# EDGAR Filing Document

**Accession Number:** 0001759631
**File Stem:** 9999999995-26-000736
**Filing Date:** 2026-3
**Character Count:** 1385
**Document Hash:** 98b7c7ea532a2d1aa92356d9d2c2392b
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**9999999995-26-000736.hdr.sgml**: 20260306

**ACCESSION NUMBER**: 9999999995-26-000736

**CONFORMED SUBMISSION TYPE**: EFFECT

**PUBLIC DOCUMENT COUNT**: 1

**FILED AS OF DATE**: 20260305

**DATE AS OF CHANGE**: 20260306

**EFFECTIVENESS DATE**: 20260305

**FILER**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** Hyliion Holdings Corp.
- **CENTRAL INDEX KEY:** 0001759631
- **STANDARD INDUSTRIAL CLASSIFICATION:** TRUCK & BUS BODIES [3713]
- **ORGANIZATION NAME:** 04 Manufacturing
- **EIN:** 000000000
- **STATE OF INCORPORATION:** DE
- **FISCAL YEAR END:** 1231

**FILING VALUES:**
- **FORM TYPE:** EFFECT
- **SEC ACT:** 1933 Act
- **SEC FILE NUMBER:** 333-293712
- **FILM NUMBER:** 26728365

**BUSINESS ADDRESS:**
- **STREET 1:** 1202 BMC DRIVE, SUITE 100
- **CITY:** CEDAR PARK
- **STATE:** TX
- **ZIP:** 78613
- **BUSINESS PHONE:** (833) 495-4466

**MAIL ADDRESS:**
- **STREET 1:** 1202 BMC DRIVE, SUITE 100
- **CITY:** CEDAR PARK
- **STATE:** TX
- **ZIP:** 78613

**FORMER COMPANY:**
- **FORMER CONFORMED NAME:** Tortoise Acquisition Corp.
- **DATE OF NAME CHANGE:** 20181120

### UNITED STATES
### SECURITIES AND EXCHANGE COMMISSION
**Washington, D.C. 20549**

## Notice of Effectiveness

**Date:** March 5, 2026

**Time:** 15:00:00

**Form Type:** S-3

---

**CIK:** 0001759631

**Company Name:** Hyliion Holdings Corp.

**File Number:** 333-293712