Nippon Life reported a Corebridge Financial share purchase on Form 4

What did Nippon Life report?

The SEC Form 4 identifies NIPPON LIFE INSURANCE CO as a 10% owner and reports an open-market purchase of 361,127 Corebridge Financial (CRBG) shares at $33.57 each. The reported transaction was about $12.1M.

The transaction date was Oct 15, 2026. The filing was submitted on Oct 19, 2026, 4 days later. The filing states that the holding after the purchase was 129,473,924 shares, an increase of about 0.3% over the estimated holding before.

How does the purchase fit the timing?

The purchase came 72 days after Corebridge Financial’s results announcement of Aug 4, 2026, listed as an 8-K Item 2.02. In the 455 days to Oct 19, 2026, OQRO holds 27 open-market purchases by Corebridge Financial insiders, counted once per person and day. Of those, 0 were made within 30 days after a results announcement.

Some companies let insiders trade only in a window that opens after results. A sale can also follow an option exercise, a tax bill or a pre-arranged plan. A Form 4 does not say which of these applies here.

How does it compare with other purchases?

In the 365 days to Oct 19, 2026, OQRO holds 31 other open-market purchases by this person, about $245M in total. All 31 were at Corebridge Financial. The previous open-market purchase by this person on record at OQRO was 0 months earlier.

Across Corebridge Financial, 31 other open-market purchases, about $245M by 1 insider, were filed in the 90 days to Oct 19, 2026. In the 365 days before that, 0 were filed, about $0, an average of 0.0 per 90 days. These figures describe the filings OQRO holds, not every possible transaction.

What other Corebridge filings and records are on file?

Insiders at Corebridge Financial also filed 4 open-market sales, about $492M, in the 90 days to Oct 19, 2026. In Schedule 13D and 13G filings in the 180 days to Oct 19, 2026, Nippon Life Insurance Company disclosed a 28.4% stake in CRBG, filed Oct 6, 2026.

Fund 13F filings recorded in the 90 days to Oct 19, 2026 show 4 new or larger positions and 6 smaller or closed positions in Corebridge Financial. In 13F filings for the quarter ended Jun 30, 2026, the largest positions that grew were Pzena Investment Management LLC, increased to 6,743,933 shares, and Hotchkis & Wiley Capital Management LLC, increased to 2,564,310 shares. The largest positions that shrank were Tredje AP-fonden and Avanza Fonder AB, both sold out. A 13F is a quarter-end snapshot with no trade date.

FINRA short interest for CRBG on the settlement date of Sep 30, 2026 was 14,379,164 shares, up +13.71% on the previous report, or about 2.63 days of average volume. Additional filing and ownership records are listed on Corebridge Financial on OQRO.

What was happening around the transaction date?

CRBG closed at $34.43 on Oct 15, 2026, the last session on or before the trade date. From Sep 15, 2026 to Oct 15, 2026, the close moved from $35.02 to $34.43, a change of −1.7%. From Oct 15, 2026 to Oct 19, 2026, the close moved from $34.43 to $34.41, a change of −0.1%.

Finnhub listed press coverage titled “Corebridge and 4 More Stocks See Action From Activist Investors,” published by Yahoo, Oct 16, 2026. OQRO lists headlines as published by the outlets; OQRO has not checked them and does not summarise the articles.

What this does not tell you?

A Form 4 reports a transaction; it does not say why it was made. Some purchases and sales follow trading windows or pre-arranged plans, and OQRO notes a plan only when a filing footnote says so. The filing does not explain the share-price moves, and other news can move a price.

Comparisons use only the filings OQRO holds. This article describes public filings and is not investment advice.