Do I report my 401k on my taxes?

I have a 401k. I haven't withdrawn anything and my company offers a 4% match. Do I need to report my 401k on my taxes? I'm unsure whether 401ks are already taxed or if I need to report it.

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If you made any contributions to the 401(k) in 2024 that will be included on your W-2 in box 12 with a code of D. That information is not entered anywhere else on a tax return.