Japan Post (AFL: AFL) entity reports open-market sale of 31,600 AFLAC shares

Rhea-AI Filing Summary

Japan Post Holdings Co., Ltd., as a 10% owner of AFLAC INC, reported indirect open-market sales of AFLAC common stock. On May 20, 2026, 31,600 shares were sold in two transactions at weighted average prices of $117.54 and $118.28 per share. The shares are held by J&A Alliance Holdings Corporation as trustee of the J&A Alliance Trust, with Japan Post and related parties stating they may be deemed beneficial owners but expressly disclaiming beneficial ownership beyond their pecuniary interest. After the sales, the filing shows indirect holdings of more than 51 million shares, so the disposals represent a small fraction of the reported position.

Insider Trade Summary 10b5-1

Net Seller: 31,600 shares ($3,718,049)

Net Sell 2 txns

Insider Japan Post Holdings Co., Ltd.

Role null

Sold 31,600 shs ($3.72M)

Type	Security	Shares	Price	Value
Sale	Common Stock	26,485	$117.54	$3.11M
Sale	Common Stock	5,115	$118.28	$605K

Holdings After Transaction: Common Stock — 51,398,160 shares (Indirect, See footnote)

Footnotes (1)

1. The price reported represents the weighted average price of shares of Common Stock of Aflac Inc. (the "Issuer") sold in multiple transactions at prices ranging from $117.15 to $118.15 per share. The reporting person will provide to the Issuer, or the Securities and Exchange Commission staff, upon request, information regarding the number of shares sold at each price within the range. The reported securities are held directly by J&A Alliance Holdings Corporation ("J&A Holdings"), in its capacity as the trustee of the J&A Alliance Trust (the "Trust"). General Incorporated Association J&A Alliance ("General Incorporated"), Kenji Sano and Tetsuya Numaguchi each may be deemed to beneficially own the securities held by J&A Holdings (in its capacity as trustee of the Trust) because (i) General Incorporated owns J&A Holdings and (ii) Kenji Sano and Tetsuya Numaguchi each own 50% of the equity interests in General Incorporated. Japan Post Holdings Co., Ltd. ("Japan Post") may be deemed to beneficially own the shares of common stock owned directly by J&A Holdings, in its capacity as the trustee of the Trust, due to its role as the sole settlor and beneficiary of the Trust. Each of General Incorporated, Kenji Sano, Tetsuya Numaguchi and Japan Post expressly disclaim beneficial ownership of the reported securities except to the extent of its pecuniary interest therein. The price reported represents the weighted average price of shares of Common Stock of the Issuer sold in multiple transactions at prices ranging from $118.16 to $118.615 per share. The reporting person will provide to the Issuer, or the Securities and Exchange Commission staff, upon request, information regarding the number of shares sold at each price within the range.

Key Figures

Total shares sold: 31,600 shares First trade size: 5,115 shares Second trade size: 26,485 shares +5 more

8 metrics

Total shares sold 31,600 shares Aggregate open-market sales on May 20, 2026

First trade size 5,115 shares Open-market sale at weighted average $118.28

Second trade size 26,485 shares Open-market sale at weighted average $117.54

Weighted average price (first sale) $118.28 per share Common stock sale on May 20, 2026

Weighted average price (second sale) $117.54 per share Common stock sale on May 20, 2026

Indirect holdings after one reported sale 51,393,045 shares Total common shares shown following a transaction

Indirect holdings after another reported sale 51,398,160 shares Total common shares shown following a transaction

Net share change -31,600 shares Net-sell direction in transaction summary

Key Terms

open-market sale, weighted average price, beneficially own, trustee, +1 more

5 terms

open-market sale financial

"transaction_action: open-market sale"

An open-market sale is when a shareholder sells existing shares directly on a public exchange to any willing buyer, rather than through a private deal. Think of it like putting goods on a busy market stall where price is set by supply and demand; for investors it matters because such sales increase available supply, can put short-term downward pressure on the stock price, and signal changes in liquidity or investor confidence.

weighted average price financial

"The price reported represents the weighted average price of shares"

Weighted average price is the average price of a security where each trade or component is counted according to its size, so bigger trades pull the average more than smaller ones. Think of it like calculating the average cost of a grocery haul where items you bought more of have greater influence on the final per-item cost. Investors use it to understand the true average price paid or received, judge execution quality, and compare trading performance against market movement.

beneficially own financial

"each may be deemed to beneficially own the securities held"

Beneficially own means having the economic rights and risks of a security—such as the right to receive dividends, sell the shares, or profit from price changes—whether or not your name appears on the official share register. Think of it like renting a car: you use it and reap the benefits even if the title lists someone else. Investors care because beneficial ownership determines who truly controls value, must be disclosed under securities rules, and can signal potential influence or trading activity that affects a stock’s price.

trustee financial

"held directly by J&A Alliance Holdings Corporation in its capacity as the trustee"

A trustee is a person or institution legally appointed to hold and manage assets or enforce an agreement on behalf of other people (beneficiaries). Think of a trustee as a neutral referee or custodian who must act in the beneficiaries’ best interests, follow the trust or contract rules, and handle distributions, recordkeeping and enforcement. Investors care because a trustworthy trustee protects their rights, ensures promised payments or remedies are delivered, and can influence recoveries if things go wrong.

pecuniary interest financial

"expressly disclaim beneficial ownership of the reported securities except to the extent of its pecuniary interest"

Form 4 Insider Transactions: What Each Field Means →

SEC Form 4

FORM 4

UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940

OMB APPROVAL

OMB Number:			3235-0287
Estimated average burden
hours per response:			0.5

Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

X

Check this box to indicate that a transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). See Instruction 10.

1. Name and Address of Reporting Person^*

Japan Post Holdings Co., Ltd.

(Last) (First) (Middle)

2-3-1, OTEMACHI, CHIYODA-KU

(Street)

TOKYO 100-8791

(City) (State) (Zip)

JAPAN

(Country)

2. Issuer Name and Ticker or Trading Symbol
AFLAC INC [ AFL ]

5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)

	Director	X	10% Owner
	Officer (give title below)		Other (specify below)

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
05/20/2026

6. Individual or Joint/Group Filing (Check Applicable Line)

X	Form filed by One Reporting Person
	Form filed by More than One Reporting Person

4. If Amendment, Date of Original Filed (Month/Day/Year)

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	3. Transaction Code (Instr. 8)		4. Securities Acquired (A) or Disposed Of (D) (Instr. 3, 4 and 5)			5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4)	6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
			Code	V	Amount	(A) or (D)	Price
Common Stock	05/20/2026		S		26,485	D	$117.54(1)	51,398,160	I	See footnote(2)
Common Stock	05/20/2026		S		5,115	D	$118.28(3)	51,393,045	I	See footnote(2)

Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 3)	2. Conversion or Exercise Price of Derivative Security	3. Transaction Date (Month/Day/Year)	3A. Deemed Execution Date, if any (Month/Day/Year)	4. Transaction Code (Instr. 8)		5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5)		6. Date Exercisable and Expiration Date (Month/Day/Year)		7. Title and Amount of Securities Underlying Derivative Security (Instr. 3 and 4)		8. Price of Derivative Security (Instr. 5)	9. Number of derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4)	10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)
				Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares

Explanation of Responses:

1. The price reported represents the weighted average price of shares of Common Stock of Aflac Inc. (the "Issuer") sold in multiple transactions at prices ranging from $117.15 to $118.15 per share. The reporting person will provide to the Issuer, or the Securities and Exchange Commission staff, upon request, information regarding the number of shares sold at each price within the range.

2. The reported securities are held directly by J&A Alliance Holdings Corporation ("J&A Holdings"), in its capacity as the trustee of the J&A Alliance Trust (the "Trust"). General Incorporated Association J&A Alliance ("General Incorporated"), Kenji Sano and Tetsuya Numaguchi each may be deemed to beneficially own the securities held by J&A Holdings (in its capacity as trustee of the Trust) because (i) General Incorporated owns J&A Holdings and (ii) Kenji Sano and Tetsuya Numaguchi each own 50% of the equity interests in General Incorporated. Japan Post Holdings Co., Ltd. ("Japan Post") may be deemed to beneficially own the shares of common stock owned directly by J&A Holdings, in its capacity as the trustee of the Trust, due to its role as the sole settlor and beneficiary of the Trust. Each of General Incorporated, Kenji Sano, Tetsuya Numaguchi and Japan Post expressly disclaim beneficial ownership of the reported securities except to the extent of its pecuniary interest therein.

3. The price reported represents the weighted average price of shares of Common Stock of the Issuer sold in multiple transactions at prices ranging from $118.16 to $118.615 per share. The reporting person will provide to the Issuer, or the Securities and Exchange Commission staff, upon request, information regarding the number of shares sold at each price within the range.

	/s/ Yuki Takemura, Senior General Manager, as attorney-in-fact for Nobuyasu Kato	05/22/2026
	** Signature of Reporting Person	Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 4 (b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.
* Form 4: SEC 1474 (03-26)

FAQ

What insider transaction did Japan Post report in AFLAC (AFL) shares?

Japan Post, as a 10% owner of AFLAC, reported indirect open-market sales totaling 31,600 common shares. The trades occurred through J&A Alliance Holdings Corporation as trustee of the J&A Alliance Trust on May 20, 2026, and were disclosed on a Form 4 filing.

At what prices were the AFLAC (AFL) shares sold in this Form 4?

The filing reports weighted average sale prices of $117.54 and $118.28 per share. Footnotes explain these averages reflect multiple trades within ranges from $117.15 to $118.615, and detailed trade-level pricing is available to the issuer or SEC staff on request.

How many AFLAC (AFL) shares did the insider hold after the reported sales?

After the May 20, 2026 transactions, the Form 4 rows show indirect holdings slightly above 51 million AFLAC common shares. These figures indicate that the 31,600 shares sold represent only a small portion of the overall reported position in the company.

Who actually holds the AFLAC (AFL) shares related to Japan Post’s Form 4?

The reported AFLAC shares are held directly by J&A Alliance Holdings Corporation as trustee of the J&A Alliance Trust. Japan Post and related parties may be deemed beneficial owners through this structure but expressly disclaim beneficial ownership except to the extent of their pecuniary interest.

Were the AFLAC (AFL) sales direct or indirect holdings for Japan Post?

The transactions involve indirect holdings, as indicated by the “I” ownership code and trust structure. J&A Alliance Holdings Corporation, acting as trustee of the J&A Alliance Trust, holds the shares, and Japan Post’s interest arises through its role as sole settlor and beneficiary of the trust.