Japan Moves to Tighten Activist Investor Disclosure Regime
Synopsis
The government is considering stricter disclosure enforcement as activist investing continues to grow in one of Asia's busiest equity markets.
Japan is planning another wave of corporate governance reforms as the country aims to tighten disclosure requirements for activist investors, following a record surge in shareholder activism at its listed firms.
The ruling Liberal Democratic Party (LDP) has formed a working group that has suggested increased enforcement of investor disclosure rules along with revisions to rules on shareholder proposals under revisions to the Japan Companies Act.
The suggestions are due later this month following discussions with regulators, the industry, and other market players.
Shareholder Rules to Be Examined
One proposed revision involves the scrapping of an existing requirement that shareholders must have at least 300 voting units to propose motions at annual meetings, with shareholders who hold a minimum 1% share of voting rights able to propose actions regardless of the total shares held.
The revision is intended to simplify the eligibility requirements and take into account changes in Japan’s stock market since stock splits and rising share prices have skewed ownership.
The move follows amendments to Japan’s Financial Instruments and Exchange Act (FIEA), which became effective on May 1, 2026 and introduced tighter rules on disclosures by large shareholders, expanding reporting duties for specific investment schemes.
Lawmakers now want to focus on enforcing the FIEA rules and may enhance resources for the Securities and Exchange Surveillance Commission (SESC) to probe any potential breaches of these rules.
Activism Is Growing Japan
These suggestions follow an increase in activism at Japanese listed companies, with the country’s shareholders submitting a record 139 proposals concerning 52 listed firms during the 2026 annual shareholder meeting season, the highest since data was first compiled, according to Mitsubishi UFJ Trust Bank.
Most of these proposals targeted board membership, cash allocations and governance principles.
Recent activist campaigns against firms such as SMC Corp, where Palliser Capital campaigned for governance changes, has already brought corporate activism and disclosures under greater scrutiny.
The drive by the Tokyo Stock Exchange to boost its companies’ capital efficiency has also emboldened investors to push for greater accountability from its listed firms.
The LDP’s working group has also discussed enhancing transparency on any agreements that activists and private equity firms may have on the transfer of shares in the future.
In addition, it has examined if the legal framework governing Japanese companies could more broadly incorporate non-binding shareholder resolutions into company law.
Japan has made steady improvements to its governance framework over the past 10 years, with changes to the Stewardship Code and Corporate Governance Code contributing to increased engagement from investors.
Japan remains one of the most active markets for shareholder engagement in Asia, alongside South Korea and Singapore, according to OECD Asia Capital Markets Report 2026.
Overseas investors, including institutions from the US and Australia, may find that Japan is increasingly moving towards improved implementation and disclosure rather than creating a brand new regime.
Source: Reuters
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Pooja Malik is a business journalist with over six years of experience covering startups, entrepreneurship, and emerging trends. She has previously worked with leading media platforms such as YourStory Media and BW BusinessWorld, where she reported on business, policy, and market developments. Currently, she serves as Editor at The Inspirepreneur Magazine, where she writes and edits stories across business, lifestyle, and travel, with a focus on clarity, accuracy, and reader relevance.
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