# Notice of Modification to Contract N00189-21-D-Z043

Canonical: https://abierto.us/opportunities/n0018921rz008

- Solicitation number: N0018921RZ008
- Notice type: Special notice
- Status: No response deadline
- Department: Department of the Navy
- Agency: Department of the Navy
- Contracting office: NAVSUP FLT Log CTR Norfolk (N00189)
- NAICS: 541618 Other Management Consulting Services
- First posted: January 8, 2026
- Last posted: January 8, 2026
- SAM.gov: https://sam.gov/workspace/contract/opp/3f6513681aad44a78f99fcca1ce384bd/view

## Description

The purpose of this posting is to provide notice of the Governments intent to increase the ceiling value of Contract N0018921DZ043. This is a sole source action to be awarded as a modification to an existing Single Award Indefinite Delivery, Indefinite Quantity Firm-Fixed-Price D type contract, N00189-21-D-Z043, to increase the ceiling value of the contract to allow additional orders to be issued prior to the end of the contract.

The ordering/performance period of the contract remain unchanged and will end on 31 August 2026. The requirement will remain unchanged. This is not a request for proposals or capability statements. The follow-on contract to N0018921DZ043 has already been solicited.

Solicitation N0018925RZ115 for Engineering and Technical Support Services for ONI was solicited on 24 July 2025 and closed on 25 August 2025. Additional information, proposals, capabilities statements, etc. are not requested and will not be reviewed as the solicitation window for the follow-on has closed. The follow-on contract to N00189-21-D-Z043 will be awarded prior to 31 August 2026. This notice closes on 9 January 2026 at 12:00 PM EST.

## Publications

- January 8, 2026: Special notice. Notice 3f6513681aad44a78f99fcca1ce384bd. https://sam.gov/workspace/contract/opp/3f6513681aad44a78f99fcca1ce384bd/view

## Points of contact

- danielle.udinson@navy.mil

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Source: SAM.gov Contract Opportunities bulk extract. Confirm deadlines on SAM.gov before responding. Cite https://abierto.us/opportunities/n0018921rz008.