POSCO DX Largest Shareholder Ownership Maintained at 65.38% with Minor Open Market Purchase by Executive

POSCO DX disclosed the change in ownership of its largest shareholder and related parties as of July 1, 2026.
A total of 251 shares increased from the previous report, resulting from an open market purchase by executive Shim Min-seok.
The largest shareholder POSCO Holdings' stake remains unchanged at 65.38%, with no impact on the company's capital structure or financials.
[AI Summary]This filing is a routine report of a minor open market purchase by an executive, with no material effect on corporate or shareholder value. The stable shareholding of the largest shareholder indicates low governance risk.