Kissei discloses cyberattack: what it means for Kissei stock

Published on 10/14/2026 at 00:22 | Editorial responsibility: Rafael Müller, Editor-in-Chief AD HOC NEWS

Kissei disclosed exposure October 9, 2026. For Kissei stock, fiscal 2027 first-quarter net income reached JPY 4,723 million, up from JPY 2,765 million.

Cybersecurity disclosure and quarterly earnings

Kissei Shoji's October 9, 2026 disclosure concerned potential exposure of sensitive information.
Fiscal 2027 first-quarter revenue was JPY 23,389 million.
Kissei Pharmaceutical stock was last at JPY 3,795.00 in Tokyo on October 13, 2026.
Kissei's market capitalization was JPY 157.3 billion on October 13, 2026.

Kissei, JP3240600001, Illustration mit AI erstellt.

Kissei (ISIN JP3240600001) disclosed a cybersecurity incident at group company Kissei Shoji on October 9, 2026, involving the potential exposure of personal and other sensitive information. As Jiho reported on October 13, 2026, the trading company said the incident could affect information held by the group company.

What the disclosure means

The incident involves Kissei Shoji, which operates businesses including noodle production and sales, rather than a reported intrusion into Kissei Pharmaceutical's core systems. The disclosure said the potential exposure includes sensitive information, while the scope of the incident remains part of the investigation, according to Jiho.

For investors, the key distinction is operational: the report described Kissei Shoji as the affected group company and did not report a business interruption at Kissei Pharmaceutical. That leaves the disclosure as an information-security risk with a defined group-company connection rather than a quantified earnings impact.

Quarterly earnings add a counterweight

Kissei Pharmaceutical's fiscal 2027 first-quarter revenue was JPY 23,389 million, compared with JPY 24,773 million in the prior quarter, a decline of 5.58 percent. Investing.com reported the period's net income at JPY 4,723 million, up 70.87 percent from JPY 2,765 million in the prior quarter.

The earnings figures provide a concrete operating reference alongside the security disclosure. The latest quarter also produced basic earnings per share of JPY 113.94, according to the standardized financial statements for the period ended June 30, 2026.

Tokyo price and yearly range

Kissei Pharmaceutical was last at JPY 3,795.00 on Tokyo on October 13, 2026 at 3:30 p.m. JST. The price stood 24.70 percent below the 52-week high of JPY 5,040.00 and 8.43 percent above the 52-week low of JPY 3,500.00.

Market capitalization was JPY 157.3 billion on October 13, 2026, while trading volume was 58,900 shares. The further course of trading is shown by the continuously updated real-time quote of Kissei stock.