ADTRAN CEO buys $600,900 of stock after Q3 earnings report

By Tom Whitfield

ADTRAN chairman and CEO Tom Stanton bought 150,000 shares in the open market on Friday, Nov. 6, 2026, for about $600,900, at a weighted average price of $4.006. A Form 4 filed the following Monday reported that the purchase raised his direct holding to 1,410,890 shares, an increase of about 12%.

Chief financial officer Timothy Santo bought 17,820 shares that day at $4.1632, committing about $74,200. His stake rose to 77,744 shares, about 30%, through the purchase.

Both filings use transaction code P, which denotes an open-market purchase. Neither filing checked the box for a Rule 10b5-1 trading plan, so the documents do not describe the trades as prearranged.

Both executives therefore made substantial cash commitments to the fiber and telecom equipment maker without a disclosed standing trading plan.

How does the $5.33 valuation frame the trade?

Stanton’s filing also records a non-cash event on Nov. 3. ADTRAN’s equity deferral program, terminated in November 2025, distributed 225,775 shares to him, while the company withheld 91,439 to cover taxes and valued the shares at $5.33 each.

His Nov. 6 market purchase came at about 26% below that valuation. The deferred distribution did not involve a cash purchase, but it gave the filing a recent reference price for assessing the market trade.

The $5.33 figure was a filing valuation, not a target price presented by ADTRAN.

What did ADTRAN report for the third quarter?

The buying followed ADTRAN’s Nov. 2 report, which showed revenue of $281.2 million, up 0.6% from a year earlier. Stanton said: “slightly below the midpoint of our guidance range as we continued to navigate a challenging supply environment.”

ADTRAN recorded a GAAP loss of $0.10 per diluted share and non-GAAP earnings of $0.09 per share. Its 42.1% non-GAAP gross margin included about 200 basis points of benefit from IEEPA tariff refunds.

The quarterly comparison was:

• Q3 2026: $281.2 million in revenue and a GAAP diluted loss of $0.10 per share.
• Q2 2026: $281.1 million in revenue and a GAAP diluted loss of $0.13 per share.
• Q3 2025: $279.4 million in revenue and a GAAP diluted loss of $0.12 per share.

Revenue was almost unchanged sequentially and year over year, while the gross-margin result included a 200-basis-point tariff benefit.

What does fourth-quarter guidance require?

ADTRAN guided fourth-quarter revenue to $272 million-$292 million and non-GAAP operating margin to 1%-5%. Stanton pointed to growth in optical networking and with hyperscale customers as AI infrastructure reshapes network spending.

For ADTRAN, those demand pockets offer a route above the current revenue base. The supply environment remains the counterweight, and the earnings release did not quantify how much hyperscale or optical growth could offset it.

The near-term commercial test is whether AI-linked demand can overcome supply constraints within the guided range.

How unusual are these purchases?

Stanton’s prior open-market purchase came on Nov. 24, 2025: 40,928 shares at a weighted average $7.33, worth about $300,000. Before that, he bought 31,200 shares at $16.05, worth about $500,800, in April 2015.

A scan of all 121 of Stanton’s Form 4 filings on EDGAR found no other open-market buys apart from small dividend-reinvestment purchases in 2022. The Nov. 6, 2026 purchase was the largest by dollar value in that record and carried a price about 45% below his November 2025 purchase.

Santo now has three open-market purchases on record. Before Nov. 6, he bought 6,150 shares at $8.02 in November 2025 and 6,579 shares at $7.60 in August 2026, each worth about $50,000.

The purchases extend a limited buying history, but the filings do not establish a regular program.

What should readers watch next?

The transactions increase the executives’ exposure to ADTRAN, but they do not change the company’s revenue or cost profile. The next reporting period will show whether optical and hyperscale growth can offset the supply constraints that Stanton cited.

The next test is whether optical networking and hyperscale growth can push revenue beyond ADTRAN’s $292 million fourth-quarter upper end while the supply environment remains challenging.