# EDGAR Filing Document

**Accession Number:** 0001946425
**File Stem:** 0001193125-23-010289
**Filing Date:** 2023-1
**Character Count:** 2594
**Document Hash:** 53da213d9675a0bd306810646aa6e54e
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0001193125-23-010289.hdr.sgml**: 20230118

**ACCESSION NUMBER**: 0001193125-23-010289

**CONFORMED SUBMISSION TYPE**: 425

**PUBLIC DOCUMENT COUNT**: 18

**FILED AS OF DATE**: 20230118

**DATE AS OF CHANGE**: 20230118

**SUBJECT COMPANY**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** Decarbonization Plus Acquisition Corp IV
- **CENTRAL INDEX KEY:** 0001848959
- **STANDARD INDUSTRIAL CLASSIFICATION:** BLANK CHECKS [6770]
- **IRS NUMBER:** 000000000
- **STATE OF INCORPORATION:** E9
- **FISCAL YEAR END:** 1231

**FILING VALUES:**
- **FORM TYPE:** 425
- **SEC ACT:** 1934 Act
- **SEC FILE NUMBER:** 001-40731
- **FILM NUMBER:** 23535272

**BUSINESS ADDRESS:**
- **STREET 1:** 2744 SAND HILL ROAD
- **CITY:** MENLO PARK
- **STATE:** CA
- **ZIP:** 94025
- **BUSINESS PHONE:** (212) 993-0076

**MAIL ADDRESS:**
- **STREET 1:** 2744 SAND HILL ROAD
- **CITY:** MENLO PARK
- **STATE:** CA
- **ZIP:** 94025
**FILED BY**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** Hammerhead Energy Inc.
- **CENTRAL INDEX KEY:** 0001946425
- **STANDARD INDUSTRIAL CLASSIFICATION:** OIL AND GAS FIELD EXPLORATION SERVICES [1382]
- **IRS NUMBER:** 000000000
- **STATE OF INCORPORATION:** A0
- **FISCAL YEAR END:** 1231

**FILING VALUES:**
- **FORM TYPE:** 425

**BUSINESS ADDRESS:**
- **STREET 1:** EIGHTH AVENUE PLACE
- **STREET 2:** EAST TOWER 525 8 AVE SW SUITE 2700
- **CITY:** CALGARY
- **STATE:** A0
- **ZIP:** T2P 1G1
- **BUSINESS PHONE:** 1 403-930-0560

**MAIL ADDRESS:**
- **STREET 1:** EIGHTH AVENUE PLACE
- **STREET 2:** EAST TOWER 525 8 AVE SW SUITE 2700
- **CITY:** CALGARY
- **STATE:** A0
- **ZIP:** T2P 1G1

**Filed by Hammerhead Energy Inc.<br>Pursuant to Rule 425 under the Securities Act of 1933<br>and deemed filed pursuant to Rule14a-12<br>under the Securities Exchange Act of 1934<br>Subject Company: Decarbonization Plus Acquisition Corporation IV<br>Commission File No.: 001-40731**![LOGO](g612835ex99_1p1g1.jpg)

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