Japan Post (NYSE: AFL) affiliate trims AFLAC stake with 12,800-share sale

Rhea-AI Filing Summary

Japan Post Holdings Co., Ltd., a more-than-10% owner of AFLAC Inc, reported indirect open-market sales of 12,800 shares of AFLAC common stock on June 9, 2026. The sales were executed through J&A Alliance Holdings Corporation acting as trustee of the J&A Alliance Trust.

The shares were sold in multiple trades at weighted average prices ranging from about $114.46 to $116.54 per share, according to the footnotes. After these transactions, entities associated with Japan Post continue to hold roughly 51.1 million AFLAC shares indirectly, so the sale represents a small portion of the reported position.

Insider Trade Summary 10b5-1

Net Seller: 12,800 shares ($1,477,548)

Net Sell 3 txns

Insider Japan Post Holdings Co., Ltd.

Role null

Sold 12,800 shs ($1.48M)

Type	Security	Shares	Price	Value
Sale	Common Stock	7,238	$115.21	$834K
Sale	Common Stock	5,463	$115.71	$632K
Sale	Common Stock	99	$116.51	$12K

Holdings After Transaction: Common Stock — 51,148,297 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 $114.455 to $115.45 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 $115.46 to $116.41 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 price reported represents the weighted average price of shares of Common Stock of the Issuer sold in multiple transactions at prices ranging from $116.47 to $116.54 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

Shares sold: 12,800 shares Price range block 1: $114.455–$115.45/share Price range block 2: $115.46–$116.41/share +3 more

6 metrics

Shares sold 12,800 shares Total AFLAC common stock sold on June 9, 2026

Price range block 1 $114.455–$115.45/share Weighted average sale price range for one set of trades

Price range block 2 $115.46–$116.41/share Weighted average sale price range for second set of trades

Price range block 3 $116.47–$116.54/share Weighted average sale price range for third set of trades

Post-transaction holdings ≈51.1 million shares Indirect AFLAC shares reported as held after the sales

Single trade size example 7,238 shares One reported open-market sale at $115.21 per share

Key Terms

weighted average price, beneficially own, pecuniary interest, trustee, +1 more

5 terms

weighted average price financial

"The price reported represents the weighted average price of shares of Common Stock..."

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 by J&A Holdings..."

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.

pecuniary interest financial

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

trustee financial

"held directly by J&A Alliance Holdings Corporation ("J&A Holdings"), in its capacity as the trustee of the J&A Alliance Trust..."

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.

settlor and beneficiary financial

"Japan Post... may be deemed to beneficially own... due to its role as the sole settlor and beneficiary of the Trust."

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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)
06/09/2026

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	06/09/2026		S		7,238	D	$115.21(1)	51,148,297	I	See footnote(2)
Common Stock	06/09/2026		S		5,463	D	$115.71(3)	51,142,834	I	See footnote(2)
Common Stock	06/09/2026		S		99	D	$116.51(4)	51,142,735	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 $114.455 to $115.45 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 $115.46 to $116.41 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.

4. The price reported represents the weighted average price of shares of Common Stock of the Issuer sold in multiple transactions at prices ranging from $116.47 to $116.54 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	06/11/2026
	** 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 reported an indirect open-market sale of 12,800 AFLAC common shares. The trades occurred through J&A Alliance Holdings Corporation as trustee of the J&A Alliance Trust, reflecting a relatively small reduction versus more than 51 million shares reported as indirectly held.

On what date did the AFLAC (AFL) insider share sales take place?

The insider share sales took place on June 9, 2026. All three reported transactions involved AFLAC common stock and were executed as open-market sales on that date, according to the Form 4 transaction details and accompanying footnotes.

How many AFLAC (AFL) shares were sold in total in this Form 4?

The filing shows a total of 12,800 AFLAC common shares sold. This total comes from three separate open-market sale transactions reported for that day, as summarized in the transaction overview included with the Form 4 data.

What prices were received for the AFLAC (AFL) insider share sales?

The reported prices are weighted averages from multiple trades in price ranges. Footnotes state ranges of $114.455–$115.45, $115.46–$116.41, and $116.47–$116.54 per share, with detailed trade breakdowns available from the reporting person upon request.

How many AFLAC (AFL) shares remain held after the insider sale?

After the reported transactions, the filing shows indirect holdings of about 51.1 million AFLAC shares. These shares are held through J&A Alliance Holdings Corporation as trustee of the J&A Alliance Trust, with several related entities potentially deemed beneficial owners subject to pecuniary interest.

Who actually holds the AFLAC (AFL) shares linked to Japan Post?

The shares are held directly by J&A Alliance Holdings Corporation as trustee of the J&A Alliance Trust. General Incorporated Association J&A Alliance and certain individuals, plus Japan Post as settlor and beneficiary, may be deemed beneficial owners but each disclaims ownership beyond their pecuniary interest.