Employee vs. Employer Contributions
The Noom, Inc.. 401(k) Plan likely includes both employee deferrals and employer-matching contributions. Under a QDRO, only the portion of the retirement balance earned during the marriage is typically divided. That means pre-marital contributions are usually excluded, and the division applies only to the marital share.
Employer matching contributions may be subject to a vesting schedule. If the participant is not fully vested, some of the employer match may be forfeited upon employment termination or divorce. That can significantly affect what the non-participant spouse receives.

