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ADTRAN Holdings Inc. (ADTN) institutional ownership

Latest close $10.45 Jul 22, 2026
Market cap$1.0B 52-week range SectorTechnology
Funds holding · Q4 2022
4
reported ADTN position changes
Top owners · Q1 2026
No disclosed owners are available.
Institutional activity · Q4 2022
Activity unavailable N/A
1 buyers · 3 sellers

ADTRAN Holdings Inc. (ADTN) price and institutional activity

Dates

Q4 2022

$0 bought by 1 investors
Huntington National Bank
$0 sold by 3 investors
State of Tennessee, Department of TreasuryBlue Trust, Inc. +1 more
Bought Sold Totals per quarter; hover a bar for the names.

ADTRAN Holdings Inc. (ADTN) institutional activity · 4

Investor Type Est. change Change Δ Own Date
State of Tennessee, Department of Treasury · Exited
Change −18K Δ Own −100.0% Date Q4 2022
State of Tennessee, Department of Treasury Exited· Q4 2022 −18K −100.0% Q4 2022
Blue Trust, Inc. · Exited
Change −499 Δ Own −100.0% Date Q4 2022
Blue Trust, Inc. Exited· Q4 2022 −499 −100.0% Q4 2022
Barclays PLC · Exited
Change −22 Δ Own −100.0% Date Q4 2022
Barclays PLC Exited· Q4 2022 −22 −100.0% Q4 2022
Huntington National Bank · New
Change +1 Date Q4 2022
Huntington National Bank New· Q4 2022 +1 Q4 2022
Data through Q4 2022 · filed Feb 9, 2023
4 of 4

Famous investor activity in ADTRAN Holdings Inc. (ADTN)

ADTRAN Holdings Inc. (ADTN) insider trading

Company insiders, action and economics first; trade and filed dates last.
Dates
Insider Title Type Price Qty Value Owned ΔOwn Trade date Filed date
Delsanto Anne · Director Grant (A) 4K
Owned 4K Trade date Jul 1, 2026 Filed date Jul 6, 2026
Delsanto Anne Director Grant (A) 4K 4K Jul 1, 2026 Jul 6, 2026
Wilson James Denson Jr · Officer Sell −$137K
Price $14.72 Qty −9K Owned 143K Trade date May 20, 2026 Filed date May 22, 2026
Wilson James Denson Jr Officer Sell $14.72 −9K −$137K 143K May 20, 2026 May 22, 2026
Wilson James Denson Jr · Officer Gift (G) -10K
Owned 133K Trade date May 20, 2026 Filed date May 22, 2026
Wilson James Denson Jr Officer Gift (G) -10K 133K May 20, 2026 May 22, 2026
Glingener Christoph · Officer Sell −$334K
Price $15.00 Qty −22K Owned 47K Trade date May 8, 2026 Filed date May 11, 2026
Glingener Christoph Officer Sell $15.00 −22K −$334K 47K May 8, 2026 May 11, 2026
Glingener Christoph · Officer 2 operations 0
Price $12.17 Owned 0 Trade date May 8, 2026 Filed date May 11, 2026
Glingener Christoph Officer 2 operations $12.17 0 0 May 8, 2026 May 11, 2026
Glingener Christoph · Officer 2 operations −$1.9M
Price $14.73–$15.06 Qty −126K Owned 47K Trade date May 7, 2026 Filed date May 11, 2026
Glingener Christoph Officer 2 operations $14.73–$15.06 −126K −$1.9M 47K May 7, 2026 May 11, 2026
Glingener Christoph · Officer 4 operations 0
Price $7.01–$12.17 Owned 22K Trade date May 7, 2026 Filed date May 11, 2026
Glingener Christoph Officer 4 operations $7.01–$12.17 0 22K May 7, 2026 May 11, 2026
Wilson James Denson Jr · Officer Grant (A) 25K
Owned 153K Trade date Apr 1, 2026 Filed date Apr 3, 2026
Wilson James Denson Jr Officer Grant (A) 25K 153K Apr 1, 2026 Apr 3, 2026
Santo Timothy P. · Officer Grant (A) 28K
Owned 53K Trade date Apr 1, 2026 Filed date Apr 3, 2026
Santo Timothy P. Officer Grant (A) 28K 53K Apr 1, 2026 Apr 3, 2026
Stanton Thomas R. · Director Grant (A) 171K
Owned 1.1M Trade date Apr 1, 2026 Filed date Apr 3, 2026
Stanton Thomas R. Director Grant (A) 171K 1.1M Apr 1, 2026 Apr 3, 2026
Santo Timothy P. · Officer Tax withholding or exercise payment (F) -$18K
Price $11.90 Qty -2K Owned 25K Trade date Mar 19, 2026 Filed date Mar 23, 2026
Santo Timothy P. Officer Tax withholding or exercise payment (F) $11.90 -2K -$18K 25K Mar 19, 2026 Mar 23, 2026
Jacqueline Hourigan Rice · Director Sell −$148K
Price $10.29 Qty −14K Owned 14K Trade date Mar 4, 2026 Filed date Mar 5, 2026
Jacqueline Hourigan Rice Director Sell $10.29 −14K −$148K 14K Mar 4, 2026 Mar 5, 2026
Wilson James Denson Jr · Officer 2 operations -$20K
Price $9.24–$9.73 Qty -2K Owned 128K Trade date Jan 26, 2026 Filed date Jan 28, 2026
Wilson James Denson Jr Officer 2 operations $9.24–$9.73 -2K -$20K 128K Jan 26, 2026 Jan 28, 2026
Wilson James Denson Jr · Officer Grant (A) 4K
Owned 129K Trade date Jan 26, 2026 Filed date Jan 28, 2026
Wilson James Denson Jr Officer Grant (A) 4K 129K Jan 26, 2026 Jan 28, 2026
Stanton Thomas R. · Director, Officer 2 operations -$255K
Price $9.24–$9.73 Qty -27K Owned 955K Trade date Jan 26, 2026 Filed date Jan 28, 2026
Stanton Thomas R. Director, Officer 2 operations $9.24–$9.73 -27K -$255K 955K Jan 26, 2026 Jan 28, 2026
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15 of 31 Sign in to continue to older insider transactions.

ADTRAN Holdings Inc. (ADTN) activist and large shareholders

Dates
Owner/Filer identity Shares reported % of shares outstanding Filing date
BlackRock Inc. 6.6M
% of shares outstanding 8.3% Filing date Jul 8, 2024
BlackRock Inc. 6.6M 8.3% Jul 8, 2024
Vanguard Group Inc 6.6M
% of shares outstanding 8.3% Filing date Nov 12, 2024
Vanguard Group Inc 6.6M 8.3% Nov 12, 2024
Bank of New York Mellon Corp 3.2M
% of shares outstanding 6.6% Filing date Feb 2, 2022
Bank of New York Mellon Corp 3.2M 6.6% Feb 2, 2022
William Blair Investment Management, LLC 4.9M
% of shares outstanding 6.2% Filing date Nov 14, 2024
William Blair Investment Management, LLC 4.9M 6.2% Nov 14, 2024
Dnb Asset Management AS 4.8M
% of shares outstanding 6.1% Filing date Nov 12, 2024
Dnb Asset Management AS 4.8M 6.1% Nov 12, 2024
Vanguard Portfolio Management LLC 4.9M
% of shares outstanding 6.0% Filing date Apr 28, 2026
Vanguard Portfolio Management LLC 4.9M 6.0% Apr 28, 2026
Dimensional Fund Advisors LP 2.3M
% of shares outstanding 4.6% Filing date Feb 8, 2022
Dimensional Fund Advisors LP 2.3M 4.6% Feb 8, 2022
Divisar Capital Management LLC 3.2M
% of shares outstanding 4.0% Filing date Nov 14, 2025
Divisar Capital Management LLC 3.2M 4.0% Nov 14, 2025
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ADTRAN Holdings Inc. (ADTN) ownership FAQ

Who owns ADTN?

4 reporting institutions disclosed ADTN position changes in the Q4 2022 snapshot.

How is institutional activity calculated?

For each manager, WhoBought compares accepted consecutive 13F share counts. Share change is current shares minus prior shares. Estimated dollar change is that signed share change multiplied by the split-adjusted quarter-mean close. The activity table on this page uses Q4 2022.

What are activist and large shareholder filings?

An investor crossing 5% of a share class generally files Schedule 13D for activist intent or Schedule 13G for a passive position. The technical form names appear here rather than in the activity rows.

Where does this data come from?

Ownership and institutional activity come from SEC Form 13F filings. Insider activity comes from SEC Form 4, and large-shareholder activity from SEC Schedules 13D and 13G. FMP supplies price data only. Company logos use the local verified Parqet cache with one shared fallback.

Why are ownership reports delayed?

Form 13F is a quarterly disclosure and is normally filed after the quarter ends. Every ownership and activity value therefore names its represented period; it is not presented as a live position.

How are missing table values shown?

A muted dash marks a missing table value. It means the filing omitted the value, comparable data is unavailable, or no prior position exists for comparison.