§37.830. May I let a recipient charge pre-award costs to the agreement? — Inbound Citations

(k) If the TIA is an expenditure-based award, you must specify the standards that both for-profit and nonprofit participants are to use to determine which costs may be charged to the project, in accordance with §§ 37.625 through 37.635, as well as § 37.830.

No, you may not count any participant's costs of prior research as a cost sharing contribution. Only the additional resources that the recipient will provide to carry out the current project (which may include pre-award costs for the current project, as described in § 37.830) are to be counted.