ADTRAN Holdings, Inc. (ADTN) has 4 SEC Form 4 insider filings on record in the last 90 days. That includes 1 insider purchase totalling $50K. Most recent filing: Aug. 10, 2026.
| Date | Insider | Value | Shares | Stake | Pre-planned | Links |
|---|---|---|---|---|---|---|
| Aug. 10, 2026 | Glingener Christoph Chief Technology Officer | $0 | 27,924 | +50% | No | |
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| Aug. 7, 2026 filed Aug. 6, 2026 | Santo Timothy P SVP of Finance; CFO | +$50,000 | 6,579 | +12% | No | |
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| July 28, 2026 filed July 24, 2026 | Glingener Christoph Chief Technology Officer | $0 | 9,384 | +20% | No | |
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| July 6, 2026 filed July 1, 2026 | DelSanto Anne Director | $0 | 4,399 | New | No | |
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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.
Real-time Telegram alerts the moment a Form 4 is filed. Filings shown here are delayed by 72 hours.
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