Japan's Financial Services Agency has ordered an individual identified only as "A," a resident of Aichi Prefecture, to pay a ¥6.56mn surcharge to the national treasury for insider trading ahead of a 2024 tender offer for GDS, a used-vehicle and motorcycle dealer then listed on the Tokyo Stock Exchange's Growth market. Payment is due November 17, 2026, more than two and a half years after the trades themselves.
According to the decision, dated September 16, 2026, and made public the next day by the FSA, A learned no later than February 1, 2024, that the company preparing a tender offer for GDS shares had internally resolved to proceed. The tip came from B, a former GDS officer, who had learned of the plan through his own dealings with the bidding company.
On February 26 and 27, 2024, days before the tender offer became public on March 1, A bought a combined 25,700 GDS shares for ¥19.1mn. The trades ran through two brokerages, identified in the filing only as C Securities and D Securities, and were booked under an acquaintance's name even though A traded for his own account.
| Price per share | Shares bought |
|---|---|
| ¥695 | 12,000 |
| ¥740 | 2,200 |
| ¥795 | 11,500 |
| Total | 25,700 |
The surcharge follows the formula in Article 175 of the Financial Instruments and Exchange Act: the highest price GDS shares reached in the two weeks after the March 1 announcement, ¥999, multiplied by the 25,700 shares A bought, minus what A actually paid for them. Rounded down to the nearest ¥10,000 as the law requires, the result is the ¥6.56mn order.
A did not contest the case. Before the first hearing in the administrative proceeding opened, A filed a response admitting both the underlying facts and the surcharge amount, a step the FSA's judges cited in reaching their decision without a contested hearing. GDS was delisted from the Growth market on August 23, 2024, according to the FSA's decision summary.
The case shows how far a leak can travel before regulators catch it. Here the chain ran from the bidding company's internal decision, through a former target-company officer, to an outside acquaintance's brokerage account, the kind of relayed tip Japan's insider-trading surcharge regime is built to catch even when the trader sits several steps removed from the deal itself.