Exhibit 99.1

Rule 2.7, 3.10.3, 3.10.4, 3.10.5

Appendix 3B

New issue announcement,

application for quotation of additional securities

and agreement

Information or documents not available now must be given to ASX as soon as available. Information and documents given to ASX become ASX’s property and may be made public.

Introduced 1/7/96. Origin: Appendix 5. Amended 1/7/98, 1/9/99, 1/7/2000, 30/9/2001, 11/3/2002, 1/1/2003, 24/10/2005.

Name of entity

Immutep Limited (Company)

ABN

90 009 237 889

We (the entity) give ASX the following information.

Part 1 - All issues

You must complete the relevant sections (attach sheets if there is not enough space).

1	+Class of +securities issued or to be issued	Ordinary Shares
2	Number of +securities issued or to be issued (if known) or maximum number which may be issued	300,561,089 Ordinary Shares
3	Principal terms of the +securities (e.g., if options, exercise price and expiry date; if partly paid +securities, the amount outstanding and due dates for payment; if +convertible securities, the conversion price and dates for conversion)	Pari passu with existing Fully Paid Ordinary Shares

4	Do the +securities rank equally in all respects from the date of allotment with an existing +class of quoted +securities? If the additional securities do not rank equally, please state: •  the date from which they do •  the extent to which they participate for the next dividend, (in the case of a trust, distribution) or interest payment •  the extent to which they do not rank equally, other than in relation to the next dividend, distribution or interest payment	Yes
5	Issue price or consideration	$0.021 per share
6	Purpose of the issue (If issued as consideration for the acquisition of assets, clearly identify those assets)	Share issued under the Share Purchase Plan (SPP). The proceeds from the Placement will be used to support Immutep’s ongoing and planned immuno-oncology clinical development programs, its pre-clinical program in autoimmune disease and for general working capital purposes.
6a	Is the entity an +eligible entity that has obtained security holder approval under rule 7.1A? If Yes, complete sections 6b – 6h in relation to the +securities the subject of this Appendix 3B, and comply with section 6i	Yes
6b	The date the security holder resolution under rule 7.1A was passed	17 November 2017
6c	Number of +securities issued without security holder approval under rule 7.1	Nil

Immutep Limited, Level 12, 95 Pitt St, Sydney NSW 2000

Phone: +61 2 8315 7003 Fax: +61 2 8569 1880

ABN: 90 009 237 889

6d	Number of +securities issued with security holder approval under rule 7.1A	Nil
6e	Number of +securities issued with security holder approval under rule 7.3, or another specific security holder approval (specify date of meeting)	Nil
6f	Number of +securities issued under an exception in rule 7.2	300,561,089 Fully Paid Ordinary Shares
6g	If +securities issued under rule 7.1A, was issue price at least 75% of 15 day VWAP as calculated under rule 7.1A.3? Include the +issue date and both values. Include the source of the VWAP calculation.	Not applicable
6h	If +securities were issued under rule 7.1A for non-cash consideration, state date on which valuation of consideration was released to ASX Market Announcements	Not applicable
6i	Calculate the entity’s remaining issue capacity under rule 7.1 and rule 7.1A – complete Annexure 1 and release to ASX Market Announcements	Refer Annexure 1
7	+Issue dates Note: The issue date may be prescribed by ASX (refer to the definition of issue date in rule 19.12). For example, the issue date for a pro rata entitlement issue must comply with the applicable timetable in Appendix 7A. Cross reference: item 33 of Appendix 3B.	13 April 2018

		Number	+Class
8	Number and +class of all +securities quoted on ASX (including the securities in clause 2 if applicable)	3,026,082,669	Ordinary fully paid shares (ASX: IMM)

Immutep Limited, Level 12, 95 Pitt St, Sydney NSW 2000

Phone: +61 2 8315 7003 Fax: +61 2 8569 1880

ABN: 90 009 237 889

		Number		+Class – Options
9	Number and +class of all	Amount		Exercise Price		Expiration Date
	+securities not quoted on the ASX		1,515,752	$	0.0774	30 June 2018
	(including the securities in clause		165,116	$	0.0774	30 June 2018
	2 if applicable)		147,628,500	$	0.05019	12 December 2018
			371,445,231	$	0.0237	4 August 2020
		793,103		$         0.057		30 October 2020
		1,026,272		$         0.040		7 March 2021
		8,475,995		$         0.025		4 August 2025
		Number		+Class – Warrants over NASDAQ listed American Depository Shares
		Amount		Exercise Price		Terms
			1,973,451	US$	2.50	Each Warrant entitles the holder to purchase 1 ADS (where one ADS = 100 Ordinary Shares) at the exercise price and is exercisable immediately. Each Warrant will expire 5 January 2023
		Number		+Class – Performance Rights
		Amount		Type		Expiration Date
			3,900,000		STI	30 November 2018
			16,731,373		LTI	30 October 2018
			8,209,101		NED PRs	Each tranche of NED PRs will expire one year after Vesting Date if not exercised as indicated in the appendix 3B released on 6 December 2016.
			13,272,356		NED PRs	Each tranche of NED PRs will expire one year after Vesting Date if not exercised as indicated in this appendix 3B released on 4 December 2017
			73,333,333		LTI	Each tranche of LTIs will expire one year after Vesting Date if not exercised as indicated in this appendix 3B released on 4 December 2017
			15,000,000		LTI	Each tranche of LTIs will expire one year after Vesting Date if not exercised as indicated in this appendix 3B released on 4 December 2017
		Number		+Class – Convertible Notes
		Amount		Type		Expiration Date
			13,750,828		Convertible     Notes each with a face value of AU$1, expiring on 4 August 2025

Immutep Limited, Level 12, 95 Pitt St, Sydney NSW 2000

Phone: +61 2 8315 7003 Fax: +61 2 8569 1880

ABN: 90 009 237 889

10 Dividend policy (in the case of a trust, distribution policy) on the increased capital (interests) Unchanged

Part 2 - Bonus issue or pro rata issue

11	Is security holder approval required?	Not applicable
12	Is the issue renounceable or non-renounceable?	Not applicable
13	Ratio in which the +securities will be offered	Not applicable
14	+Class of +securities to which the offer relates	Not applicable
15	+Record date to determine entitlements	Not applicable
16	Will holdings on different registers (or subregisters) be aggregated for calculating entitlements?	Not applicable
17	Policy for deciding entitlements in relation to fractions	Not applicable
18	Names of countries in which the entity has +security holders who will not be sent new issue documents Note: Security holders must be told how their entitlements are to be dealt with. Cross reference: rule 7.7.	Not applicable
19	Closing date for receipt of acceptances or renunciations	Not applicable
20	Names of any underwriters	Not applicable

Immutep Limited, Level 12, 95 Pitt St, Sydney NSW 2000

Phone: +61 2 8315 7003 Fax: +61 2 8569 1880

ABN: 90 009 237 889

21	Amount of any underwriting fee or commission	Not applicable
22	Names of any brokers to the issue	Not applicable
23	Fee or commission payable to the broker to the issue	Not applicable
24	Amount of any handling fee payable to brokers who lodge acceptances or renunciations on behalf of +security holders	Not applicable
25	If the issue is contingent on +security holders’ approval, the date of the meeting	Not applicable
26	Date entitlement and acceptance form and prospectus or Product Disclosure Statement will be sent to persons entitled	Not applicable
27	If the entity has issued options, and the terms entitle option holders to participate on exercise, the date on which notices will be sent to option holders	Not applicable
28	Date rights trading will begin (if applicable)	Not applicable
29	Date rights trading will end (if applicable)	Not applicable
30	How do +security holders sell their entitlements in full through a broker?	Not applicable
31	How do +security holders sell part of their entitlements through a broker and accept for the balance?	Not applicable

Immutep Limited, Level 12, 95 Pitt St, Sydney NSW 2000

Phone: +61 2 8315 7003 Fax: +61 2 8569 1880

ABN: 90 009 237 889

32	How do +security holders dispose of their entitlements (except by sale through a broker)?	Not applicable
33	+Despatch date	Not applicable

Part 3 - Quotation of securities

You need only complete this section if you are applying for quotation of securities

34	Type of securities (tick one)
(a)	☒	Securities described in Part 1
(b)	☐	All other securities Example: restricted securities at the end of the escrowed period, partly paid securities that become fully paid, employee incentive share securities when restriction ends, securities issued on expiry or conversion of convertible securities

Entities that have ticked box 34(a)

Additional securities forming a new class of securities

Tick to indicate you are providing the information or documents

35	☐	If the +securities are +equity securities, the names of the 20 largest holders of the additional +securities, and the number and percentage of additional +securities held by those holders
36	☐	If the +securities are +equity securities, a distribution schedule of the additional +securities setting out the number of holders in the categories 1 - 1,000 1,001 - 5,000 5,001 - 10,000 10,001 - 100,000 100,001 and over
37	☐	A copy of any trust deed for the additional +securities

Immutep Limited, Level 12, 95 Pitt St, Sydney NSW 2000

Phone: +61 2 8315 7003 Fax: +61 2 8569 1880

ABN: 90 009 237 889

Entities that have ticked box 34(b)

38	Number of securities for which +quotation is sought	Not applicable
39	Class of +securities for which quotation is sought	Not applicable
40	Do the +securities rank equally in all respects from the date of allotment with an existing +class of quoted +securities? If the additional securities do not rank equally, please state: •  the date from which they do •  the extent to which they participate for the next dividend, (in the case of a trust, distribution) or interest payment •  the extent to which they do not rank equally, other than in relation to the next dividend, distribution or interest payment	Not applicable
41	Reason for request for quotation now Example: In the case of restricted securities, end of restriction period (if issued upon conversion of another security, clearly identify that other security)	Not applicable
		Number	+Class
42	Number and +class of all +securities quoted on ASX (including the securities in clause 38)	Not applicable

Immutep Limited, Level 12, 95 Pitt St, Sydney NSW 2000

Phone: +61 2 8315 7003 Fax: +61 2 8569 1880

ABN: 90 009 237 889

Quotation agreement

1 ⁺Quotation of our additional ⁺securities is in ASX’s absolute discretion. ASX may quote the ⁺securities on any conditions it decides.

2 We warrant the following to ASX.

• The issue of the ⁺securities to be quoted complies with the law and is not for an illegal purpose.

• There is no reason why those ⁺securities should not be granted ⁺quotation.

• An offer of the ⁺securities for sale within 12 months after their issue will not require disclosure under section 707(3) or section 1012C(6) of the Corporations Act.

Note: An entity may need to obtain appropriate warranties from subscribers for the securities in order to be able to give this warranty

• Section 724 or section 1016E of the Corporations Act does not apply to any applications received by us in relation to any +securities to be quoted and that no-one has any right to return any +securities to be quoted under sections 737, 738 or 1016F of the Corporations Act at the time that we request that the +securities be quoted.

• If we are a trust, we warrant that no person has the right to return the +securities to be quoted under section 1019B of the Corporations Act at the time that we request that the +securities be quoted.

3 We will indemnify ASX to the fullest extent permitted by law in respect of any claim, action or expense arising from or connected with any breach of the warranties in this agreement.

4 We give ASX the information and documents required by this form. If any information or document not available now, will give it to ASX before ⁺quotation of the ⁺securities begins. We acknowledge that ASX is relying on the information and documents. We warrant that they are (will be) true and complete.

Sign here:		Date: 13 April 2018
	Company secretary

Print name: Tom Bloomfield

Immutep Limited, Level 12, 95 Pitt St, Sydney NSW 2000

Phone: +61 2 8315 7003 Fax: +61 2 8569 1880

ABN: 90 009 237 889

Appendix 3B – Annexure 1

Calculation of placement capacity under

rule 7.1 and rule 7.1A for eligible entities

Introduced 01/08/12 Amended 04/03/13

Part 1

Rule 7.1 – Issues exceeding 15% of capital
Step 1: Calculate “A”, the base figure from which the placement capacity is calculated
Insert number of fully paid +ordinary securities on issue 12 months before the +issue date or date of agreement to issue	2,079,742,938
Add the following: •  Number of fully paid +ordinary securities issued in that 12 month period under an exception in rule 7.2 •  Number of fully paid +ordinary securities issued in that 12 month period with shareholder approval •  Number of partly paid +ordinary securities that became fully paid in that 12 month period Note: •  Include only ordinary securities here – other classes of equity securities cannot be added •  Include here (if applicable) the securities the subject of the Appendix 3B to which this form is annexed •  It may be useful to set out issues of securities on different dates as separate line items	620,147,350
Subtract the number of fully paid +ordinary securities cancelled during that 12 month period	Nil
“A”	2,699,890,288

Immutep Limited, Level 12, 95 Pitt St, Sydney NSW 2000

Phone: +61 2 8315 7003 Fax: +61 2 8569 1880

ABN: 90 009 237 889

Step 2: Calculate 15% of “A”
“B”	0.15 [Note: this value cannot be changed]
Multiply “A” by 0.15	404,983,543
Step 3: Calculate “C”, the amount of placement capacity under rule 7.1 that has already been used
Insert number of +equity securities issued or agreed to be issued in that 12 month period not counting those issued: •  Under an exception in rule 7.2 •  Under rule 7.1A •  With security holder approval under rule 7.1 or rule 7.4 Note: •  This applies to equity securities, unless specifically excluded – not just ordinary securities •  Include here (if applicable) the securities the subject of the Appendix 3B to which this form is annexed •  It may be useful to set out issues of securities on different dates as separate line items	86,259,462
“C”	86,259,462
Step 4: Subtract “C” from [“A” x “B”] to calculate remaining placement capacity under rule 7.1
“A” x 0.15 Note: number must be same as shown in Step 2	404,983,543
Subtract “C” Note: number must be same as shown in Step 3	86,259,462
Total [“A” x 0.15] – “C”	318,724,081 Note: this is the remaining placement capacity under rule 7.1

Immutep Limited, Level 12, 95 Pitt St, Sydney NSW 2000

Phone: +61 2 8315 7003 Fax: +61 2 8569 1880

ABN: 90 009 237 889

Part 2

Rule 7.1A – Additional placement capacity for eligible entities
Step 1: Calculate “A”, the base figure from which the placement capacity is calculated
“A” Note: number must be same as shown in Step 1 of Part 1	2,699,890,288
Step 2: Calculate 10% of “A”
“D”	0.10 Note: this value cannot be changed
Multiply “A” by 0.10	269,989,028
Step 3: Calculate “E”, the amount of placement capacity under rule 7.1A that has already been used
Insert number of +equity securities issued or agreed to be issued in that 12 month period under rule 7.1A Notes: •  This applies to equity securities – not just ordinary securities •  Include here – if applicable – the securities the subject of the Appendix 3B to which this form is annexed •  Do not include equity securities issued under rule 7.1 (they must be dealt with in Part 1), or for which specific security holder approval has been obtained •  It may be useful to set out issues of securities on different dates as separate line items	239,932,919
“E”	239,932,919

Immutep Limited, Level 12, 95 Pitt St, Sydney NSW 2000

Phone: +61 2 8315 7003 Fax: +61 2 8569 1880

ABN: 90 009 237 889

Step 4: Subtract “E” from [“A” x “D”] to calculate remaining placement capacity under rule 7.1A
“A” x 0.10 Note: number must be same as shown in Step 2	269,989,028
Subtract “E” Note: number must be same as shown in Step 3	239,932,919
Total [“A” x 0.10] – “E”	30,056,109 Note: this is the remaining placement capacity under rule 7.1A

Immutep Limited, Level 12, 95 Pitt St, Sydney NSW 2000

Phone: +61 2 8315 7003 Fax: +61 2 8569 1880

ABN: 90 009 237 889