Golden Sun Technology Group Ltd.

PROXY STATEMENT

The board of directors (the “Board of Directors”) of Golden Sun Technology Group Limited (the “Company”) is soliciting proxies for the annual general meeting of shareholders (the “Annual General Meeting”) of the Company to be held on November 23, 2026 at 10:00 a.m. Beijing Time (or as soon thereafter as the Class A Meeting has concluded or been adjourned). The Company will hold the Annual General Meeting at 3 rd Floor, Building C, Taian Building, No. 554 Chezhan Avenue, Lucheng District, Wenzhou, Zhejiang Province, People’s Republic of China. Shareholders will have equal opportunity to participate at the Annual General Meeting and engage with the directors, management, and other shareholders of the Company online, regardless of their geographic location.

Registered shareholders and duly appointed proxyholders will be able to attend, participate and vote at the Annual General Meeting in real time. Beneficial shareholders who hold their class A ordinary shares (the “Class A Ordinary Shares”) and class B ordinary shares of the Company ( “Class B Ordinary Shares,” and together with the Class A Ordinary Shares, the “Ordinary Shares”) through a broker, investment dealer, bank, trust corporation, custodian, nominee, or other intermediary who have not duly appointed themselves as proxyholder will be able to attend as guest and view the webcast, but will not be able to participate in or vote at the Annual General Meeting.

Only holders of the Ordinary Shares of the Company of record at the close of business on October 20, 2026 (the “Record Date”) are entitled to attend and vote at the Annual General Meeting or at any adjournment thereof. One or more members holding Ordinary Shares that represent not less than one-third (1/3) of the outstanding Ordinary Shares carrying the right to vote at the Annual General Meeting shall form a quorum.

Any shareholder entitled to attend and vote at the Annual General Meeting is entitled to appoint one or more proxies to attend and vote on such shareholder’s behalf. A proxy need not be a shareholder of the Company. Holders of Class A Ordinary Shares and Class B Ordinary Shares shall at all times vote together as one class on all resolutions submitted to a vote. Each Class B Ordinary Share shall entitle the holder thereof to fifty (50) votes on all matters subject to vote at the Annual General Meeting, and each Class A Ordinary Share shall entitle the holder thereof to one (1) vote on all matters subject to vote at the Annual General Meeting.

After carefully reading and considering the information contained in this proxy statement, including the annexes, please vote your shares as soon as possible so that your shares will be represented at the Annual General Meeting. Please follow the instructions set forth on the proxy card or on the voting instruction form provided by the record holder if your shares are held in the name of your broker or other nominee.