Solicitation
U.S. National Science Foundation (NSF) X-Labs Initiative
NSF-OTASO-FY26-XLabsInitative
National Science Foundation, Directorate for Technology, Innovation, and Partnerships (Tip). Research and Development in the Physical, Engineering, and Life Sciences (except Nanotechnology and Biotechnology).
Offers due
May 14, 2028 at 3:00 PM EDT
561 days from now. Posted September 18, 2026, first published May 14, 2026.
Get an email when this is amended, when the deadline moves and when it is awarded.Watch it
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Description
As published on SAM.gov.
NSF amended this solicitation on June 23, 2026. Section 6.1.1 has been updated. No other changes were made.
**********************************************
The U.S. National Science Foundation (NSF), Directorate for Technology, Innovation and Partnerships (TIP), announces the NSF X-Labs Other Transaction Agreement Solutions Offering (OTASO).
The NSF X-Labs initiative is a flexible, outcomes-driven effort to build and accelerate novel platform technologies capable of unlocking new sectors, advancing use-inspired scientific breakthroughs, and supporting U.S. leadership in science and technology. Through this OTASO, NSF is soliciting proposals from domestic responsible entities capable of establishing full-time, interdisciplinary R&D teams with the operational autonomy, technical expertise, and organizational flexibility necessary to pursue ambitious missions aligned with NSF X-Labs Topic Announcements.
NSF anticipates making one or more Other Transaction (OT) contract awards.
This OTASO is not a FAR-based procurement contract solicitation and is not a financial assistance opportunity. NSF will evaluate submissions in accordance with the procedures and criteria set forth in the OTASO and any applicable Topic Announcement.
This posting shall not be construed as an obligation on the part of the Government. The Government is not obligated to make any award as a result of this notice. The Government will not pay for any information submitted or for any costs incurred in responding to this notice.
Any information received becomes the property of the Government and will not be returned to the submitter. Responses may also be subject to disclosure under the Freedom of Information Act (FOIA) or as otherwise required by law.
Attachments
Files listed on SAM.gov. The ones we hold a copy of download from here; the rest open SAM's download, which needs no account.
- NSF-OTASO-FY26-XLabsInitiative-AttachmentA.pdf116 KB, May 14, 2026
- X-Labs FAQ.pdf211 KB, July 1, 2026
Publications
Every notice SAM.gov issued under this solicitation number, oldest first. Each is a separate record on SAM.
May 14, 2026
Solicitation
Due May 14, 2028 at 3:00 PM EDT. SAM.gov, notice 0918909712164c78af1ef29055a02f7b
7 revisions on SAM
- September 18, 2026: publish, solicitation
- September 16, 2026: publish, solicitation
- July 1, 2026: publish, solicitation
- June 23, 2026: publish, solicitation
- May 14, 2026: publish, solicitation
- May 14, 2026: publish, solicitation
- May 14, 2026: publish, solicitation
May 14, 2026
Solicitation
Due May 14, 2028 at 3:00 PM EDT. SAM.gov, notice 0da4e39df20f481ca9299b0edefe23d2
7 revisions on SAM
- September 18, 2026: publish, solicitation
- September 16, 2026: publish, solicitation
- July 1, 2026: publish, solicitation
- June 23, 2026: publish, solicitation
- May 14, 2026: publish, solicitation
- May 14, 2026: publish, solicitation
- May 14, 2026: publish, solicitation
May 14, 2026
Solicitation
U.S. National Science Foundation (NSF) X-Labs Initative
Due May 14, 2028 at 3:00 PM EDT. SAM.gov, notice d90ad2f0990b4bde83a844370480ed54
7 revisions on SAM
- September 18, 2026: publish, solicitation
- September 16, 2026: publish, solicitation
- July 1, 2026: publish, solicitation
- June 23, 2026: publish, solicitation
- May 14, 2026: publish, solicitation
- May 14, 2026: publish, solicitation
- May 14, 2026: publish, solicitation
June 23, 2026
Solicitation
Due May 14, 2028 at 3:00 PM EDT. SAM.gov, notice dc94a6e5b9c14bb1ade1d3ac9845122c
7 revisions on SAM
- September 18, 2026: publish, solicitation
- September 16, 2026: publish, solicitation
- July 1, 2026: publish, solicitation
- June 23, 2026: publish, solicitation
- May 14, 2026: publish, solicitation
- May 14, 2026: publish, solicitation
- May 14, 2026: publish, solicitation
July 1, 2026
Solicitation
Due May 14, 2028 at 3:00 PM EDT. SAM.gov, notice ad171e27016a45ce8924d7e4bcdcb74e
7 revisions on SAM
- September 18, 2026: publish, solicitation
- September 16, 2026: publish, solicitation
- July 1, 2026: publish, solicitation
- June 23, 2026: publish, solicitation
- May 14, 2026: publish, solicitation
- May 14, 2026: publish, solicitation
- May 14, 2026: publish, solicitation
September 16, 2026
Solicitation
Due May 14, 2028 at 3:00 PM EDT. SAM.gov, notice 95a79314b838428eabc74dc8a9507e3d
6 revisions on SAM
- September 16, 2026: publish, solicitation
- July 1, 2026: publish, solicitation
- June 23, 2026: publish, solicitation
- May 14, 2026: publish, solicitation
- May 14, 2026: publish, solicitation
- May 14, 2026: publish, solicitation
September 18, 2026
Solicitation
Due May 14, 2028 at 3:00 PM EDT. SAM.gov, notice 9ed96c4feb2b43d998c110050a0f6e45
7 revisions on SAM
- September 18, 2026: publish, solicitation
- September 16, 2026: publish, solicitation
- July 1, 2026: publish, solicitation
- June 23, 2026: publish, solicitation
- May 14, 2026: publish, solicitation
- May 14, 2026: publish, solicitation
- May 14, 2026: publish, solicitation
Points of contact
- X-LabsXLabs@nsf.gov