# ADTRAN Holdings, Inc. (ADTN) insider trading, Q3 2026

Canonical: https://sec-api.dev/insider-trading/adtn

> 4 non-derivative transactions: 1 purchase ($50K), 0 sales. CIK 926282.

| Date | Insider | Relationship | Code | Shares | Price | Owned after | Filing |
| --- | --- | --- | --- | --- | --- | --- | --- |
| 2026-08-10 | Glingener Christoph | Officer | A | 27924.0 | 0.0 | 83953.0 | https://www.sec.gov/Archives/edgar/data/926282/000119312526342317/0001193125-26-342317-index.htm |
| 2026-08-06 | Santo Timothy P | Officer | P | 6579.0 | 7.6 | 59924.0 | https://www.sec.gov/Archives/edgar/data/926282/000119312526340206/0001193125-26-340206-index.htm |
| 2026-07-24 | Glingener Christoph | Officer | A | 9384.0 | 0.0 | 56029.0 | https://www.sec.gov/Archives/edgar/data/926282/000119312526320947/0001193125-26-320947-index.htm |
| 2026-07-01 | DelSanto Anne | Director | A | 4399.0 | 0.0 | 4399.0 | https://www.sec.gov/Archives/edgar/data/926282/000119312526296161/0001193125-26-296161-index.htm |

Source: https://www.sec.gov/data-research/sec-markets-data/insider-transactions-data-sets

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