# EDGAR Filing Document

**Accession Number:** 0001506184
**File Stem:** 0001193125-26-135627
**Filing Date:** 2026-4
**Character Count:** 5485
**Document Hash:** a294b0e492ef3f62b0faa4ac9d8b542a
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0001193125-26-135627.hdr.sgml**: 20260401

**ACCESSION NUMBER**: 0001193125-26-135627

**CONFORMED SUBMISSION TYPE**: 3

**PUBLIC DOCUMENT COUNT**: 1

**CONFORMED PERIOD OF REPORT**: 20260318

**FILED AS OF DATE**: 20260401

**DATE AS OF CHANGE**: 20260401

**REPORTING-OWNER**: 

**OWNER DATA:**
- **COMPANY CONFORMED NAME:** Winckels Stephan Karel Gerard
- **CENTRAL INDEX KEY:** 0002123121

**ORGANIZATION NAME:**

**FILING VALUES:**
- **FORM TYPE:** 3
- **SEC ACT:** 1934 Act
- **SEC FILE NUMBER:** 001-35428
- **FILM NUMBER:** 26824579

**MAIL ADDRESS:**
- **ADDRESS IS A NON US LOCATION:** YES
- **STREET 1:** LEVEL 32, 264 GEORGE STREET
- **CITY:** SYDNEY, NSW
- **PROVINCE COUNTRY:** C3
- **ZIP:** 2000
**ISSUER**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** IMMUTEP Ltd
- **CENTRAL INDEX KEY:** 0001506184
- **STANDARD INDUSTRIAL CLASSIFICATION:** PHARMACEUTICAL PREPARATIONS [2834]
- **ORGANIZATION NAME:** 03 Life Sciences
- **EIN:** 000000000
- **STATE OF INCORPORATION:** C3
- **FISCAL YEAR END:** 0630

**BUSINESS ADDRESS:**
- **STREET 1:** LEVEL 32, SUITE 32.07 AUSTRALIA SQUARE
- **STREET 2:** 264 GEORGE STREET
- **CITY:** SYDNEY,
- **STATE:** C3
- **ZIP:** NSW 2000
- **BUSINESS PHONE:** 612 8315 7003

**MAIL ADDRESS:**
- **STREET 1:** LEVEL 32, SUITE 32.07 AUSTRALIA SQUARE
- **STREET 2:** 264 GEORGE STREET
- **CITY:** SYDNEY,
- **STATE:** C3
- **ZIP:** NSW 2000

**FORMER COMPANY:**
- **FORMER CONFORMED NAME:** Prima BioMed Ltd
- **DATE OF NAME CHANGE:** 20101119

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

## FORM 3

### INITIAL STATEMENT OF BENEFICIAL OWNERSHIP OF SECURITIES

[ ] Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

---

| | | |
|:---|:---|:---|
| **1. Name and Address of Reporting Person**<sup>*</sup><br>Winckels Stephan Karel Gerard<br><sub>(Last) (First) (Middle)</sub><br>LEVEL 32, AUSTRALIA SQUARE,<br>264 GEORGE STREET<br><sub>(Street)</sub><br>SYDNEY, NEW SOUTH WALES, AUSTRALIA 2000<br><sub>(City) (State) (Zip)</sub> | **3. Issuer Name and Ticker or Trading Symbol**<br>IMMUTEP Ltd [ IMMP ] | **5. If Amendment, Date of Original Filed (Month/Day/Year)**<br>  |
| **2. Date of Event Requiring Statement (Month/Day/Year)**<br>2026-03-18 | **4. Relationship of Reporting Person(s) to Issuer**<br>(Check all applicable)<br>[ ] Director   [ ] 10% Owner<br>[X] Officer (give title below)   [ ] Other (specify below)<br>_Chief Medical Officer_ | **6. Individual or Joint/Group Filing (Check Applicable Line)**<br>[X] Form filed by One Reporting Person<br>[ ] Form filed by More than One Reporting Person |

---

## Table I - Non-Derivative Securities Beneficially Owned

---

|  |  |  |  |
| --- | --- | --- | --- |
| 1. Title of Security | 2. Amount of Securities Beneficially Owned | 3. Ownership Form | 4. Nature of Indirect Beneficial Ownership |
| Ordinary Shares | 92935 | D |  |

---

## Table II - Derivative Securities Beneficially Owned

---

|  |  |  |  |  |  |  |  |
| --- | --- | --- | --- | --- | --- | --- | --- |
| 1. Title of Derivative Security | 2. Date Exercisable and Expiration Date (Month/Day/Year) | 2. Date Exercisable and Expiration Date (Month/Day/Year) | 3. Title and Amount of Underlying Securities | 3. Title and Amount of Underlying Securities | 4. Conversion or Exercise Price | 5. Ownership Form | 6. Nature of Indirect Beneficial Ownership |
| 1. Title of Derivative Security | Date Exercisable | Expiration Date | Title | Amount or Number of Shares | 4. Conversion or Exercise Price | 5. Ownership Form | 6. Nature of Indirect Beneficial Ownership |
| Performance rights (right to receive)<sup>(1)</sup> | 2026-12-01 | 2030-10-13 | Ordinary Shares | 221708 | $0 | D |  |
| Performance rights (right to receive)<sup>(2)</sup> | 2027-12-01 | 2030-10-13 | Ordinary Shares | 221708 | $0 | D |  |
| Performance rights (right to receive)<sup>(3)</sup> | 2028-12-01 | 2030-10-13 | Ordinary Shares | 221708 | $0 | D |  |

---

### Footnotes:

(1) Granted on October 13, 2025. 221,708 performance rights will vest on December 1, 2026 and the vesting of the remaining 443,416 performance rights is dependent on Mr. Winckels achieving key performance indicators at the applicable vesting date.

(2) Granted on October 13, 2025. 221,708 performance rights will vest on December 1, 2027 and the vesting of the remaining 221,708 performance rights is dependent on Mr. Winckels achieving key performance indicators at the applicable vesting date.

(3) Granted on October 13, 2025. 221,708 performance rights will vest on December 1, 2028 and the vesting is dependent on Mr. Winckels achieving key performance indicators at the applicable vesting date.

**Signature:** Stephan Karel Gerard Winckels  
**Date:** 2026-04-01

### Remarks:

Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.

* If the form is filed by more than one reporting person, see Instruction 4 (b)(v).

** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).

Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.

**Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.**