# EDGAR Filing Document

**Accession Number:** 0001487326
**File Stem:** 0001279569-26-000307
**Filing Date:** 2026-4
**Character Count:** 5339
**Document Hash:** 46e4bc7df95aa9156899df802beda58e
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0001279569-26-000307.hdr.sgml**: 20260416

**ACCESSION NUMBER**: 0001279569-26-000307

**CONFORMED SUBMISSION TYPE**: 6-K

**PUBLIC DOCUMENT COUNT**: 3

**CONFORMED PERIOD OF REPORT**: 20260416

**FILED AS OF DATE**: 20260416

**DATE AS OF CHANGE**: 20260416

**FILER**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** OceanaGold Corp
- **CENTRAL INDEX KEY:** 0001487326
- **STANDARD INDUSTRIAL CLASSIFICATION:** METAL MINING [1000]
- **ORGANIZATION NAME:** 01 Energy & Transportation
- **EIN:** 000000000
- **STATE OF INCORPORATION:** A1
- **FISCAL YEAR END:** 1231

**FILING VALUES:**
- **FORM TYPE:** 6-K
- **SEC ACT:** 1934 Act
- **SEC FILE NUMBER:** 001-43215
- **FILM NUMBER:** 26866403

**BUSINESS ADDRESS:**
- **STREET 1:** LEVEL 5, 250 COLLINS STREET
- **CITY:** MELBOURNE, VIC
- **STATE:** C3
- **ZIP:** 3000
- **BUSINESS PHONE:** 61 3 9656 5300

**MAIL ADDRESS:**
- **STREET 1:** LEVEL 5, 250 COLLINS STREET
- **CITY:** MELBOURNE, VIC
- **STATE:** C3
- **ZIP:** 3000

**UNITED STATES**

**SECURITIES AND EXCHANGE COMMISSION**

**Washington, D.C. 20549**

**FORM 6-K**

**REPORT OF FOREIGN PRIVATE ISSUER**

**Pursuant to Rule 13a-16 or 15d-16 of**

**the Securities Exchange Act of 1934**

For the month of April, 2026 Commission File Number: 001-43215

<u>OceanaGold Corporation</u>

(Translation of registrant's name into English)

**Suite 1020, 400 Burrard Street**

**Vancouver, British Columbia V6C 3A6**

**Canada**

(Address of principal executive offices)

&nbsp;&nbsp; Indicate by check mark whether the registrant files or will file annual reports under cover of Form 20-F or Form 40-F.<br>Form 20-F ☐ Form 40-F ☒<br>

**<br>EXHIBIT INDEX**

<u>Exhibit</u> <u>Description</u> <br> [99.1](ex991.htm) [News Release dated April 16, 2026](ex991.htm)

<br> **FORM 6-K**

**SIGNATURES**

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned, thereunto duly authorized.

---

| | | |
|:---|:---|:---|
|  | &nbsp;&nbsp;OceanaGold Corporation | &nbsp;&nbsp;OceanaGold Corporation |
| &nbsp;&nbsp;DATE: April 16, 2026 | &nbsp;&nbsp;By: | &nbsp;&nbsp;*<u>/s/Liang Tang</u>* |
|  | &nbsp;&nbsp;Name: | &nbsp;&nbsp;Liang Tang |
|  | &nbsp;&nbsp;Title: | &nbsp;&nbsp;Executive Vice President, General Counsel and Company Secretary |

---

## Exhibit 99.1

**Exhibit 99.1**

![](logo.jpg)

**OceanaGold Provides Notice of First Quarter 2026 Results, Conference Call, and 2026 Annual Meeting of the Shareholders**

VANCOUVER, BC, April 16, 2026 /CNW/ - OceanaGold Corporation (TSX: OGC) (NYSE: OGC) ("OceanaGold" or the "Company") will release its operational and financial results for the first quarter of 2026 after market close on Wednesday, May 6, 2026. The results will be made available on the Company's website at www.oceanagold.com. The Company will hold its 2026 annual meeting of the shareholders (the "AGM") on Tuesday, June 9, 2026.

**First Quarter 2026 Results Conference Call Details**

Senior management will host a conference call and webcast to discuss the first quarter 2026 results on Thursday, May 7, 2026, at 10:00am EDT (7:00am PDT). To participate in the conference call, please use one of the following methods:

Webcast: https://app.webinar.net/8KkdZq6zb7e<br> Toll-free North America: 1-888-510-2154<br> International: 1-437-900-0527

If you are unable to attend the call, a recording will be made available on the Company's website.

**Virtual AGM Details**

The Company will hold its AGM on Tuesday, June 9, 2026, at 12:00pm EDT (9:00am PDT). The meeting will be held virtually via a live webcast accessible on the day at: https://www.meetnow.global/MNHGK99.

The record date to determine the holders of the Company's common shares who are entitled to receive notice of, and to vote at, the AGM is April 23, 2026. Detailed voting and participation instructions for eligible shareholders will be provided in the Company's AGM Management Information Circular, expected to be published on the Company's website in early May 2026.

**About OceanaGold**

OceanaGold is a global intermediate gold and copper producer committed to safely and responsibly maximizing the generation of Free Cash Flow from our operations and delivering strong returns for our shareholders. We have a portfolio of four operating mines: the wholly-owned Haile Gold Mine in the United States of America; the wholly-owned Macraes and Waihi operations in New Zealand; and the 80%-owned Didipio Mine in the Philippines.

View original content to download multimedia:https://www.prnewswire.com/news-releases/oceanagold-provides-notice-of-first-quarter-2026-results-conference-call-and-2026-annual-meeting-of-the-shareholders-302744035.html

SOURCE OceanaGold Corporation

View original content to download multimedia: http://www.newswire.ca/en/releases/archive/April 2026/16/c3404.html

%CIK: 0001487326

**For further information:** For further information please contact: Investor Relations: Rebecca Henare, VP, Investor Relations, Tel: +1 604-678-4095, ir@oceanagold.com; Valerie Burns, Manager, Investor Relations, Tel: +1 604-235-0742, ir@oceanagold.com; Media Relations: Louise Burgess, VP, Communications, Tel: +1 604-403-2019, media@oceanagold.com

CO: OceanaGold Corporation

CNW 07:00e 16-APR-26