2026 07 23__Amendment 00004 80MSFC26R0002 SF30 and Continuation.pdf

Offers must acknowledge receipt of this amendment prior to the hour and date specified in the solicitation or as amended, by one of the following methods:

(a) By completing items 8 and 15, and returning or (c) By separate letter or electronic communication which includes a reference to the solicitation and amendment numbers. FAILURE OF YOUR ACKNOWLEDGMENT TO BE RECEIVED AT THE PLACE DESIGNATED FOR THE RECEIPT OF OFFERS PRIOR TO THE HOUR AND DATE SPECIFIED MAY RESULT IN REJECTION OF YOUR OFFER. If by virtue of this amendment you desire to change an offer already submitted, such change may be made by letter or electronic communication, provided each letter or electronic communication makes reference to the solicitation and this amendment, and is received prior to the opening hour and date specified.

E. IMPORTANT: Contractor is not is required to sign this document and return copies to the issuing office.

AMENDMENT OF SOLICITATION/MODIFICATION OF CONTRACT 1. CONTRACT ID CODE

2. AMENDMENT/MODIFICATION NUMBER 3. EFFECTIVE DATE 4. REQUISITION/PURCHASE REQUISITION NUMBER 5. PROJECT NUMBER (If applicable)

7. ADMINISTERED BY (If other than Item 6) CODE

STANDARD FORM 30 (REV. 11/2016)

Prescribed by GSA FAR (48 CFR) 53.243

FACILITY CODE

9A. AMENDMENT OF SOLICITATION NUMBER

9B. DATED (SEE ITEM 11)

10A. MODIFICATION OF CONTRACT/ORDER NUMBER

10B. DATED (SEE ITEM 13)

11. THIS ITEM ONLY APPLIES TO AMENDMENTS OF SOLICITATIONS

The above numbered solicitation is amended as set forth in Item 14. The hour and date specified for receipt of Offers is extended. is not extended.

12. ACCOUNTING AND APPROPRIATION DATA (If required) copies of the amendment; (b) By acknowledging receipt of this amendment on each copy of the offer submitted;

13. THIS ITEM APPLIES ONLY TO MODIFICATIONS OF CONTRACTS/ORDERS.

IT MODIFIES THE CONTRACT/ORDER NUMBER AS DESCRIBED IN ITEM 14.

CHECK ONE A. THIS CHANGE ORDER IS ISSUED PURSUANT TO: (Specify authority) THE CHANGES SET FORTH IN ITEM 14 ARE MADE IN THE CONTRACT ORDER

NUMBER IN ITEM 10A.

B. THE ABOVE NUMBERED CONTRACT/ORDER IS MODIFIED TO REFLECT THE ADMINISTRATIVE CHANGES (such as changes in paying office, appropriation data, etc.) SET FORTH IN ITEM 14, PURSUANT TO THE AUTHORITY OF FAR 43.103(b).

C. THIS SUPPLEMENTAL AGREEMENT IS ENTERED INTO PURSUANT TO AUTHORITY OF:

D. OTHER (Specify type of modification and authority)

Except as provided herein, all terms and conditions of the document referenced in Item 9A or 10A, as heretofore changed, remains unchanged and in full force and effect.

15C. DATE SIGNED

15A. NAME AND TITLE OF SIGNER (Type or print)

16C. DATE SIGNED

16A. NAME AND TITLE OF CONTRACTING OFFICER (Type or print)

14. DESCRIPTION OF AMENDMENT/MODIFICATION (Organized by UCF section headings, including solicitation/contract subject matter where feasible.)

PAGE OF PAGES

6. ISSUED BY CODE

8. NAME AND ADDRESS OF CONTRACTOR (Number, street, county, State and ZIP Code) (X)

CODE

15B. CONTRACTOR/OFFEROR

(Signature of person authorized to sign)

16B. UNITED STATES OF AMERICA

(Signature of Contracting Officer)

Previous edition unusable

00004

Casey Hardy, Contracting Officer, casey.h.hardy@nasa.gov

For a complete description of Amendment 00004, reference the following SF30 continuation page. Offerors must acknowledge all amendments to the Engineering Services and Science Capability Augmentation (ESSCA) II solicitation, demonstrated by submission of a signed version of each amendment SF30 in Volume IV-Contract, as part of their response to Request for Proposal (RFP) 80MSFC26R0002.

NASA

Marshall Space Flight Center Office of Procurement Marshall Space Flight Center, AL 35812

80MSFC26R0002

1 2

07/23/2026

01/30/2026

SF30 Block 14 Continuation Page

SUMMARY OF CHANGES

(a) The primary purpose of Amendment 00004 is to respond to questions submitted after the release of Amendment 00003, adjust the Attachment L-1 Excel Pricing Model (EPM), and update the wage determinations.

The due date for proposal submission remains as Thursday, August 6, 2026, 2:00 p.m.

Central Time.

(b) File 2026 07 23__Amendment 00003 80MSFC26R0002 Amendment 00003 to Amendment 00004 Appendix C Change Log.pdf provides a list of changes made between issuance of Amendment 00003 and Amendment 00004.

(c) The following solicitation files replace prior versions as a result of changes to the 80MSFC26R0002 solicitation.

2026 07 23__Amendment 00004 80MSFC26R0002 Sections J-M.docx

2026 07 23__Amendment 00004 ESSCA II Attachment L-1 Excel Pricing Model

(d) Failure by the Offeror to acknowledge receipt of this amendment on the SF30, Amendment of Solicitation/Modification of Contract, by the due date for receipt of proposals may result in a determination that the proposal is unacceptable and therefore ineligible for award.

All other terms and conditions of the solicitation remain unchanged.