Formosa Petrochemical Announces Consolidated Revenue for June 2026

1. Date of Event: July 9, 2026 (R.O.C. Year 115)

2. Company Name: Formosa Petrochemical Corporation

3. Relationship to Company (Please enter '本公司' or 'Subsidiary'):本公司 (Our Company)

4. Cross-shareholding Ratio: Not applicable

5. Reason for Announcement: Announcement of the Company's Consolidated Revenue for June 2026

6. Countermeasures: None

7. Other Matters to be Disclosed (If the entity involved in the event or resolution is a publicly issued company or above, this material information also qualifies as a matter under Article 7, Paragraph 9 of the Enforcement Rules of the Securities and Exchange Act that significantly affects shareholders' rights or securities prices):

I. Comparison of Consolidated Revenue for June 2026 vs. May 2026:

The consolidated revenue for June 2026 was NT$63.68334 billion, an increase of NT$5.90612 billion (10.2%) compared to NT$57.77722 billion in May 2026.

Breakdown: Sales price variance decreased by NT$11.50 billion, while sales volume variance increased by NT$17.41 billion.

(1) Refining Business Revenue increased by 18.0% month-on-month.

Sales Volume:

Crude oil refining volume in June 2026 was 14,017 thousand barrels (467 thousand barrels/day, 30 days), up by 2,500 thousand barrels from 11,517 thousand barrels (372 thousand barrels/day, 31 days) in May. This increase was primarily due to the completion of scheduled maintenance at refining units in May and the continuous delivery of crude oil. Total product sales volume reached 14,143 thousand barrels, up 3,482 thousand barrels from 10,661 thousand barrels in May.

Sales Price:

Following initial consensus in U.S.-Iran negotiations, international oil prices gradually declined. The average Dubai crude oil price in June 2026 was USD 79.5/barrel, down USD 23.6/barrel from the previous month, resulting in an average product selling price decrease of USD 23.5/barrel.

(2) Olefin Business Revenue decreased by 32.2% month-on-month.

Sales Volume:

Ethylene production in June 2026 was 90,600 metric tons (capacity utilization rate 34%, 30 days), up slightly by 100 metric tons from 90,500 metric tons (33%, 31 days) in May. Total product sales volume was 184,800 metric tons, down 41,800 metric tons from 226,600 metric tons in May.

Sales Price:

The average MOPJ naphtha price in June 2026 was USD 725/ton, down USD 263/ton from the previous month. The average price of the four major products decreased by USD 272/ton (ethylene -309, propylene -239, butadiene -274, pygas -237 USD/ton).

(3) Utility Business Revenue decreased by 4.2% month-on-month, mainly due to scheduled maintenance and fewer operating days, resulting in lower electricity sales.

II. Comparison of Consolidated Revenue for June 2026 vs. June 2025:

The consolidated revenue for June 2026 was NT$63.68334 billion, an increase of NT$9.9255 billion (18.5%) compared to NT$53.75784 billion in June 2025.

Breakdown: Sales price variance increased by NT$20.38 billion, while sales volume variance decreased by NT$10.46 billion.

(1) Refining Business Revenue increased by 34.3% year-on-year.

Sales Volume:

Crude oil refining volume in June 2026 was 14,017 thousand barrels (467 thousand barrels/day), down 522 thousand barrels from 14,539 thousand barrels (485 thousand barrels/day) in the same period last year. Total product sales volume was 14,143 thousand barrels, down 2,101 thousand barrels from 16,244 thousand barrels last year, primarily due to shipment scheduling—last year included deferred export deliveries.

Sales Price:

The average Dubai crude oil price in June 2026 was USD 10.2/barrel higher than the same period last year. Combined with a significant expansion in export product price spreads over crude oil, the average product selling price increased by USD 37.0/barrel year-on-year.

(2) Olefin Business Revenue decreased by 38.2% year-on-year.

Sales Volume:

Ethylene production in June 2026 was 90,600 metric tons (34% utilization), down 67,200 metric tons from 157,800 metric tons (60%) in June 2025. Total product sales volume was 184,800 metric tons, down 223,800 metric tons year-on-year.

Sales Price:

The average MOPJ naphtha price in June 2026 was USD 137/ton higher than the same period last year. The average price of the four major products increased by USD 222/ton year-on-year (ethylene +211, propylene +270, butadiene +336, pygas +195 USD/ton).

(3) Utility Business Revenue decreased by 11.5% year-on-year, primarily due to lower electricity and steam sales volumes compared to the same period last year.