AMENDMENT OF SOLICITATION/MODIFICATION OF

1. CONTRACT ID CODE

PAGE OF PAGES

1 2

2. AMENDMENT/MODIFICATION NO.

00004

3. EFFECTIVE DATE

2/05/2026

4. REQUISITION/PURCHASE REQ. NO.

5. PROJECT NO. (If applicable)

6. ISSUED BY CODE 7. ADMINISTERED BY (If other than Item 6) CODE Centers for Disease Control and Prevention

(CDC)

Office of Acquisition Services (OAS) 2900 Woodcock Blvd, MS TCU-4 Atlanta, GA 30341-4004

Centers for Disease Control and Prevention (CDC) Office of Acquisition Services (OAS) 2900 Woodcock Blvd, MS TCU-4 Atlanta, GA 30341-4004

8. NAME AND ADDRESS OF CONTRACTOR (No., street, county, State and ZIP Code)

All offerors.

X

9A. AMENDMENT OF SOLICITATION NO.

75D301-26-R-73374

9B. DATED (See Item 11)

12/11/2025

10A. MODIFICATION OF CONTRACT/ORDER NO.

10B. DATED (See Item 13)

CODE FACILITY CODE

11. THIS ITEM ONLY APPLIES TO AMENDMENTS OF SOLICITATIONS

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

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 1 copies of the amendment; (b) By acknowledging receipt of this amendment on each copy of the offer submitted; or (c) By separate letter or telegram which includes a reference to the solicitation and amendment numbers. FAILURE OF YOUR ACKNOWLEGMENT 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 telegram or letter, provided each telegram or letter makes reference to the solicitation and this amendment, and is received prior to the opening hour and date specified.

12. ACCOUNTING AND APPROPRIATION DATA (If required) N/A

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

IT MODIFIES THE CONTRACT/ORDER NO. AS DESCRIBED IN ITEM 14.

A. THIS CHANGE ORDER IS ISSUED PURSUANT TO: (Specify authority) THE CHANGES SET FORTH IN ITEM 14 ARE MADE IN THE CONTRACT ORDER NO. IN

B. THE ABOVE NUMBERED CONTRACT/ORDER IS MODIFIED TO REFLECT THE ADMINISTRATIVE CHANGES (such as changes in paying office, appropriation date, 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)

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

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

See Page 2 to follow.

Offerors are to acknowledge receipt of this Amendment 00004 with proposal submission.

See Block 14 on page 1 of the Solicitation and Block 11 of this Amendment.

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.

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

16A. NAME OF CONTRACTING OFFICER

David Eccleston

15B. CONTRACTOR/OFFEROR

(Signature of person authorized to sign)

15C. DATE SIGNED

16B. UNITED STATES OF AMERICA

BY ___________________________________________

(Signature of Contracting Officer)

16C. DATE SIGNED

2/05/2026

NSN 7540-01-152-8070 STANDARD FORM 30 (REV. 10-83)

PREVIOUS EDITION UNUSABLE 30-105 Prescribed by GSA

FAR (48 CFR) 53.243

ITEM 10A.

Amendment 00004 – 75D301-26-R-73374

The purpose of this Amendment 00004 is to do the following:

1. Subcontracting Plan – Due to the issues with the submission of the subcontracting plan through the SBCX system, Offeror shall submit their subcontracting plan with their proposal via email to the parties listed below.

2. Offerors are advised that David Eccleston has replaced Megan Kelly as the primary POC for this requirement. Going forward, interested offerors are to include the following individuals on all coorespondence regarding this requirement:

Contracts Specialist: David Eccleston, upx5@cdc.gov

Contracting Officer: Liubov Kriel, vyh1@cdc.gov, 770-488-2856

3. There is no extension to the receipt date of proposal as a result of Amendment 0004. Proposals are due no later than 10AM EST on Monday, February 9, 2026.

4. The execution of this amendment 00004 by any offeror shall serve as such offeror's acknowledgement of receipt of Amendment 0001, Amendment 0002 and Amendment 0003.

Below is the list of all attachments that are posted with this amendment 00004:

1. HHS Subcontracting Template mailto:upx5@cdc.gov mailto:vyh1@cdc.gov

AMENDMENT OF SOLICITATION/MODIFICATION OF CONTRACT