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Livermore
Livermore
ZHEN

Harmonic Inc.

HLIT
Exchange
Nasdaq
Industry
Radio & Tv Broadcasting & Communications Equipment
SEC CIK
0000851310

No open-market purchases or sales by Harmonic Inc. insiders were filed in the last 90 days; 259 institutions reported holding it in 13F filings for Q2 2026, worth $1.52B in total; no superinvestor holds it.

Holders of 5% or more of HLIT

Holders whose latest Schedule 13D or 13G filing reports 5% or more of Harmonic Inc., largest stake first. The change is against the holder's previous filing.

Holders of 5% or more of HLIT
HolderLatest formStakeChangeFirst filedLatest filingFiling
Vanguard Portfolio Management LLC13G5.64%6.23M sharesNewApr 29, 20261 filingApr 29, 2026SEC
Vanguard Capital Management LLC13G5.00%5.52M sharesNewApr 30, 20261 filingApr 30, 2026SEC

Stakes are as of each holder's latest filing. Holders whose last filing was in the old format (before December 18, 2024) have no stake on record and are not listed, and after an acquisition or delisting holders usually stop filing.

13D and 13G filings

45 Schedule 13D and 13G filings on Harmonic Inc., newest first, including old-format filings without a stake.

Schedule 13D and 13G filings on HLIT
Filed (ET)FilerFormStakeChangeEvent dateFiling
Apr 30, 202610:32 AM ETVanguard Capital Management LLC13G5.00%5.52M sharesNewMar 31, 2026SEC
Apr 29, 20261:57 PM ETVanguard Portfolio Management LLC13G5.64%6.23M sharesNewMar 31, 2026SEC
Mar 27, 20269:31 AM ETVanguard Group Inc13G/A0.00%0 shares−10.63 ppfrom 10.63%Below 5%Mar 13, 2026SEC
Aug 7, 20253:37 PM ETInvesco Ltd.13G/A3.90%4.44M shares−2.80 ppfrom 6.70%Below 5%Jun 30, 2025SEC
Jun 5, 20252:11 PM ETVanguard Group Inc13G/A10.63%12.0M shares+0.83 ppfrom 9.80%May 30, 2025SEC
Apr 30, 202511:10 AM ETVanguard Group Inc13G/A9.80%11.5M shares–Mar 31, 2025SEC
Feb 7, 20251:32 PM ETInvesco Ltd.13G/A6.70%7.79M shares–Dec 31, 2024SEC
Nov 8, 2024Invesco Ltd.13GOld format–New–SEC
Nov 8, 2024Wellington Management Group LLP13G/AOld format–––SEC
Nov 7, 2024Trigran Investments, Inc.13G/AOld format–––SEC
Jul 12, 2024Scopia Capital Management LP13D/AOld format–––SEC
Apr 26, 2024Scopia Capital Management LP13DOld format–––SEC
Feb 13, 2024Vanguard Group Inc13G/AOld format–––SEC
Feb 9, 2024Trigran Investments, Inc.13G/AOld format–––SEC
Feb 9, 2024Wellington Management Group LLP13G/AOld format–––SEC
Jan 22, 20243:52 PM ETBlackRock Inc.13G/AOld format–––SEC
Jan 22, 2024Scopia Capital Management LP13D/AOld format–––SEC
Sep 21, 2023Scopia Capital Management LP13DOld format–––SEC
Apr 12, 2023Scopia Capital Management LP13D/AOld format–––SEC
Feb 14, 2023T. Rowe Price Investment Management, Inc.13G/AOld format–––SEC
Feb 10, 2023Trigran Investments, Inc.13GOld format–New–SEC
Feb 9, 2023Vanguard Group Inc13G/AOld format–––SEC
Feb 6, 2023Wellington Management Group LLP13GOld format–New–SEC
Jan 26, 20238:43 AM ETBlackRock Inc.13G/AOld format–––SEC
Jan 20, 20233:00 PM ETBlackRock Inc.13G/AOld format–––SEC
Oct 19, 2022Scopia Capital Management LP13D/AOld format–––SEC
Oct 11, 2022T. Rowe Price Investment Management, Inc.13G/AOld format–––SEC
Sep 2, 2022Scopia Capital Management LP13D/AOld format–––SEC
Aug 10, 2022T. Rowe Price Investment Management, Inc.13GOld format–New–SEC
Aug 10, 2022Price T Rowe Associates Inc13G/AOld format–––SEC
Aug 2, 2022Scopia Capital Management LP13D/AOld format–––SEC
Mar 29, 2022Scopia Capital Management LP13D/AOld format–––SEC
Feb 14, 2022Price T Rowe Associates Inc13G/AOld format–––SEC
Feb 10, 2022Vanguard Group Inc13G/AOld format–––SEC
Feb 8, 2022Dimensional Fund Advisors LP13G/AOld format–––SEC
Jan 27, 202211:00 AM ETBlackRock Inc.13G/AOld format–––SEC
Jan 25, 20223:03 PM ETBlackRock Inc.13G/AOld format–––SEC
Aug 5, 2021Scopia Capital Management LP13D/AOld format–––SEC
Apr 12, 2021Scopia Capital Management LP13D/AOld format–––SEC
Mar 8, 2021Scopia Capital Management LP13DOld format–––SEC
Feb 16, 2021Scopia Capital Management LP13GOld format–New–SEC
Feb 16, 2021Price T Rowe Associates Inc13G/AOld format–––SEC
Feb 12, 2021Dimensional Fund Advisors LP13G/AOld format–––SEC
Feb 10, 2021Vanguard Group Inc13G/AOld format–––SEC
Jan 25, 20214:50 PM ETBlackRock Inc.13GOld format–New–SEC

Form 144: proposed insider sales

11 notices from officers, directors and other affiliates planning to sell Harmonic Inc. shares, newest first.

Form 144 notices for HLIT
Filed (ET)SellerShares to sellMarket valuePlanned saleBrokerFiling
Aug 19, 20245:49 PM ETHarshman PatrickOfficer26.2K$359.7KAug 19, 2024MORGAN STANLEY SMITH BARNEY LLC, EXECUTIVE SERVICESSEC
Jul 31, 20246:34 PM ETGraham IanOfficer60.1K$868.4KJul 31, 2024Morgan Stanley Smith Barney LLC Executive ServicesSEC
Jul 31, 20246:33 PM ETHarshman PatrickOfficer200.0K$2.83MJul 31, 2024Morgan Stanley Smith Barney LLC Executive ServicesSEC
Jul 31, 20246:19 PM ETHaltmayer NevenOfficer40.0K$576.5KJul 31, 2024MORGAN STANLEY SMITH BARNEY LLC EXECUTIVE SERVICESSEC
Jun 13, 20245:54 PM ETHarshman PatrickOfficer20.0K$220.0KJun 13, 2024Morgan Stanley Smith Barney LLC Executive ServicesSEC
May 2, 20246:36 PM ETGraham IanOfficer52.7K$505.2KMay 2, 2024MORGAN STANLEY SMITH BARNEY LLC EXECUTIVE SERVICESSEC
Feb 16, 20245:07 PM ETHaltmayer NevenOfficer14.7K$201.7KFeb 16, 2024MORGAN STANLEY SMITH BARNEY LLC EXECUTIVE SERVICESSEC
Feb 6, 20249:44 AM ETBen-Natan NimrodOfficer100.0K$66.8MFeb 5, 2024Oppenheimer & Co. Inc.SEC
Feb 2, 20245:39 PM ETHaltmayer NevenOfficer10.6K$138.5KFeb 2, 2024MORGAN STANLEY SMITH BARNEY LLC EXECUTIVE SERVICESSEC
Jan 31, 20245:18 PM ETGraham IanOfficer25.9K$301.2KJan 31, 2024Morgan Stanley Smith Barney LLC Executive ServicesSEC
Jan 31, 20244:12 PM ETHaltmayer NevenOfficer24.7K$286.5KJan 31, 2024MORGAN STANLEY SMITH BARNEY LLC, EXECUTIVE SERVICESSEC