SEC Form 4
ADTRAN Holdings, Inc. (ADTN) insider trading
In the 12 months to Nov 9, 2026, 3 ADTN insiders reported open-market sales of $2.5M across 3 filings; 3 insiders bought $499.8K.
Latest filing · Last 12 months · Source: SEC EDGAR · How we count
- Open-market sales
- $2.5M
- 3 filings · 3 insiders
- Open-market purchases
- $499.8K
- 4 filings
- Pre-arranged sales (10b5-1)
- 1 of 3
- $2.2M of $2.5M sold (89%)
Who traded ADTN, and when
- Purchase
- Sale
- Sale, pre-arranged (10b5-1)
ADTN daily close from Nov 10, 2025 to Nov 6, 2026, between $4.04 and $19.40, last $4.04. 3 sale and 4 purchase filings by 6 insiders, marked at their filing dates. Christoph Glingener, Chief Technology Officer: sold $2.2M across 1 filing, first filed May 11, 2026, last May 11, 2026. Thomas R. Stanton, Chairman & CEO: bought $300.0K across 1 filing, first filed Nov 25, 2025, last Nov 25, 2025. Hourigan Rice Jacqueline, Director: sold $148.2K across 1 filing, first filed Mar 5, 2026, last Mar 5, 2026. James Denson Wilson Jr., Chief Revenue Officer: sold $137.4K across 1 filing, first filed May 22, 2026, last May 22, 2026. Nikos Theodosopoulos, Director: bought $100.4K across 1 filing, first filed Dec 1, 2025, last Dec 1, 2025. Timothy P. Santo, SVP of Finance; CFO: bought $99.3K across 2 filings, first filed Dec 1, 2025, last Aug 7, 2026.
Largest mark · tap a row for others
Christoph Glingener · Chief Technology Officer
Sale $2,219,844
148,392 shares at $14.96 avg
Filed May 11, 2026 · traded May 7
Pre-arranged (10b5-1) · close on filing date $15.68
Christoph Glingener · Chief Technology Officer
Chief Technology Officer
$2.2M soldThomas R. Stanton · Chairman & CEO
Chairman & CEO
$300.0K boughtHourigan Rice Jacqueline · Director
Director
$148.2K soldJames Denson Wilson Jr. · Chief Revenue Officer
Chief Revenue Officer
$137.4K soldNikos Theodosopoulos · Director
Director
$100.4K boughtTimothy P. Santo · SVP of Finance; CFO
SVP of Finance; CFO
$99.3K boughtOpen-market trades
7 filings in the last 12 months| Insider | Role | Sold | Bought | Filings | Pre-arranged (10b5-1) | Last filed |
|---|---|---|---|---|---|---|
| Christoph Glingener | Chief Technology Officer | $2.2M | — | 1 | 100% of sales | |
| Thomas R. Stanton | Chairman & CEO | — | $300.0K | 1 | — | |
| Hourigan Rice Jacqueline | Director | $148.2K | — | 1 | — | |
| James Denson Wilson Jr. | Chief Revenue Officer | $137.4K | — | 1 | — | |
| Nikos Theodosopoulos | Director | — | $100.4K | 1 | — | |
| Timothy P. Santo | SVP of Finance; CFO | — | $99.3K | 2 | — |
| Filed | Insider | Type | Shares | Avg price | Value | Held after | Source |
|---|---|---|---|---|---|---|---|
traded | Timothy P. Santo SVP of Finance; CFO | Purchase | 6,579 | $7.60 | $50.0K | 59,924 | |
traded | James Denson Wilson Jr. Chief Revenue Officer | Sale | 9,332 | $14.72 | $137.4K | 143,277 | |
traded | Christoph Glingener Chief Technology Officer | SalePre-arranged (10b5-1) | 148,392 | $14.96 | $2.2M | 46,645 | |
traded | Hourigan Rice Jacqueline Director | Sale | 14,406 | $10.29 | $148.2K | 13,809 | |
traded | Nikos Theodosopoulos Director | Purchase | 12,859 | $7.81 | $100.4K | 52,154 | |
traded | Timothy P. Santo SVP of Finance; CFO | Purchase | 6,150 | $8.02 | $49.3K | 26,594 | |
traded | Thomas R. Stanton Chairman & CEO | Purchase | 40,928 | $7.33 | $300.0K | 982,096 |
GET /stocks/filings/vX/form-4?tickers=ADTN&filing_date.gte=2025-11-09&sort=filing_date.desc&limit=500{
"status": "OK",
"results": [
{
"tickers": [
"ADTN"
],
"issuer_cik": "0000926282",
"owner_cik": "0001974835",
"accession_number": "0001193125-26-340206",
"form_type": "4",
"filing_date": "2026-08-07",
"period_of_report": "2026-08-06",
"issuer_name": "ADTRAN Holdings, Inc.",
"issuer_trading_symbol": "ADTN",
"owner_name": "Santo Timothy P",
"is_director": false,
"is_officer": true,
"is_ten_percent_owner": false,
"is_other": false,
"officer_title": "SVP of Finance; CFO",
"security_type": "non_derivative",
"record_type": "transaction",
"security_title": "Common Stock",
"transaction_timeliness": "O",
"aff_10b5_one": false,
"transaction_date": "2026-08-06",
"transaction_code": "P",
"equity_swap_involved": false,
"transaction_shares": 6579,
"transaction_price_per_share": 7.6,
"transaction_acquired_disposed": "A",
"shares_owned_following_transaction": 59924,
"transaction_value": 50000.399999999994,
"direct_or_indirect": "D"
},
{
"tickers": [
"ADTN"
],
"issuer_cik": "0000926282",
"owner_cik": "0001371377",
"accession_number": "0001193125-26-236824",
"form_type": "4",
"filing_date": "2026-05-22",
"period_of_report": "2026-05-20",
"issuer_name": "ADTRAN Holdings, Inc.",
"issuer_trading_symbol": "ADTN",
"owner_name": "Wilson James Denson Jr",
"is_director": false,
"is_officer": true,
"is_ten_percent_owner": false,
"is_other": false,
"officer_title": "Chief Revenue Officer",
"security_type": "non_derivative",
"record_type": "transaction",
"security_title": "Common Stock",
"transaction_timeliness": "O",
"aff_10b5_one": false,
"transaction_date": "2026-05-20",
"transaction_code": "S",
"equity_swap_involved": false,
"transaction_shares": 9332,
"transaction_price_per_share": 14.72,
"transaction_acquired_disposed": "D",
"shares_owned_following_transaction": 143277.486,
"transaction_value": 137367.04,
"direct_or_indirect": "D",
"footnotes": [
{
"id": "F1",
"description": "The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $14.69 to $14.765, inclusive. The reporting person undertakes to provide to ADTRAN Holdings, Inc. (the Issuer), any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote (1) to this Form 4."
}
]
}
]
}
// trimmed to 2 resultsThe response includes every Form 4 record; this page keeps open-market purchases and sales on common stock and removes duplicate joint-filer rows.
Other insider activity (not market trades) · 32 records
- Option exercises4 records
- Tax withholding11 records
- Grants and awards16 records
- Gifts1 record
Reported on Form 4 but not purchases or sales in the market, so not counted in the totals above.
How to read this page
- Open-market purchase or sale
- A buy or sell of the company's stock at market price. Grants, option exercises, shares withheld for tax, gifts and employee stock plan purchases are listed separately and not counted.
- Pre-arranged (10b5-1)
- The insider marked the filing as made under a trading plan set up in advance (SEC Rule 10b5-1). The mark covers the whole filing, and an unmarked filing may still be under a plan.
- Filing date
- Insiders have two business days to report a trade. Totals and the chart use the filing date, when the trade became public.
Frequently asked questions
Has ADTRAN Holdings, Inc.'s CEO sold stock?
No. Thomas R. Stanton (CEO) made no open-market sales filed as CEO in the last 12 months.
How current is ADTN’s insider data?
These are ADTN Form 4 filings from the last year, refreshed daily. The Massive Form 4 API has the full, continuously updated record.
What counts as an open-market buy or sell?
Only purchases and sales at the market price. Option exercises, grants, gifts, and shares withheld for taxes are reported on Form 4 but are left out of the buy and sell totals.
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Track ADTN insider trades with your agent
This page joins two Massive endpoints: Form 4 filings and daily prices. Ask an agent to watch for new filings:
Using the Massive API (massive.com/docs/llms.txt), check Form 4 filings for ADTN every day with transaction_code=P and tell me when an insider files an open-market purchase, with their role, shares, price and the filing link.
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