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Livermore
Livermore
ZHEN

Ridgetech Inc.

RDGT
Exchange
Nasdaq
Industry
Retail-Drug Stores and Proprietary Stores
SEC CIK
0001856084

In the last 90 days, Ridgetech Inc. insiders filed 1 open-market purchase and 0 sales; 5 institutions reported holding it in 13F filings for Q2 2026, worth $190.3K in total; HHLR Advisors (Hillhouse) is the only superinvestor holding it.

Holders of 5% or more of RDGT

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

Holders of 5% or more of RDGT
HolderLatest formStakeChangeFirst filedLatest filingFiling
Kong Lingtao13D/A12.20%2.23M shares−25.80 ppfrom 38.00%Mar 6, 20252 filingsDec 1, 2025SEC

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

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

Schedule 13D and 13G filings on RDGT
Filed (ET)FilerFormStakeChangeEvent dateFiling
Jul 20, 20265:16 PM ETKong Lingtao13D/A3.20%114.8K shares–Below 5%Jul 16, 2026SEC
Dec 1, 20254:30 PM ETKong Lingtao13D/A12.20%2.23M shares−25.80 ppfrom 38.00%Nov 24, 2025SEC
Mar 6, 20254:48 PM ETKong Lingtao13D38.00%2.23M sharesNewFeb 28, 2025SEC
Mar 4, 20254:50 PM ETLiu Lei13D/A0.00%0 shares–Below 5%Feb 28, 2025SEC
Nov 14, 2024Liu Lei13D/AOld format–––SEC
Sep 3, 2024Liu Lei13D/AOld format–––SEC
Apr 16, 2024Liu Lei13D/AOld format–––SEC
Feb 14, 2023Hillhouse Investment Management, Ltd.13D/AOld format–––SEC

Form 144: proposed insider sales

Notices from officers, directors and other affiliates planning to sell Ridgetech Inc. shares.

No Form 144 notices for Ridgetech Inc. are on file.