As of the latest Form 4 filed Jul 6, 2026.
What ADTRAN Inc insiders — officers, directors and 10% owners — have bought and sold in their own stock, straight from their SEC Form 4 filings. Values are shares × the reported transaction price where both are disclosed.
Buys plotted up, sells down; bar height is the disclosed dollar value (shares × reported price). Our Form 4 history is only complete from mid-2026, so early months are sparse — the series fills in as more filings land. Open-market purchases and sales only.
Newest filing first — the 30 most recent filings for ADTN.
| Filed | Trade date | Insider | Transaction | Shares | Price | Value | 10b5-1 | Filing |
|---|---|---|---|---|---|---|---|---|
| 2026-07-06 | 2026-07-01 | DelSanto Anne Director | AAward | +4.40K | $0.00 | $0.00 | No | Form 4 ↗ |
| 2026-05-22 | 2026-05-20 | Wilson James Denson Jr Chief Revenue Officer | GGift | −10.5K | $0.00 | $0.00 | No | Form 4 ↗ |
| 2026-05-22 | 2026-05-20 | Wilson James Denson Jr, Chief Revenue Officer | SSale | −9.33K | $14.72 | $137K | No | Form 4 ↗ |
| 2026-05-11 | 2026-05-08 | Glingener Christoph Chief Technology Officer | SSale | −22.3K | $15.00 | $334K | Yes (planned) | Form 4 ↗ |
| 2026-05-11 | 2026-05-08 | Glingener Christoph, Chief Technology Officer | MExercise | +22.3K | $12.17 | $271K | Yes (planned) | Form 4 ↗ |
| 2026-05-11 | 2026-05-07 | Glingener Christoph, Chief Technology Officer | SSale | −84.9K | $15.06 | $1.28M | Yes (planned) | Form 4 ↗ |
| 2026-05-11 | 2026-05-07 | Glingener Christoph, Chief Technology Officer | MExercise | +84.9K | $12.17 | $1.03M | Yes (planned) | Form 4 ↗ |
| 2026-05-11 | 2026-05-07 | Glingener Christoph, Chief Technology Officer | SSale | −41.2K | $14.73 | $607K | Yes (planned) | Form 4 ↗ |
| 2026-05-11 | 2026-05-07 | Glingener Christoph, Chief Technology Officer | MExercise | +41.2K | $7.01 | $289K | Yes (planned) | Form 4 ↗ |
| 2026-04-03 | 2026-04-01 | Wilson James Denson Jr Chief Revenue Officer | AAward | +24.9K | $0.00 | $0.00 | No | Form 4 ↗ |
| 2026-04-03 | 2026-04-01 | Santo Timothy P SVP of Finance; CFO | AAward | +28.3K | $0.00 | $0.00 | No | Form 4 ↗ |
| 2026-04-03 | 2026-04-01 | STANTON THOMAS R Chairman & CEO | AAward | +171K | $0.00 | $0.00 | No | Form 4 ↗ |
| 2026-03-23 | 2026-03-19 | Santo Timothy P SVP of Finance; CFO | FTax | −1.50K | $11.90 | $17.9K | No | Form 4 ↗ |
| 2026-03-05 | 2026-03-04 | Jacqueline Hourigan Rice Director | SSale | −14.4K | $10.29 | $148K | No | Form 4 ↗ |
| 2026-01-28 | 2026-01-26 | Wilson James Denson Jr Chief Revenue Officer | FTax | −1.09K | $9.24 | $10.0K | No | Form 4 ↗ |
| 2026-01-28 | 2026-01-26 | Wilson James Denson Jr, Chief Revenue Officer | AAward | +3.78K | $0.00 | $0.00 | No | Form 4 ↗ |
| 2026-01-28 | 2026-01-26 | STANTON THOMAS R Chairman & CEO | FTax | −12.4K | $9.24 | $115K | No | Form 4 ↗ |
| 2026-01-28 | 2026-01-26 | STANTON THOMAS R, Chairman & CEO | AAward | +28.0K | $0.00 | $0.00 | No | Form 4 ↗ |
| 2026-01-27 | 2026-01-26 | Wilson James Denson Jr Chief Revenue Officer | FTax | −998.00 | $9.73 | $9.71K | No | Form 4 ↗ |
| 2026-01-27 | 2026-01-26 | STANTON THOMAS R Chairman & CEO | FTax | −14.4K | $9.73 | $140K | No | Form 4 ↗ |
| 2026-01-27 | 2026-01-24 | Wilson James Denson Jr Chief Revenue Officer | FTax | −1.23K | $9.55 | $11.7K | No | Form 4 ↗ |
| 2026-01-27 | 2026-01-24 | STANTON THOMAS R Chairman & CEO | FTax | −17.5K | $9.55 | $167K | No | Form 4 ↗ |
| 2026-01-22 | 2026-01-20 | Wilson James Denson Jr Chief Revenue Officer | FTax | −765.00 | $9.24 | $7.07K | No | Form 4 ↗ |
| 2026-01-22 | 2026-01-20 | STANTON THOMAS R Chairman & CEO | FTax | −10.2K | $9.24 | $94.7K | No | Form 4 ↗ |
| 2026-01-05 | 2025-12-31 | Walker Kathryn A Director | AAward | +13.8K | $0.00 | $0.00 | No | Form 4 ↗ |
| 2026-01-05 | 2025-12-31 | Theodosopoulos Nikos Director | AAward | +13.8K | $0.00 | $0.00 | No | Form 4 ↗ |
| 2026-01-05 | 2025-12-31 | McCray Gregory James Director | AAward | +13.8K | $0.00 | $0.00 | No | Form 4 ↗ |
| 2026-01-05 | 2025-12-31 | Nair Balan Director | AAward | +13.8K | $0.00 | $0.00 | No | Form 4 ↗ |
| 2026-01-05 | 2025-12-31 | HUSS H FENWICK Director | AAward | +13.8K | $0.00 | $0.00 | No | Form 4 ↗ |
| 2026-01-05 | 2025-12-31 | Jacqueline Hourigan Rice Director | AAward | +13.8K | $0.00 | $0.00 | No | Form 4 ↗ |
Insiders — a company’s officers, directors and holders of more than 10% of its stock — must report any trade in that stock to the SEC on a Form 4 within two business days. Each row here is one transaction from those filings.
The transaction code tells you what happened: Purchase (P) and Sale (S) are open-market trades — the ones markets watch most; Award (A) is a granted stock or unit, Option exercise (M) converts options into shares, and Gift (G) is a transfer for no consideration. Awards, exercises and gifts are largely compensation or administrative, not a directional bet.
One caveat on sales: many are made under a Rule 10b5-1 plan scheduled months in advance, so a sale is not automatically a bearish signal. Insider activity is a noisy input — read it alongside the filings, not on its own.
See also ADTN’s full analysis or the market-wide insider trading feed. The tabs above jump to ADTN’s other SEC data.
Source: SEC Form 4 filings for ADTN, parsed from EDGAR. Transaction prices are as reported in the filing — SEC public-domain data, not market quotes. Values are shares × reported price where both are disclosed; grants and gifts often carry no price. A delayed record of what insiders reported, not a live position or a recommendation.
Research and education only — not financial advice. TENKis not a registered investment adviser or broker-dealer and gives no personalized advice. Every call is impersonal — identical for all users, generated on a schedule from SEC filings plus a delayed/third-party price feed — may be wrong or out of date, and is not a recommendation to buy or sell any security. The operator and an affiliated trading operation may hold or trade the securities TENK rates; see Disclosures. Past performance does not guarantee future results. Do your own research.