SEC Form 4 · Updated Daily
(CALX)
Insider 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 |
|---|---|---|---|---|
| Russo Carl | 10%+ Owner · Director | 1,569,188 | 2026-07-27 | S |
| SINDELAR CORY | Officer | 103,994 | 2026-02-14 | A |
| BOWICK CHRISTOPHER J | Director | 71,583 | 2026-05-14 | A |
| CRUSCO KATHLEEN M | Director | 64,361 | 2026-05-14 | A |
| Makagon Kira | Director | 43,931 | 2026-05-14 | A |
| Weening Michael | Director · Officer | 16,556 | 2026-02-14 | A |
| Oosterman Wade | Director | 12,156 | 2026-05-14 | A |
| BERRY MICHAEL J | Director | 9,656 | 2026-05-14 | A |
| Peters Kevin Robert | Director | 9,656 | 2026-05-14 | A |
| Mukherjee Rajatish | Director | 9,656 | 2026-05-14 | A |
| Durocher John | Officer | 2,367 | 2026-02-14 | A |
| Eleniak Shane Todd Marshall | Officer | 0 | 2025-11-10 | S |
Recent Filings
| Date | Owner | Activity | Shares | Price | Owned After |
|---|---|---|---|---|---|
| 2026-07-27 | Russo Carl | Open-market sale | 75,000 | $36.20 | 1,569,188 |
| 2026-06-29 | Russo Carl | Grant / award (derivative) | 15,999 | $0.00 | 15,999 |
| 2026-05-14 | Makagon Kira | Grant / award | 4,967 | $0.00 | 43,931 |
| 2026-05-14 | Russo Carl | Grant / award | 4,967 | $0.00 | 3,958,037 |
| 2026-05-14 | CRUSCO KATHLEEN M | Grant / award | 4,967 | $0.00 | 64,361 |
| 2026-05-14 | Peters Kevin Robert | Grant / award | 4,967 | $0.00 | 9,656 |
| 2026-05-14 | Oosterman Wade | Grant / award | 4,967 | $0.00 | 12,156 |
| 2026-05-14 | Mukherjee Rajatish | Grant / award | 4,967 | $0.00 | 9,656 |
| 2026-05-14 | BERRY MICHAEL J | Grant / award | 4,967 | $0.00 | 9,656 |
| 2026-05-14 | BOWICK CHRISTOPHER J | Grant / award | 4,967 | $0.00 | 71,583 |
| 2026-04-27 | Russo Carl | Open-market sale | 4,091 | $43.75 | 1,644,188 |
| 2026-04-27 | Russo Carl | Open-market sale | 20,909 | $43.17 | 1,648,279 |
| 2026-04-08 | Russo Carl | Gift | 40,000 | $0.00 | 3,953,070 |
| 2026-03-30 | Russo Carl | Grant / award (derivative) | 11,753 | $0.00 | 11,753 |
| 2026-02-25 | Russo Carl | Option exercise (derivative) | 10,000 | $0.00 | 560,000 |
| 2026-02-25 | Russo Carl | Option exercise | 10,000 | $12.63 | 3,993,070 |
| 2026-02-14 | SINDELAR CORY | Grant / award | 439 | $45.32 | 103,994 |
| 2026-02-14 | Durocher John | Grant / award | 439 | $45.32 | 2,367 |
| 2026-02-14 | Weening Michael | Grant / award | 439 | $45.32 | 16,556 |
| 2026-02-12 | SINDELAR CORY | Grant / award (derivative) | 170,000 | $0.00 | 170,000 |
| 2026-02-12 | Eleniak Shane Todd Marshall | Grant / award (derivative) | 195,000 | $0.00 | 195,000 |
| 2026-02-12 | Durocher John | Grant / award (derivative) | 195,000 | $0.00 | 195,000 |
| 2026-02-12 | Weening Michael | Grant / award (derivative) | 217,500 | $0.00 | 217,500 |
| 2026-02-03 | Russo Carl | Open-market sale | 11,523 | $47.66 | 1,669,188 |
| 2026-02-03 | Russo Carl | Open-market sale | 13,477 | $46.93 | 1,680,711 |
| 2026-02-02 | SINDELAR CORY | Option exercise (derivative) | 27,000 | $0.00 | 148,000 |
| 2026-02-02 | SINDELAR CORY | Option exercise | 27,000 | $5.05 | 103,555 |
| 2026-01-07 | Russo Carl | Option exercise (derivative) | 10,000 | $0.00 | 570,000 |
| 2026-01-07 | Russo Carl | Option exercise | 10,000 | $12.63 | 3,983,070 |
| 2026-01-02 | Russo Carl | Grant / award (derivative) | 11,663 | $0.00 | 11,663 |
| 2025-11-24 | Russo Carl | Option exercise (derivative) | 10,000 | $0.00 | 580,000 |
| 2025-11-24 | Russo Carl | Option exercise | 10,000 | $12.63 | 3,973,070 |
| 2025-11-17 | Russo Carl | Option exercise (derivative) | 10,000 | $0.00 | 590,000 |
| 2025-11-17 | Russo Carl | Option exercise | 10,000 | $12.63 | 3,963,070 |
| 2025-11-10 | Eleniak Shane Todd Marshall | Option exercise (derivative) | 24,000 | $0.00 | 24,000 |
| 2025-11-10 | Eleniak Shane Todd Marshall | Open-market sale | 24,000 | $64.14 | 0 |
| 2025-11-10 | Eleniak Shane Todd Marshall | Option exercise | 24,000 | $8.03 | 24,000 |
| 2025-11-06 | Russo Carl | Option exercise (derivative) | 200,000 | $0.00 | 600,000 |
| 2025-11-06 | Russo Carl | Option exercise | 200,000 | $12.63 | 3,953,070 |
| 2025-11-06 | SINDELAR CORY | Option exercise (derivative) | 50,000 | $0.00 | 175,000 |
Source: SEC EDGAR Form 4 filings. For informational purposes only — not investment advice.