open-market decisions.
Full filing history and per-insider positions are on the CALX quote page; the site-wide leaderboard is on the insider transactions hub.
Market data may be delayed, incomplete, or inaccurate. Not a recommendation to buy, sell, or hold any security. Verify quotes with your broker before trading. See Terms §17.