PTT PUBLIC COMPANY LIMITED

(registered in the Kingdom of Thailand as a public company with limited liability)

Offer to Purchase for Cash Any and All of the Outstanding Securities Referred to in the Table Below

Title of Security

CUSIP/ISIN

Outstanding Principal Amount

Fixed Spread (bps)

Reference U.S. Treasury Security

Bloomberg Reference Page

Amount Targeted

5.875% Senior Notes due 2035

Rule 144A: 69367CAB1 / US69367CAB19

Regulation S:

Y71548AX2 / USY71548AX22

U.S.$350,000,000

151

2.875% U.S. Treasury Notes due November 15, 2046

PX1

Any-and-All

Modified Dutch Auction Offer to Purchase Up to the Dutch Auction Cap of the Outstanding
Securities Referred to in the Table Below

Acceptable Bid Spread Range⁽¹⁾⁽²⁾

Title of Security

CUSIP/ISIN

Outstanding Principal Amount

Dutch Auction Early Tender Payment⁽¹⁾

Minimum Spread (bps)

Base Spread (bps)

Reference U.S. Treasury Security

Bloomberg Reference Page

Amount Targeted

4.500% Senior Notes due 2042

Rule 144A:

69367C AD7 / US69367CAD74

Regulation S: Y71548 BZ6 / USY71548BZ60

U.S.$600,000,000

U.S.$30

161

175

2.875% U.S. Treasury Notes due November 15, 2046

PX1

Up to U.S.$100,000,000 in principal amount

Notes:

(1) Per U.S.$1,000 principal amount of Dutch Auction Securities accepted for purchase.

(2) Includes the Dutch Auction Early Tender Payment (as defined herein).

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Offering Documents

Offer to Purchase and Notice of Guaranteed Delivery

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