Form4.ai tracks every SEC insider trade in real time. See every ADTN insider filing with a free account — no card.
See every ADTN insider filing — free account, no card.
Free accountADTRAN Holdings, Inc. (ADTN) has 3 SEC Form 4 insider filings on record in the last 90 days. That includes 1 insider purchase totalling $50K. Most recent filing: Nov. 2, 2026.
Open-market value, last 90 days
Form 4 filings by type, last 90 days
| Date | Insider | Trade | Value | Price since buy |
|---|---|---|---|---|
| Nov 2, 2026 SEC filing | Terlinde Christian Director | Grant / award | — | — |
| Aug 10, 2026 SEC filing | Glingener Christoph Chief Technology Officer | Grant / award | — | — |
| Aug 7, 2026 SEC filing | Santo Timothy P SVP of Finance; CFO | Bought | $50,000 | -6.6% 30D |
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Form 4 is the filing company officers, directors and 10% shareholders must submit to the SEC within two business days of trading their own company's stock. Open-market purchases generally carry more signal than sales, which are often scheduled in advance. More on how this works.