Report on Share Transactions by Internal Persons – the Company’s Trade Union

CLONG HOA XA HOI CHU NGHIA VIET NAM

D§c l§p - Tu' do - Hgnh phuc

THE SOCIALIST REPUBLIC OF VIETNAM

Independence - Freedom - Happiness

HCM City, ngây d0 thânp 01 nâm 2O2b

BAO CAO

Két qu6 gioo d{ch c6 phiéu cdo ngcfdi n§i b§

REPOeT ON eesu re or rnAN •ACT/ON IN Sl•l»ees or zNrEeNAL PEe:fiON

Kinh gñi:

Th6ng tin vé to chic th¿c hien giao d!ch/informal/on on organisation conducting the transaction:

Ten to chic/Name of organisation. C6ng do6n Cd sd Cong ty Co phdn X6y drfng ” xca/i 1i

Coteccons

Quoc ›!Ch//Vo/Mono//Yy.Viet Nom

Gioy phép hogt dong hodc giay td phop Iy tUdng dUong, ngoy cdp, ndi

cop/Number of Operation License or equivalent legal document, date of issue,

1. • Uy ban Chang kho6n Nha ncfâc;

   • Sd Gioo d!Chchñng kho6n;

   • C6ng ty CP Xdy ding Coteccons.

   • The Sfafe Securities Commission;

   • The Stock Exchange,-

   • Coteccons Construction joint Stock Company.

     place of issue.-

     D!• Chi lien he/D!^ Chi tru sé chinh/Contact address/address ofheadoffice.-236/6 Dien Bién Phd, PhUdng Gio D{inh, TP. HCI•1

     Dien thogi lién he/ Telephone.' Fox: Email

     Chic vu hien nay tgi cong ty dgi chung/Currentposifion in fhe public company:

     T6 chuc Chinh tr| - Xd hoi thuoc C6ng ty Co phdn Xdy dcfng Coteccons.

2. Mo chñng khoan giao d!ch/Secur/I/es code: CTD

3. Cdc tdi khoon giao d!ch co co phiéu néu tgi muc 3/ Trading accounts having shares mentioned of ifem fl above. tgi cong ty chñng khodn/ in the securities

4. So wgng, ty I/e co phiéu nom gif trUdc khi thee hien giao d!ch//VUmber, ownership percentage of shares held before fhe transaction.° 4.200 co phiéu/shares, chiém j Ie 0,004% tong so co phan dd phdt hdnh cda Cong ty/of fhe fotal issued shares of

   the Company.’

5. So ludng co phiéu ddng ky /Number of shares registered:

   Logi giao d!ch ddng ky/ Type of transaction registered. Nh n chuyén nhUNo rece/v'e shore rrons£er.

   So ludng co phiéu dong ky gioo d!ch//Vt/mber ors/lores reg'/s/ered for trading.-

   30.000 co phiéu/s/lores.

6. So ludng co phiéu dd giao d!ch//Vr/mbes or shores be/ng traded:

   Logi giao d!ch dd thUc hien/ Type of transaction executed: Nh§n chuyén

   nh‹r ng/ No receive shore transfer.

   So Iu ng co phiéu dd giao d!ch//Vt/mber a/ shores /roo’ecY: 30.000 co phiéu/ shares.

7. Gi6 tr! o giao d!ch (tinh theo menh gid)/ The value of executed transaction (calculated based on par value}.-300.OOO.000 d“éng/PND.

8. So ludng, ty I/e co phieu nam gif sau khi th¿c hien giao d!ch cda ngudi thUc hi{en giao d!ch/Number, ownership percentage of shares after the fransacfion held by the person executing the transaction.’ 34.200 co phiéu/shares, chiém ty ie 0,03°/ t6ng so co phon dd phdt h6nh cda Cong ty.

P. Phuong thñc giao d!ch/Ned//od o/ transact/on.'Chuyén quyén sâ h0u chUng kho6n th6ng quo Tong C6ng ty luu ky vd bd try chcfng khoon Viet Nam/ Transfer of ownership of securities through the Vietnam Securities Depository and Clearing Corporation (VSDC).

1. Thoi gian th c hien giao d!Ch/Trading lime:

   • Ng6y VSDC th c hien chuyén quyén scl h0u/Dole oromners///jo transfer by

     VSDC. 23/01/2026. .., ”o•.

   • Ng“ay hoon UI giao d!ch/Dole of transaction complefiorr. TO/01/2026.

2. Ly do khong hodn UI gioo d!ch (tr0dng hgp khong thUc hien hét so lUdng dân, ky)/ The reason for nof completing fhe transaction (in case all of the registere amounts nof being executed): Kh6ng cé//yooe.

   Ndi nh§n 6ec7/z7en/'•: TM. CONG DOAN C€f SO

   CHU TICH CONG DOAN

   (K , ghi  râhp tén, dânp dâu - néu câ)

   nome and seal - if any)

   én Th; Vi§t Ngo

   • NhU trén/is oj one

   • Lr/u/Com///ned. VT.