UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM 6-K

REPORT OF FOREIGN PRIVATE ISSUER

PURSUANT TO RULE 13a-16 OR 15d-16 UNDER

THE SECURITIES EXCHANGE ACT OF 1934

For the month of October 2025

PEARSON plc

(Exact name of registrant as specified in its charter)

N/A

(Translation of registrant's name into English)

80 Strand

London, England WC2R 0RL

44-20-7010-2000

(Address of principal executive office)

Indicate by check mark whether the Registrant files or will file annual reports

under cover of Form 20-F or Form 40-F:

Form 20-F X Form 40-F

Indicate by check mark whether the Registrant by furnishing the information

contained in this Form is also thereby furnishing the information to the

Commission pursuant to Rule 12g3-2(b) under the Securities Exchange Act of 1934

Yes No X

TR-1: Standard form for notification of major holdings

1. Issuer Details

ISIN

GB0006776081

Issuer Name

PEARSON PLC

UK or Non-UK Issuer

2. Reason for Notification

An acquisition or disposal of voting rights

3. Details of person subject to the notification obligation

Name

Ameriprise Financial, Inc.

City of registered office (if applicable)

Minneapolis

Country of registered office (if applicable)

United States

4. Details of the shareholder

Full name of shareholder(s) if different from the person(s) subject to the notification obligation, above

City of registered office (if applicable)

Country of registered office (if applicable)

5. Date on which the threshold was crossed or reached

16-Oct-2025

6. Date on which Issuer notified

17-Oct-2025

7. Total positions of person(s) subject to the notification obligation

	% of voting rights attached to shares (total of 8.A)	% of voting rights through financial instruments (total of 8.B 1 + 8.B 2)	Total of both in % (8.A + 8.B)	Total number of voting rights held in issuer
Resulting situation on the date on which threshold was crossed or reached	4.993000	0.004000	4.997000	31998509
Position of previous notification (if applicable)	5.114000	0.000000	5.114000

8. Notified details of the resulting situation on the date on which the threshold was crossed or reached

8A. Voting rights attached to shares

Class/Type of shares ISIN code(if possible)	Number of direct voting rights (DTR5.1)	Number of indirect voting rights (DTR5.2.1)	% of direct voting rights (DTR5.1)	% of indirect voting rights (DTR5.2.1)
GB0006776081	220054	31725199	0.034000	4.955000
US7050151056	0	24610	0.000000	0.004000
Sub Total 8.A	31969863		4.993000%

8B1. Financial Instruments according to (DTR5.3.1R.(1) (a))

Type of financial instrument	Expiration date	Exercise/conversion period	Number of voting rights that may be acquired if the instrument is exercised/converted	% of voting rights

Sub Total 8.B1

8B2. Financial Instruments with similar economic effect according to (DTR5.3.1R.(1) (b))

Type of financial instrument	Expiration date	Exercise/conversion period	Physical or cash settlement	Number of voting rights	% of voting rights
Equity Swap	N/A	N/A	Cash	28646	0.004000
Sub Total 8.B2				28646	0.004000%

9. Information in relation to the person subject to the notification obligation

2. Full chain of controlled undertakings through which the voting rights and/or the financial instruments are effectively held starting with the ultimate controlling natural person or legal entities (please add additional rows as necessary)

Ultimate controlling person	Name of controlled undertaking	% of voting rights if it equals or is higher than the notifiable threshold	% of voting rights through financial instruments if it equals or is higher than the notifiable threshold	Total of both if it equals or is higher than the notifiable threshold
Ameriprise Financial, Inc. (Chain One)		0.000000	0.000000	0.000000%
Ameriprise Financial, Inc.	TAM UK International Holdings Limited	0.000000	0.000000	0.000000%
Ameriprise Financial, Inc.	Threadneedle Holdings Limited	0.000000	0.000000	0.000000%
Ameriprise Financial, Inc.	TAM UK Holdings Limited	0.000000	0.000000	0.000000%
Ameriprise Financial, Inc.	Threadneedle Asset Management Holdings Limited	0.000000	0.000000	0.000000%
Ameriprise Financial, Inc.	TC Financing Limited	0.000000	0.000000	0.000000%
Ameriprise Financial, Inc.	Threadneedle Asset Management Limited	0.000000	0.000000	0.000000%
Ameriprise Financial, Inc. (Chain Two)		0.000000	0.000000	0.000000%
Ameriprise Financial, Inc.	Columbia Threadneedle Investments UK International Limited	0.000000	0.000000	0.000000%
Ameriprise Financial, Inc.	Columbia Threadneedle (Europe) Limited	0.000000	0.000000	0.000000%
Ameriprise Financial, Inc.	Columbia Threadneedle AM (Holdings) Plc	0.000000	0.000000	0.000000%
Ameriprise Financial, Inc.	Columbia Threadneedle Group (Holdings) Limited	0.000000	0.000000	0.000000%
Ameriprise Financial, Inc.	Columbia Threadneedle Group (Management) Limited	0.000000	0.000000	0.000000%
Ameriprise Financial, Inc.	Columbia Threadneedle Holdings Limited	0.000000	0.000000	0.000000%
Ameriprise Financial, Inc.	Columbia Threadneedle Management Limited	0.000000	0.000000	0.000000%
Ameriprise Financial, Inc. (Chain Three)		0.000000	0.000000	0.000000%
Ameriprise Financial, Inc.	Columbia Threadneedle Investments UK International Limited	0.000000	0.000000	0.000000%
Ameriprise Financial, Inc.	Columbia Threadneedle (Europe) Limited	0.000000	0.000000	0.000000%
Ameriprise Financial, Inc.	Columbia Threadneedle AM (Holdings) Plc	0.000000	0.000000	0.000000%
Ameriprise Financial, Inc.	Columbia Threadneedle Investment Business Limited	0.000000	0.000000	0.000000%
Ameriprise Financial, Inc. (Chain Four)		0.000000	0.000000	0.000000%
Ameriprise Financial, Inc.	Columbia Management Investment Advisers, LLC	0.000000	0.000000	0.000000%
Ameriprise Financial, Inc. (Chain Five)		0.000000	0.000000	0.000000%
Ameriprise Financial, Inc.	Columbia Threadneedle Investments UK International Limited	0.000000	0.000000	0.000000%
Ameriprise Financial, Inc.	Columbia Threadneedle (Europe) Limited	0.000000	0.000000	0.000000%
Ameriprise Financial, Inc.	Columbia Threadneedle AM (Holdings) Plc	0.000000	0.000000	0.000000%
Ameriprise Financial, Inc.	Columbia Threadneedle Group (Holdings) Limited	0.000000	0.000000	0.000000%
Ameriprise Financial, Inc.	Columbia Threadneedle Netherlands B.V.	0.000000	0.000000	0.000000%
Ameriprise Financial, Inc. (Chain Six)		0.000000	0.000000	0.000000%
Ameriprise Financial, Inc.	AMPF Holding, LLC	0.000000	0.000000	0.000000%
Ameriprise Financial, Inc.	Ameriprise Financial Services, LLC	0.000000	0.000000	0.000000%
Ameriprise Financial, Inc. (Chain Seven)		0.000000	0.000000	0.000000%
Ameriprise Financial, Inc.	Ameriprise Bank, FSB.	0.000000	0.000000	0.000000%

10. In case of proxy voting

Name of the proxy holder

The number and % of voting rights held

The date until which the voting rights will be held

11. Additional Information

Threadneedle Asset Management Limited is wholly owned by TC Financing Limited, which is itself wholly owned by Threadneedle Asset Management Holdings Limited, which is itself wholly owned by TAM UK Holdings Limited, which is itself wholly owned by Threadneedle Holdings Limited, which is itself wholly owned by TAM UK International Holdings Limited, which is itself wholly owned by Ameriprise Financial, Inc.

Columbia Threadneedle Management Limited is wholly owned by Columbia Threadneedle Holdings Limited, which is wholly owned by Columbia Threadneedle Group (Management) Limited, which is wholly owned by Columbia Threadneedle Group (Holdings) Limited, which is wholly owned by Columbia Threadneedle AM (Holdings) Plc, which is wholly owned by Columbia Threadneedle (Europe) Limited, which is wholly owned by Columbia Threadneedle Investments UK International Limited, which is wholly owned by Ameriprise Financial, Inc.

Columbia Threadneedle Netherlands B.V. is wholly owned by Columbia Threadneedle Group (Holdings) Limited, which is wholly owned by Columbia Threadneedle AM (Holdings) Plc, which is wholly owned by Columbia Threadneedle (Europe) Limited, which is wholly owned by Columbia Threadneedle Investments UK International Limited, which is wholly owned by Ameriprise Financial, Inc.

Columbia Management Investment Advisers, LLC is wholly owned by Ameriprise Financial, Inc.

Columbia Threadneedle Investment Business Limited is wholly owned by Columbia Threadneedle AM (Holdings) Plc, which is wholly owned by Columbia Threadneedle (Europe) Limited, which is wholly owned by Columbia Threadneedle Investments UK International Limited, which is wholly owned by Ameriprise Financial, Inc.

Ameriprise Bank, FSB is wholly owned by Ameriprise Financial, Inc.

Ameriprise Financial Services, LLC is wholly owned by AMPF Holding, LLC which is itself wholly owned by Ameriprise Financial, Inc.

12. Date of Completion

17-Oct-2025

13. Place Of Completion

Swindon, UK

SIGNATURE

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned, thereunto duly authorized.

	PEARSON plc

Date: 20 October 2025
	By: /s/ NATALIE WHITE

	------------------------------------
	Natalie White
	Deputy Company Secretary

PEARSON PLC 6-K