Company: HQL
Filing Date: 2025-06-09
Form Type: N-CSRS
Source: 0001104659-25-057746
Chunk: 0

Company: abrdn Life Sciences Investors
Filing Date: 2025-06-09
Form: N-CSRS
Chunk 0
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UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM N-CSR CERTIFIED SHAREHOLDER REPORT OF REGISTERED MANAGEMENT INVESTMENT COMPANIES

| Investment                             
 Company Act file number:               |     | 811-06565                     |
| Exact name of registrant as            
 specified in charter:                  |     | abrdn Life Sciences Investors |
| Address                                
 of principal executive offices:        |     | 1900 Market Street, Suite 200 |
|                                        |     | Philadelphia, PA 19103        |
| Name and address of agent for          
 service:                               |     | Sharon Ferrari                |
|                                        |     | abrdn Inc.                    |
|                                        |     | 1900 Market Street Suite 200  |
|                                        |     | Philadelphia, PA 19103        |
| Registrant’s                           
 telephone number, including area code: |     | 1-800-522-5465                |
| Date                                   
 of fiscal year end:                    |     | September 30                  |
| Date                                   
 of reporting period:                   |     | March 31, 2025                |

Item 1. Reports to Stockholders.

(a) A copy of the report transmitted
to shareholders pursuant to Rule 30e-1 under the Investment Company Act of 1940 (the “1940 Act”) is filed herewith.

#### abrdn Life Sciences Investors (HQL)

#### Semi-Annual Report
March 31, 2025

#### aberdeeninvestments.com

#### Managed Distribution Policy(unaudited)
The Board of Trustees (the "Board") of the abrdn Life Sciences Investors(the “Fund”) has authorized a managed distribution policy (“MDP”) of paying quarterly distributions at an annual rate, set once a year, that is a percentage of the rolling average of the Fund’s net asset values over the preceding three month period ending on the last day of the month immediately preceding the distribution’s declaration date (the "Distribution Policy"). The Distribution Policy is subject to regular review by the Board. The Distribution Policy seeks to provide investors with a distribution out of current income, supplemented by realized capital gains and, to the extent necessary, paid-in capital.

With each distribution, the Fund will issue
a notice to shareholders and an accompanying press release which will provide detailed information regarding the estimated amount and composition of the distribution and other information required by the Fund’s
MDP exemptive order. The Board may amend or terminate the