Short answer
Technically yes, but Wikipedia strongly discourages it. Editing about yourself or your company is a conflict of interest, and self written pages are deleted often. The accepted route is to disclose the connection, propose the draft for independent review, and supply facts and sources rather than judging your own notability.
What the rule actually says
Wikipedia does not ban you from editing a page about yourself. It strongly discourages it, because you cannot judge your own notability neutrally and the result tends to read as promotion.
If you do contribute, you are expected to disclose the connection, and to propose changes for others to review rather than publishing them yourself.
Why self written pages get deleted
Two reasons, and they usually arrive together. The tone is promotional, and the sources are things you control: your website, your interviews, your press releases.
Reviewers see this pattern all day. A page that reads as written by its subject gets extra scrutiny, and deletion discussions are short.
Paid editing has its own rule
If you pay someone to write or edit the page, that is paid editing, and Wikipedia requires the paid editor to declare who is paying them. This applies to agencies, freelancers and employees alike.
A page created through hidden payment is a violation, even if the content is accurate. It can lead to the page being removed and accounts being blocked, which damages the subject more than having no page.
What you can do instead
Supply the facts and the sources, not the verdict. Gather the independent articles about you, check them against the standard in the first guide, and hand them to a disclosed editor, or propose them on the page's talk page if one exists.
Do not edit the page yourself, and do not create sock accounts or ask friends to post it for you. That is treated as manipulation and is often detected.
If you are not ready
If independent coverage is thin, the best move is to earn it first, through real work and real press. Then a page is possible. Until then a lower bar site can carry a cited profile.