Notice of transaction in shares of internal person Dinh Ngoc Hoa

‌CÔNG TY CӘ PH⑬N SӦI THӂ KӸ

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: 2026-01-30 09:58+07:00

CONG TY CO PHA STJI THE KY

So/No: -26/CV-CTTK

CQNG IIOA IIQI CIIU NGIIIA VIJET NAM

D9c leap - Tq do - Hanh phiic

TP.HCMHochiminh cii, ngay/dofe J0 the:tfl Off q/fi fff f1"t year 'f 26

C NG BE THING TIN INMORMA TION DISCLOSURE TREN CONG THONG TIN DIEN T*Ef CUA UY BAN ON THE STATE sEcvmT rs CHUG KHOAN NHA NTSC VA SH GIAO D}CH COMMISSIO7YAND HOCHIMINH STOCK

CHUG KHOAN TP.HCMEXCHANGE'S PORTAL

Kinh g"irifTo: - Uy ban Chiing khoñn Nhñ nirñc

- SP Giao dJch chiing khoñn TP.HCM

• Ten to chic: Cong ty cfi phan Spi The Ky

  Organization name: Centur)' Synthctic Fiber Corporation

• Ma chñng khoan/bicker: STK

• Dia chi tru sd chinh: Lo B1-1, Khu cfing nghiep Tay Bâc Cu Chi, Xa Tan An Hoi, TP.HCM

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

  - Dien thoai/Ref.: (3 84.276) 388 756s Fax: ( 184.276) 388 7566

• Nguoi thqc hien cong bfi thong tin. Dâng Trieu H6a - Chuc vu: Chu tich HDQT

  Spokesman.' Dang Trieu Hoa - Title.' Chairman ofthe BOD

• Loai thong tin cñng bfi/type of information disclosure:

  O dinh k'y/periodic O bat thu6ngfirregular O 24h/24 hours O theo yéu cau/on demaxd

  Noi dung thñng tin cñng bolContents of inforrriation disclosure:

  Thfing bao giao dich co phiéu cua nguâi noi bo Dinh Ngpc Hoa

  Notice of transaction in shares of internal person Dinh Ngoc Hoa

  Thong tin nay 6â dlrqc cong bo trén trang thñng tin 6ign tir cua cong ty vao ngay30 /01/2026 tQ1 dir g dan: https://thel‹v.vn

  This information was published on the Company's website on X /01/2026 at the link.' httQS:/7theky.vn

  Téii cam két cac thñng tin csng bo trén day la dung sp' that va hoan toan ch|u trach nhiem trirñc phap luat ve noi dung cac thong tin da cong bo./

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

  Tâi lieu dinh kém/Altachments

  - Tni lieti lién qtinn dén viec CBTT. Documents related to the in%rmation disclosure.

  DAI DIEN TO CH'EFC1ONBEHALF OF THE COMPANY

  NGtYO DH DUN THEO PHA LUAT

  0 PHAN

  
  
  LEGAL REPRESENTATIVE

  ‌DINH NGQC HOA

  So: 01 26/BC CTTK

  No.' 01-26/BC-CTTK

  CQNG HOA XA HQI CHU NGHiA VIET NAM

  Djc ljp - Tidy do - Hanh phiic

  THF. SOA'.SAI.UT RFPPIJRI.If'. GF VIETNA/I Independence - Freedom - Happiness
  
  

  THONG BAO

  Giao djch co phieu ciia ngu-iYi n9i b9

  NOTICE OF TRANSACTION IN SPARES OF INTER/VAL PERSON

  Kinh grit:

  • Uy ban Chang khoan Nha nirñc;

  • Sd Giao d|ch chñng khoan;

  • Cñng ty co phan Sqi l'he Ky.

    To.

  • The State Securities Commission,'

  • The Stock Exchange;

  • Century Synthetic Fiber Corporation.

  1. Thñng tin ve ca nhfin thirc hien giao d|ch//iiformafion on individual conducting the transaction.'

     • I Ip vd tén ca nhan /Name of individual.' DINIINGQC IIOA

     • Quoc tich/Nafioria/i(y: ict N cm.''l^ietiiuin

• So CMND, Ho chiéu, The can cirñc (doi vñi ca nhan) hoiac so Gray chñng nhan dang ky doanh nghiep, Gray phép hoat dong hoiac gray tñ phap ly tirong duong (dñi vñi to chirc), ngay cap, noi cap/Number of ID card7Passport (in case of an individual) or number ofBusiness Registration Certificate, Operation License or equivalent legal document (in case of an organisation), date of issue, place of issue.- CCCD so/Registration No.. 079179002343, cap iig‹ 5'.'‹lale ‹(' issue. 12/0.1:'2022, noi cap//a/‹zee o]"i,›sue. C.uc canh ,sit quan ly h5nli cliitili x'e trat tu x?a hoi,'Po/i‹ c' Jeyor/fIt?Jfi ‹7t? Gf/ñl/Jtl.'/f'fff/l't" uu:tnrigt'ineiil of'.so‹'ial orclc•i'.

  • Dja chi lien he/D|a chi try st chinh/Contact address: $‹› ? ‹ltc‹›'ng 6J9 Ey ISâu Diéu, XP I'liâi ii4fi, I'I'11£.'YI

  • Oien thoai/TefepAone. 053o"3I 6i194,' Fax: Email. Website

  • Chirc vq hien nay ii cong ty dat chung hoiac moi quan hp vñi cong ty dat chung/ Current position in the public company (i{any) or relationship with the public company: Thanh vién Ban Kiém Soft,' Menihc•r of they fi€9.$'

.3. Ma chñng khoan giao d|ch/ Securities code. STli

1. Cac tâi khoan giao d|ch co co phiéu neu tai muc 3/ Trading accounts having shares mentioned at item 3 above.'

   026C 106909 ii cñng ty chñng khoan/In the securities company. C'ong ty C'o phan Chung khoan VPS

2. So lirpng, ty ie co phiéu nam gitr trirñc khi th9c hipn giao dich/Number, ownership percentage of shares held hv•foru tho• traris'actioti.' 21 .763 ct› phieu, timing mug 0,0 163'» (21, 7ñ3 sIiui'es, u‹juivalv•tit /o P. 016" )

3. So lupng co phiéu doing ky ban/Number ofshares registered to sell:

   • Loai giao dich dang ky/Z'Jpe of transaction registered: Ban co phiéu /.tell shares

   • So lirqng co phiéu dang ky giao dich/ Number ofshares registeredfor trading: 14.250 cñ phieu,' 14.250 .s/ici/ es.

4. C*iâ tri giao djch Aii kién (tinh theo mpnh gia)/The expected value of tran,saction (which calculated ha,se.d nri par value): 142.500.000 dong''VND 14*, SOP. PPP.

5. So ltrpng, le co phiéu dir kién nam giir sau khi there hien giao djch/ Number and ownership percentage of shores expectecl to holcl afier the transaction. 7.51 3 co phiéu'fi, 'i73 .shnres, throng ttnyi•qtiivitlent to BIOS.5.%3.

6. Muc dich thtrc hien giao dich/Fui-jrose of tt-atisactioit.' DJri cñ phiévi /.Se•ll sliai'‹:.s

7. Phirong thirc giao dich/Me,f/io‹f of trnnsnr.tion.' Khérp lcnh

8. Thai gian dq kién thirc hien giao d|ch/Expected trading time. tii ngây/from 04/02.!2026 den ngay/ to US.*13,^2t)2G›

* So lv‹yng, le chñ:rig khoân co sâ n6m gitr tgi ngây thâng bâo giao dish/Number, ownership percentage of underlying securities held at the day of the notice.' 21.76›3 cfi phiéu. ttrcrng img 0,01 b% (21, 7d3 sliai e.s, e•quiv ileiil In

Not ulimi:

Itecipients:

• Nlur tién,

• Luti. VT,..

• Archived: .

CA NHAN CONG BO THONG TTN

REPOR TING INDIVIDUAL TO DISCLOSE INFORMA TI tN