How do you add new information to an existing Wikipedia page?

Adding new information to a Wikipedia article on behalf of a client follows the same disclosed-COI process every time. Identify the new fact – a leadership change, a transaction, an award, a significant business milestone. Source it from independent secondary outlets (mainstream press, trade publications, regulatory filings as supporting documents but not the primary source). Open a Talk page section, propose the specific text to be added with the citations attached, and explain why the addition matters and is policy-compliant. Then wait for community editors to evaluate. Done well, the request is implemented cleanly. Done with primary sources only, promotional language, or weak citations, the request stalls or is rejected, and the same content is harder to get added the second time. The discipline is upstream.