Nippon Life buys $376m of Corebridge stock to lift stake to about 30.3%

Nippon Life adds $376m of Corebridge stock

The Japanese mutual insurer said the purchase settled on 3 November 2026, US Eastern time. It covered about 10.9 million shares and lifted Nippon Life's ownership to approximately 30.3%. Nippon Life described itself as a strategic investor and said it would keep supporting growth and efforts to raise corporate value at Corebridge and at the combined group. Corebridge is based in Houston. It sells retirement savings and life insurance, while New York-based Equitable Holdings runs retirement, life and asset management businesses.

Why the stake matters for the merger

Nippon Life expects to own approximately 15.3% of the combined Corebridge-Equitable company. That estimate is based on outstanding share counts that Corebridge and Equitable published in their second-quarter 2026 earnings disclosures. The combined business is expected to remain an equity-method affiliate of Nippon Life, the insurer said, so the smaller percentage does not alter the accounting relationship. Under equity-method accounting, an investor generally recognises its proportionate share of an affiliate's earnings rather than consolidating the affiliate's revenue and expenses.

Corebridge and Equitable announced their all-share merger in March 2026. The deal valued the combined group at approximately $22bn, and the merged business is expected to oversee $1.5tn in assets under management and administration.

The $376m outlay is larger than the earlier purchase Nippon Life reported. On 1 October 2026 it bought 272,208 Corebridge shares for $9.0m, according to MarketBeat on 5 October.

Nippon Life's open-market purchases

A Form 4 filed on 26 October 2026 showed that Nippon Life bought 246,440 Corebridge shares on 22 October at a weighted average price of $35.1523. That filing put its beneficial ownership at 130,667,106 shares, including 33,271 shares held by Nissay Asset Management, a wholly owned subsidiary. An earlier Form 4, filed on 22 October, recorded 193,357 shares bought on 20 October at a weighted average of $35.0106 and ownership of 130,203,484 shares. Both purchases ran under a Rule 10b5-1 plan Nippon Life adopted on 7 August 2026.

AIG's exit and the 2024 block

AIG agreed to sell around 25 million Corebridge common shares, its last holding in the insurer, in a transaction scheduled to complete on 7 May. The sale was set to generate roughly $710m in net proceeds for AIG. In 2024, AIG had sold 120 million Corebridge shares to Nippon Life for $3.8bn. Peter Zaffino, AIG's chairman and chief executive, said the May sale "marks the culmination of a five-year separation and a significant milestone in the successful execution of our strategy to exit the life and retirement business".

Nippon Life has added to the 2024 block through open-market purchases filed with the SEC this autumn.

What happens next

Corebridge and Equitable expect to complete their transaction by the end of December 2026, according to Nippon Life's announcement. After completion, finance leadership at the enlarged group is expected to move to Robin Raju, currently CFO at Equitable. Corebridge named Christopher Filiaggi, its current chief accounting officer, as interim CFO with effect from 24 April, and he is expected to remain in the role until the merger is finalised.