Separate financial statements Q4.2025

CÔNG TY CӘ PH⑬N SӦI THӂ KӸ

CONG TY CA PHA SQI THE KY

conro r+ow

Digitally signed by CÔNG TY CӘ PH⑬N SӦI THӂ KӸ

DN: cn=CÔNG TY CӘ PH⑬N SӦI THӂ KӸ c=VN o=CÔNG TY CӘ PH⑬N SӦI THӂ KӸ

Reason: I am the author of this document Location:

Date: 2026-01-26 16:30+07:00

CONG HOA HQI CHU NCiHfA VI {ET NAM

DQc lap - Tq do - Hanh phfic

Sk/No: -26/CV-CTTK

TP.HCWffoc6imiiifi city, ngay/date & thanQmonrA 01 nanv'yeor 2026

CCtNG BO THONG TIN oFo rtoNa sczosvnr TREN C NG THONG TIN DIEN TUCUA UY BAN ONre art rx szcURITIES CHUG KHO NHA NC€JC VA SP GIAO DICH COMMISSION AND HOCHIMINH STOCK

CH ING KHO TP.HCM EXCHANGE'S PORTAL

Kinh giri/Z'o: - Uy ban Ch rng khoân Nhâ nude

- So Giao dich chñog khodn TP.HCM

Hochiminh Stock Exchange

- Ten to chic: Cong ty co phan Spi The Ky

Organization name. C.entury !pnthetic Fitter C.orporation

Mâ chñng khoânlTicker: STK

Dia chl tru sit chinh: Lo B1-1, Khu cfing nghi p Tay Bac Cu Chi, xñ Tân An Hoi, TP.HCM

Headquarter office.' Lot BI-1, North West Cu Chi Industrial Zone, Tan An Hoi Commune, HCMC.

- Di n thoq'ifTel.: (+84.276) 388 7565 Fax: (+84.276) 388 7566

- Ng i thqc hien cong bo thong tin. Dog Tripu Hfia - Chuc vp: Chu tich HDQT

Spokesman: Dang Trieu Hoa - Title.' Chairman of the BOD

Loai thong tin cñng bñ/type of information disclosure:

If dinh k'y/periodic O bat thu6nglirregular O 24h/2# hours O theo yéu cau/on demand

Ngi dung thñng tin cñng bo/Contents ofinformation disclosure.•

1. Bao cao tai chinh riéng vabao cao tar chinh hpp nhat Q4.2025 (bin tiéng viet va ban tiéng anh)

   Separate and consolidatedfinancial statements Q4.2025 (English version and Vietnamese version)

2. Uoiai trinh chenh lych lqi nhuan Q4.2025 so vdi ciing ky

Explancitioii ofProfit diffo•i-o•iio-es Q•I.2025 yc•ar-ovo•r-yc•ar

Thong tin nay da duqc cñng bo trén trang thong tin di n tñ cua céing ty vao ngay /01/2026 tar diiing dan: https://thekY.vn

This information was published on the Company's website onI /01/2026 at the link. https://thekv.vn

Toi cam ket câc thñng tin cong bo trén diy lâdung st thyt va hoan toan chiu trach nhiem trudc phap luat ve n i dung cac thong tin dñ cñng bñ./

We hereby declare to be responsible for the accuracy and completeness of the above information.

Tâi licu dlnh kem/Attachments

- Tni lipid lién quan déii vice CBTT. Documents related to the information disclosure.

DH DUN TO CH'IfC.It' WBEHALF OF THE COMPANY

NGO DAI DUN THEO PHA LU CAT

CHU TJCH HDQT/CZZ4fRMH7Y OF THE BOD -

CO PHAN

4!

Independence - ¥'reedom - Happiness

No: -26/CV-CTTK

Ho Chi Minh City, January 24, 2026.

To:

• State Securities Commission.

» Ho Chi Minh City Stock Exchange (HOSE)

Century Synthetic Fiber Corporation hereby provides an explanation for the fluctuation in after-tax profit for Quarter IV of 2025 compared to Quarter IV of 2024, as presented in the VAS financial statements prepared by the Company on January 24, 2026, as follows:

-I- Pqrent COmnany:

Unit: VND

+ Consolidated:

Unit: VND

0'

SQ

, TH

t g

Reasons:

Due to weak demand, revenue of the Parent Company and consolidated revenue decreased by 12.9% and 2.9%, respectively. Meanwhile, although the gross profit of the Parent Company increased by 16.7% thanks to a higher proportion of recycled yarn, consolidated gross profit decreased by 14% as the Unitex factory began recognizing depreciation expenses from the fourth quarter of 2025 and due to the impact of the elimination of consolidated intercompany transactions.

Profit before tax of the Parent Company increased by VND 13.4 billion, representing a year-on-year increase of'47.3%, mainly attributable to higher gross profit, higher financial income, and lower financial expenses. However, due to higher corporate income tax expenses compared to the same period last year,

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Tnj aés BI-1 KGN Téy Bâc Cu Chi, Huy9n Cd Chi, Tp.HCM, Vldt Nam •Ghi ntt4lnh: Bu'é'ng so 8, KCN Trang Bang, Huyen Trang Béng, Tlnh Tây Ninh, Viet Nam DT: (+84.8) 3790 7565; (*84.66) 389 9537 •Fex: {+84.8) 37a 7566; (+B4 66) 389 9536 •Emsff: century@hem.vnn.vn, csf@century.vrt Wabcltc: wvw theky.vn

c6Hcwc6 nHAH spsTnZ x?

profit after tax of the Parent Company increased by only VND 8.9 billion, equivalent to a year-on-year increase of 37.4%.

Meanwhile, consolidated profit before tax increased by VND 36.2 billion, equivalent to a year-on-year increase of 212.8%, and consolidated profit after tax increased by VND 31.4 billion, corresponding to a year-on-year increase of 147.8%, primarily because Unitex no longer had to recognize foreign exchange losses starting from the fourth quarter of2024.

Century Syittbeti Flbe C

CO•NG•TY C'

We sincerely thank you and extend our best regards.

Recipients:

• SSC, HOSE;

  * sq'

• Company Website; i

  
  
  

• Office archives.

4 COPHAN

UHOA

ERSON

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Trtj s6c BJ-1 KCN TAy Bâc Cu Chi, Huy4n Cd Chi, Tp.HCM, VII Nam Chlnhénh: Du'ong st 8, KCN Trang Bang, Huy n Trang Bang, Tlnh Tây Ninh, Viét Nam DT: (*84.8) 3790 7565; (+84.66) 380 9537 Fax: (*B4.8) 3790 7566, (+84.66) 389 9536 •Emat{: century@hem.vnn.vn, csf@century.w - Webdts: www theky vn

Century Synthetic Fiber Corporation Separate Financial Statement

December 31, 2025

Century Synthetic Fiber Corporation

TABLE OF CONTENTS

General information

Report of the Board ofManagement Separate Balance Sheet Quarter IV.2025 Separate Income Statement Quarter IV.2025 Separate Cash Flow Quarter IV.2025

Notes to the Separate Financial Statements for Quarter IV.2025

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