48 C.F.R. § 15.506 : Federal Acquisition Regulations System — FEDERAL ACQUISITION REGULATION — CONTRACTING METHODS AND CONTRACT TYPES — CONTRACTING BY NEGOTIATION — PREAWARD, AWARD, AND POSTAWARD NOTIFICATIONS, PROTESTS, AND MISTAKES — Postaward debriefing of offerors

(a)
(1) An offeror, upon its written request received by the agency within 3 days after the date on which that offeror has received notification of contract award in accordance with 15.503(b), shall be debriefed and furnished the basis for the selection decision and contract award.
(2) To the maximum extent practicable, the debriefing should occur within 5 days after receipt of the written request. Offerors that requested a postaward debriefing in lieu of a preaward debriefing, or whose debriefing was delayed for compelling reasons beyond contract award, also should be debriefed within this time period.
(3) An offeror that was notified of exclusion from the competition (see 15.505(a)), but failed to submit a timely request, is not entitled to a debriefing.
(4)
(i) Untimely debriefing requests may be accommodated.
(ii) Government accommodation of a request for delayed debriefing pursuant to 15.505(a)(2), or any untimely debriefing request, does not automatically extend the deadlines for filing protests. Debriefings delayed pursuant to 15.505(a)(2) could affect the timeliness of any protest filed subsequent to the debriefing.
(b) Debriefings of successful and unsuccessful offerors may be done orally, in writing, or by any other method acceptable to the contracting officer.
(c) The contracting officer should normally chair any debriefing session held. Individuals who conducted the evaluations shall provide support.
(d) At a minimum, the debriefing information shall include-
(1) The Government's evaluation of the significant weaknesses or deficiencies in the offeror's proposal, if applicable;
(2) The overall evaluated cost or price (including unit prices), and technical rating, if applicable, of the successful offeror and the debriefed offeror, and past performance information on the debriefed offeror;
(3) The overall ranking of all offerors, when any ranking was developed by the agency during the source selection;
(4) A summary of the rationale for award;
(5) For acquisitions of commercial products, the make and model of the product to be delivered by the successful offeror; and
(6) Reasonable responses to relevant questions about whether source selection procedures contained in the solicitation, applicable regulations, and other applicable authorities were followed.
(e) The debriefing shall not include point-by-point comparisons of the debriefed offeror's proposal with those of other offerors. Moreover, the debriefing shall not reveal any information prohibited from disclosure by 24.202 or exempt from release under the Freedom of Information Act ( 5 U.S.C. 552 ) including-
(1) Trade secrets;
(2) Privileged or confidential manufacturing processes and techniques;
(3) Commercial and financial information that is privileged or confidential, including cost breakdowns, profit, indirect cost rates, and similar information; and
(4) The names of individuals providing reference information about an offeror's past performance.
(f) An official summary of the debriefing shall be included in the contract file.

48 C.F.R. §15.506

86 FR 61026, 12/6/2021