TOKYO - Japan's plan to give authorities the power to order foreign investors to retroactively divest acquisitions is aimed at sheltering major firms and supply chains, though it is unlikely to curtail increased M&A interest, experts say.

Japan on ‍Wednesday proposed amendments to its foreign investment ‍screening law that would grant authorities an option to force foreigners to sell investments deemed to pose risks to national or economic security.

The proposals come ​as Japanese Prime Minister Sanae Takaichi's administration steps up efforts to mitigate risks from an inflow of foreign money to Japan's economic security and control over key supply chains.

At present, overseas investors ⁠seeking to buy stakes in Japanese companies outside of sectors that are critical to economic or national security are not required to notify the government in advance, leaving officials with no ability ⁠to intervene.

The ‌new powers are aimed at investors who are categorised as high-risk, including those that might cooperate with foreign powers to gather intelligence. Chinese companies have been required to cooperate with the country's intelligence agencies since a law was passed in 2017.

In Japan, the period during which transactions can be reviewed retroactively ⁠would be around five years.

"Japan would like to keep Chinese companies from buying top-quality Japanese companies and technology," said Nicholas Benes, founder of the Board Director Training Institute of Japan.

The proposed changes, which also include stricter requirements for indirect investments in Japanese firms via foreign parents, are intended to put Japan on par with allies like the U.S., Britain and Germany in terms of security oversight, a government source said.

Those countries have the power to retroactively order stake divestitures, according to documents from the Ministry ⁠of Finance.

"In principle, it doesn't stick out like a sore ​thumb as it's similar to what other countries are doing," said Benes, an expert in corporate governance.

FIRST MAJOR OVERHAUL SINCE 2019

Japan is making the first major overhaul to its foreign investment screening law since 2019, ‍when the threshold for review of stock purchases by foreign entities was lowered to 1% from 10%.

The 1% threshold means the Japanese government has roughly 10 times more pre-transaction filings to deal with than other major countries, though the ​revisions would narrow the range of businesses that are subject to review.

Yohsuke Higashi, an M&A lawyer and partner at Mori Hamada & Matsumoto, said the scope of prior filing requirements should be substantially narrowed to strike a balance, since post-closing intervention will be allowed and requirements for indirect investments will be introduced.

He also said Japan should put more resources toward enforcing risk-mitigation conditions attached to approvals and catching risky transactions through post-closing interventions.

"The review team is overloaded, so I can understand they need to streamline and prioritise more important cases," said another lawyer working on inbound investment deals, who declined to be named as they were not permitted to speak publicly.

The alterations to the foreign investment rules follow corporate governance reforms led by the government that drove an increase in interest from overseas investors in Japan and helped push the stock market to record highs.

Inbound M&A activity jumped 45% from a year earlier to $33 billion last year, according to LSEG data.

Experts said the proposed changes are not likely to have a major impact on inbound investment.

"With the exception of Chinese ⁠investors, who would likely fall under the high-risk category and could be subject to post-closing intervention, the changes would ‌not generally discourage M&A targeting Japanese companies and other forms of direct inbound investments into Japan," Higashi said.

Yuki Kanemoto, a senior researcher at the Daiwa Institute of Research, also predicted little impact.

"Some may say that Japan is currently more permissive than Europe or the United States because the number of formally rejected cases is relatively small," he said.

"But I suspect ‌there are in reality ⁠quite a few cases that amounted to an effective rejection behind the scenes."

Japan has rejected only one deal under its foreign investment screening law - the attempted purchase of Electric Power Development by ⁠the London-based Children's Investment Fund in 2008.

(Reporting by Makiko Yamazaki; Additional reporting by Anton Bridge; Editing by Sam Nussey and Thomas Derpinghaus)