The IRS can reduce or remove penalties when there is a legitimate reason for the failure. For foreign founders, not knowing about the obligation is a recognized reasonable cause - but only if you can demonstrate you acted responsibly once you found out. It must be documented in writing alongside your catch-up filing.
If the IRS discovers the missed filing before you come forward, your abatement options narrow significantly. Voluntary disclosure is always the stronger position - it demonstrates good faith and gives you control over how the story is framed.
A professional who handles Form 5472 catch-up filings regularly will know how to structure the abatement request alongside the catch-up returns - simultaneously, not sequentially. This matters for both timing and framing with the IRS.