Late 10-K Filing Notification - iSpecimen Inc.

NT 10-K 1 ea0283809-nt10k_ispecimen.htm NOTIFICATION OF LATE FILING

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM 12b-25

NOTIFICATION OF LATE FILING

(Check One): ☒ Form 10-K ☐ Form 20-F ☐ Form 11-K ☐ Form 10-Q ☐ Form 10-D ☐ Form N-SAR ☐ Form N-CSR

For Period Ended: December 31, 2025

☐ Transition Report on Form 10-K

☐ Transition Report on Form 20-F

☐ Transition Report on Form 11-K

☐ Transition Report on Form 10-K

☐ Transition Report on Form N-SAR

For the Transition Period Ended: _____________________________________

Read Instructions (on back page) Before Preparing
Form. Please Print or Type.

NOTHING IN THIS FORM SHALL BE CONSTRUED TO IMPLY
THAT THE COMMISSION HAS VERIFIED ANY INFORMATION CONTAINED HEREIN.

If the notification relates to a portion of the
filing checked above, identify the Item(s) to which the notification relates:

PART I — REGISTRANT INFORMATION

| Full name of Registrant: | | iSpecimen Inc. |
| | | |
| Address of principal executive office:

City State and ZIP Code: | | 8 Cabot Road, Suite 1800

Woburn, MA 08101 |

PART II — RULES 12b-25(b) AND (c)

If the subject report could not be filed without
unreasonable effort or expense and the registrant seeks relief pursuant to Rule 12b-25(b), the following should be completed (Check box
if appropriate)

| | (a) | The reasons described in reasonable detail in Part III of this form could not be eliminated without unreasonable effort or expense; |
| ☒ | (b) | The subject annual report, semi-annual report, transition report on Form 10-K, Form 20-F, Form 11-K, Form N-CEN or Form N-CSR, or portion thereof, will be filed on or before the fifteenth calendar day following the prescribed due date; or the subject quarterly report or transition report on Form 10-Q or subject distribution report on Form 10-D, or portion thereof, will be filed on or before the fifth calendar day following the prescribed due date; and |
| | (c) | The accountant’s statement or other exhibit required by Rule 12(b)-25(c) has been attached if applicable. |

PART III — NARRATIVE

State below in reasonable detail the reasons why
the Form 10-K could not be filed within the prescribed time period.

The Registrant could not complete the filing of
its Annual Report on Form 10-K for the fiscal year ended December 31, 2025 (the “Form 10-K”) due to a delay in obtaining and
compiling information required to be included in the Form 10-K, which delay could not be eliminated by the Registrant without unreasonable
effort and expense. In accordance with Rule 12b-25 of the Securities Exchange Act of 1934, as amended, the Registrant will file the Form
10-K no later than the fifteenth calendar day following the prescribed due date.

PART IV — OTHER INFORMATION

| (1) | Name and telephone number of person to contact in regard to this notification: |

| Katharyn Field | | (781) 301-6700 |
| Name | | Telephone Number |

| (2) | Have all other periodic reports required under Section 13 or 15(d) of the Securities Exchange Act of 1934 or Section 30 of the Investment Company Act of 1940 during the preceding 12 months or for such shorter period that the registrant was required to file such report(s) been filed? If answer is no, identify report(s). |

☒ Yes ☐ No

| (3) | Is it anticipated that any significant change in results of operations from the corresponding period for the last fiscal year will be reflected by the earnings statements to be included in the subject report or portion thereof? |

☐ Yes ☒ No

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| iSpecimen Inc. |
| (Name of Registrant as Specified in Charter) |

has caused this notification to be signed on its
behalf by the undersigned hereunto duly authorized.

| Date: March 31, 2026 | /s/ Katharyn Field |
| | Katharyn Field |
| | Chief Executive Officer |

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