Updated Jul 16, 2026 · Last SEC filing 2025-12-17
DZS INC. (DZSI) — no SEC Form 4 insider filings recorded in the last 90 days. InsiderAlpha tracks every DZSI SEC filing — Form 4, Form 144, and 8-K — in real time, including Rule 10b5-1 plan detection.
| SEC CIK | 0001101680 |
|---|
| Date | Insider | Role | Transaction | Shares | Price | Value | Filing |
|---|---|---|---|---|---|---|---|
| DASAN NETWORKS, INC | Insider | S — Open-market sale | 9.09M | $0.00 | $909 | SEC | |
| VOGT CHARLES D | President & CEO | P — Open-market purchase | 10.0K | $0.85 | $8K | SEC | |
| Bross Matthew W | Director | P — Open-market purchase | 9.0K | $0.86 | $8K | SEC | |
| Bross Matthew W | Director | P — Open-market purchase | 1.0K | $0.88 | $875 | SEC | |
| Ferguson Justin K. | Chief Legal Officer | F — Tax withholding / forfeiture | 2.2K | $0.56 | $1K | SEC | |
| Alonso Miguel | Chief Product Officer | M — Option exercise | 1.2K | — | — | SEC | |
| Alonso Miguel | Chief Product Officer | F — Tax withholding / forfeiture | 420 | $0.56 | $235 | SEC | |
| Ferguson Justin K. | Chief Legal Officer | M — Option exercise | 6.7K | — | — | SEC | |
| Yoo Choon Yul | Director | M — Option exercise | 25.0K | — | — | SEC | |
| Bross Matthew W | Director | M — Option exercise | 25.0K | — | — | SEC | |
| Carbone Barbara | Director | M — Option exercise | 25.0K | — | — | SEC | |
| Choi Woong Gee | Director | M — Option exercise | 25.0K | — | — | SEC | |
| Jackson Todd | Director | M — Option exercise | 25.0K | — | — | SEC | |
| Kim Joon Kyung | Director | M — Option exercise | 25.0K | — | — | SEC |
All transactions sourced from SEC EDGAR Form 4 filings for DZS INC. (DZSI). Updated in real time as new filings are submitted to the SEC.
SEC Form 4 transactions are reported with a one-letter code indicating the type of transaction. Common codes you'll see in DZSI insider filings:
| P | Open-market purchase by the insider |
|---|---|
| S | Open-market sale by the insider |
| A | Grant, award, or other acquisition from the issuer |
| M | Exercise or conversion of derivative security (e.g. options) |
| F | Payment of exercise price or tax liability via share withholding |
| G | Bona-fide gift of securities |
| D | Disposition to the issuer (e.g. share buyback participation) |
| J | Other acquisition or disposition |
| X | Exercise of in-the-money or at-the-money derivative security |
| C | Conversion of derivative security |
| V | Transaction voluntarily reported earlier than required |
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