The filing fees applicable to Form I-129 and its L supplement are published in the USCIS fee schedule, Form G-1055, with premium processing available at a further fee. The larger expenditure is professional: preparing corporate evidence for a newly acquired entity takes real accounting and legal time.
Budget for the evidence, not just for the form
Amounts change periodically, so the fee schedule should be read directly rather than quoted from a summary. What surrounds it is more substantial. A recently completed acquisition needs its corporate story assembled by somebody who understands what an adjudicator is testing: purchase documents, share registers, registry extracts and proof that the American terminal is doing business.
Organisational charts have to be built rather than found, payroll evidence extracted, and the offered role described in functional language. Where the Maine terminal has been under the group's control for less than a year, a new-office petition adds a business plan, evidence of premises and proof the entity can support an executive or managerial role within twelve months. Premium processing buys speed and nothing else; it does not improve a thin record, and filing early with weak corporate evidence usually costs more than waiting a month and filing properly.