Company: IFCNF
Filing Date: 2025-04-23
Form Type: F-6 POS
Source: 0001193805-25-000546
Chunk: 0

Company: Inficon Holding AG/ADR
Filing Date: 2025-04-23
Form: F-6 POS
Chunk 0
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| As filed with the                                     
 Securities and Exchange Commission on April 23, 2025. | Registration No. 333-281790 |

<div align='center'>SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM F-6/A

POST-EFFECTIVE AMENDMENT NO. 1 TO

REGISTRATION STATEMENT

UNDER

THE SECURITIES ACT OF 1933 FOR DEPOSITARY SHARES EVIDENCED BY

AMERICAN DEPOSITARY RECEIPTS

_____________

Inficon Holding AG

(Exact name of issuer of deposited securities
as specified in its charter)

N/A

(Translation of issuer's name in English)

Switzerland

(Jurisdiction of incorporation or organization
of issuer)

CITIBANK, N.A.

(Exact name of depositary as specified in
its charter)

388 Greenwich Street

New York, New York 10013

(877) 248-4237

(Address, including zip code, and telephone number, including area code, of depositary's principal executive offices)

CITIBANK, N.A. – DEPOSITARY RECEIPTS
DEPARTMENT

388 Greenwich Street

New York, New York 10013

(212) 723-5435

(Name, address, including zip code, and telephone number, including area code of agent for service)</div>

| It is proposed that this filing become effective under Rule 466 | ☒ | immediately upon filing. |
|                                                                 | ☐ | on (Date) at (Time).     |

If a separate registration statement has been filed to register the deposited shares, check the following box: ☐

<div align='center'>CALCULATION OF REGISTRATION FEE</div>

| Title of Each Class of                                                                        
 Securities to be Registered                                                                   | Amount to be 
 Registered   | Proposed Maximum         
 Offering Price Per Unit* | Proposed Maximum Aggregate Offering Price** | Amount of        
 Registration Fee |
| American                                                                                      
 Depositary Shares, each American Depositary Share representing the right to receive one-tenth 
 (1/10) of one share of common stock Inficon Holding AG                                        | N/A          | N/A                      | N/A                                         | N/A              |

| * | Each unit represents 100 American Depositary Shares. |

| ** | Estimated solely for the purpose of calculating the registration fee. Pursuant to Rule 457(k), such estimate is computed on the basis 
 of the maximum aggregate fees or charges to be imposed in