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Who

Daniel T. Whalen

Director

Company insider

Files Form 4 as: Director, Harmonic; Chief Product Officer, ADTRAN Holdings; President, Network and Cloud, ARRIS International.

In numbers

Trades disclosed
74
Buys
6
Sells
1
Bought
$252K
Sold
$302K
Companies
3
Companies where not an officer
1
First trade
27 Mar 2017
Last trade
16 Mar 2026
Last filed
18 Mar 2026

Companies traded

Where they are an officer
ADTN ADTRAN HoldingsOfficer · Electronic Components & EMS · last 18 Feb 20202 buys · 0 sells
ARRIS InternationalOfficer · last 4 Apr 20190 buys · 1 sell
Everywhere else they filed: board seats, 10% stakes, other companies
HLIT HarmonicDirector · Electronic Components & EMS · last 16 Mar 20264 buys · 0 sells

Activity over time

1 Nov 2024 – 1 Oct 2026
02Nov 24May 25Nov 25Apr 26Oct 26

Buys above the line, sells below, each month.

Every trade

TradedCompanyWhatAmount
16 Mar 2026filed 18 Mar 2026HLIT Harmonicoption or derivative · Electronic Components & EMSSEC FORM 4 Code A—18,756 at $0.00filing
16 Mar 2026filed 18 Mar 2026HLIT Harmonicoption or derivative · Electronic Components & EMSSEC FORM 4 Code A—18,756 at $0.00filing
15 Feb 2026filed 18 Feb 2026HLIT HarmonicElectronic Components & EMSSEC FORM 4 Code M—16,143 at $0.00filing
15 Feb 2026filed 18 Feb 2026HLIT Harmonicoption or derivative · Electronic Components & EMSSEC FORM 4 Code M—16,143 at $0.00filing
15 Feb 2026filed 18 Feb 2026HLIT Harmonicoption or derivative · Electronic Components & EMSSEC FORM 4 Code M—16,143 at $0.00filing
15 Feb 2026filed 18 Feb 2026HLIT HarmonicElectronic Components & EMSSEC FORM 4 Code M—16,143 at $0.00filing
1 Aug 2025filed 4 Aug 2025HLIT HarmonicElectronic Components & EMSSEC FORM 4 Bought$17K2,000 at $8.25filing
30 May 2025filed 2 Jun 2025HLIT HarmonicElectronic Components & EMSSEC FORM 4 Bought$18K2,000 at $8.99filing
25 Feb 2025filed 26 Feb 2025HLIT HarmonicElectronic Components & EMSSEC FORM 4 Bought$9,9901,000 at $9.99filing
24 Feb 2025filed 24 Feb 2025HLIT HarmonicElectronic Components & EMSSEC FORM 4 Bought$20K2,000 at $10.19filing
24 Feb 2025filed 24 Feb 2025HLIT HarmonicElectronic Components & EMSSEC FORM 4 Bought$10K1,000 at $10.08filing
20 Feb 2025filed 24 Feb 2025HLIT Harmonicoption or derivative · Electronic Components & EMSSEC FORM 4 Code A—16,143 at $0.00filing
15 Feb 2025filed 19 Feb 2025HLIT Harmonicoption or derivative · Electronic Components & EMSSEC FORM 4 Code M—5,840 at $0.00filing
15 Feb 2025filed 19 Feb 2025HLIT HarmonicElectronic Components & EMSSEC FORM 4 Code M—5,840 at $0.00filing
21 Aug 2024filed 23 Aug 2024HLIT Harmonicoption or derivative · Electronic Components & EMSSEC FORM 4 Code A—5,840 at $0.00filing
17 Feb 2023filed 21 Feb 2023HLIT Harmonicoption or derivative · Electronic Components & EMSSEC FORM 4 Code A—10,446 at $0.00filing
15 Feb 2023filed 17 Feb 2023HLIT Harmonicoption or derivative · Electronic Components & EMSSEC FORM 4 Code M—14,395 at $0.00filing
15 Feb 2023filed 17 Feb 2023HLIT HarmonicElectronic Components & EMSSEC FORM 4 Code M—14,395 at $0.00filing
17 Feb 2022filed 22 Feb 2022HLIT Harmonicoption or derivative · Electronic Components & EMSSEC FORM 4 Code A—14,395 at $0.00filing
15 Feb 2022filed 17 Feb 2022HLIT Harmonicoption or derivative · Electronic Components & EMSSEC FORM 4 Code M—10,123 at $0.00filing

News

No headline names them, or the companies they trade most, lately.

Sectors

Technology6
Not placed1

Buys in green, sells in red, by the company’s sector.

Related people

Christoph GlingenerChief Technology Officer · Chief Technology Officer at ADTRAN Holdings, filing Form 4 there in the last year
Timothy P. SantoSVP of Finance; CFO · SVP of Finance; CFO at ADTRAN Holdings, filing Form 4 there in the last year
Anne DelSantoDirector · Director at ADTRAN Holdings, filing Form 4 there in the last year
James Denson Wilson Jr.Chief Revenue Officer · Chief Revenue Officer at ADTRAN Holdings, filing Form 4 there in the last year
Thomas R. StantonChairman & CEO · Chairman & CEO at ADTRAN Holdings, filing Form 4 there in the last year