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Y-mAbs Therapeutics, Inc. – ‘10-K’ for 12/31/23 – ‘EX-31.1’

On:  Thursday, 2/29/24, at 4:15pm ET   ·   For:  12/31/23   ·   Accession #:  1558370-24-2188   ·   File #:  1-38650

Previous ‘10-K’:  ‘10-K’ on 3/30/23 for 12/31/22   ·   Latest ‘10-K’:  This Filing   ·   18 References:   

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  As Of               Filer                 Filing    For·On·As Docs:Size             Issuer                      Filing Agent

 2/29/24  Y-mAbs Therapeutics, Inc.         10-K       12/31/23  101:10M                                    Toppan Merrill Bridge/FA

Annual Report   —   Form 10-K   —   SEA’34

Filing Table of Contents

Document/Exhibit                   Description                      Pages   Size 

 1: 10-K        Annual Report                                       HTML   2.65M 
 2: EX-4.2      Instrument Defining the Rights of Security Holders  HTML     44K 
 3: EX-10.34    Material Contract                                   HTML     77K 
 4: EX-10.46    Material Contract                                   HTML     61K 
 5: EX-21.1     Subsidiaries List                                   HTML     27K 
 6: EX-23       Consent of Expert or Counsel                        HTML     27K 
11: EX-97.1     Clawback Policy re: Recovery of Erroneously         HTML     47K 
                Awarded Compensation                                             
 7: EX-31.1     Certification -- §302 - SOA'02                      HTML     35K 
 8: EX-31.2     Certification -- §302 - SOA'02                      HTML     35K 
 9: EX-32.1     Certification -- §906 - SOA'02                      HTML     30K 
10: EX-32.2     Certification -- §906 - SOA'02                      HTML     30K 
17: R1          Document and Entity Information                     HTML     99K 
18: R2          Consolidated Balance Sheets                         HTML    124K 
19: R3          Consolidated Balance Sheets (Parenthetical)         HTML     45K 
20: R4          Consolidated Statements of Net Loss and             HTML    104K 
                Comprehensive Loss                                               
21: R5          Consolidated Statements of Changes in               HTML     75K 
                Stockholders' Equity                                             
22: R6          Consolidated Statements of Cash Flows               HTML     92K 
23: R7          Organization and Description of Business            HTML     31K 
24: R8          Basis of Presentation                               HTML     34K 
25: R9          Summary of Significant Accounting Policies          HTML    116K 
26: R10         Product Revenue, Net                                HTML     75K 
27: R11         Net Loss Per Share                                  HTML     44K 
28: R12         Inventories                                         HTML     59K 
29: R13         Intangible Assets, Net                              HTML     32K 
30: R14         Accrued Liabilities                                 HTML     47K 
31: R15         License Agreements and Commitments                  HTML    161K 
32: R16         Stockholders' Equity                                HTML     39K 
33: R17         Stock-Based Compensation                            HTML    110K 
34: R18         Income Taxes                                        HTML    131K 
35: R19         Other Benefits                                      HTML     30K 
36: R20         Restructuring Charge                                HTML     32K 
37: R21         Summary of Significant Accounting Policies          HTML    167K 
                (Policies)                                                       
38: R22         Summary of Significant Accounting Policies          HTML     73K 
                (Tables)                                                         
39: R23         Product Revenue, Net (Tables)                       HTML     70K 
40: R24         Net Loss Per Share (Tables)                         HTML     43K 
41: R25         Inventories (Tables)                                HTML     58K 
42: R26         Accrued Liabilities (Tables)                        HTML     47K 
43: R27         License Agreements and Commitments (Tables)         HTML    132K 
44: R28         Stock-Based Compensation (Tables)                   HTML    100K 
45: R29         Income Taxes (Tables)                               HTML    136K 
46: R30         BASIS OF PRESENTATION - Accumulated deficit         HTML     31K 
                (Details)                                                        
47: R31         BASIS OF PRESENTATION - Cash and cash equivalents   HTML     30K 
                (Details)                                                        
48: R32         SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES -        HTML     36K 
                Concentration of Credit Risk (Details)                           
49: R33         SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES -        HTML     29K 
                Inventories (Details)                                            
50: R34         SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Fair   HTML     45K 
                Value Measurements (Details)                                     
51: R35         SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES -        HTML     56K 
                Revenue Recognition - License revenue (Details)                  
52: R36         SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES -        HTML     30K 
                Segment Information (Details)                                    
53: R37         SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES -        HTML     43K 
                Property and Equipment (Details)                                 
54: R38         SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES -        HTML     29K 
                Provision for Income Taxes (Details)                             
55: R39         SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Other  HTML     33K 
                policies (Details)                                               
56: R40         PRODUCT REVENUE NET - Disaggregation (Details)      HTML     46K 
57: R41         PRODUCT REVENUE, NET - Concentrations (Details)     HTML     53K 
58: R42         PRODUCT REVENUE, NET - Receivables, allowances and  HTML     41K 
                accrued liabilities (Details)                                    
59: R43         PRODUCT REVENUE, NET - Reserves for discounts and   HTML     71K 
                allowances (Details)                                             
60: R44         NET LOSS PER SHARE - Basic and diluted (Details)    HTML     55K 
61: R45         NET LOSS PER SHARE - Anti-dilutive securities       HTML     30K 
                (Details)                                                        
62: R46         Inventories (Details)                               HTML     47K 
63: R47         Intangible Assets, Net (Details)                    HTML     58K 
64: R48         Accrued Liabilities (Details)                       HTML     41K 
65: R49         LICENSE AGREEMENTS AND COMMITMENTS - MSK License    HTML     40K 
                Agreement (Details)                                              
66: R50         LICENSE AGREEMENTS AND COMMITMENTS - CD33 License   HTML     38K 
                (Details)                                                        
67: R51         LICENSE AGREEMENTS AND COMMITMENTS - MabVax/MSK     HTML     34K 
                License (Details)                                                
68: R52         LICENSE AGREEMENTS AND COMMITMENTS - SADA License   HTML     45K 
                Agreement (Details)                                              
69: R53         LICENSE AGREEMENTS AND COMMITMENTS - Summary of     HTML     61K 
                Significant Agreements and Commitments (Details)                 
70: R54         LICENSE AGREEMENTS AND COMMITMENTS - Other          HTML     48K 
                agreements (Details)                                             
71: R55         LICENSE AGREEMENTS AND COMMITMENTS - Lease          HTML     51K 
                agreements (Details)                                             
72: R56         LICENSE AGREEMENTS AND COMMITMENTS - Lease costs    HTML     37K 
                (Details)                                                        
73: R57         LICENSE AGREEMENTS AND COMMITMENTS - Lease          HTML     42K 
                maturities (Details)                                             
74: R58         LICENSE AGREEMENTS AND COMMITMENTS - Lease term     HTML     32K 
                and discount rate (Details)                                      
75: R59         LICENSE AGREEMENTS AND COMMITMENTS - Severance      HTML     39K 
                Related Benefits (Details)                                       
76: R60         LICENSE AGREEMENTS AND COMMITMENTS - Legal matters  HTML     36K 
                (Details)                                                        
77: R61         STOCKHOLDERS' EQUITY - Authorized, Common and       HTML     47K 
                Preferred Stock (Details)                                        
78: R62         STOCKHOLDERS' EQUITY - Stock Grant Agreements with  HTML     90K 
                Non-Employees (Details)                                          
79: R63         STOCK-BASED COMPENSATION - 2015 Plan (Details)      HTML     41K 
80: R64         STOCK-BASED COMPENSATION - 2018 Plan (Details)      HTML     64K 
81: R65         STOCK-BASED COMPENSATION - Stock-based              HTML     47K 
                compensation expense - Options (Details)                         
82: R66         STOCK-BASED COMPENSATION - Stock Option Valuation   HTML     36K 
                (Details)                                                        
83: R67         STOCK-BASED COMPENSATION - Stock option activity    HTML     70K 
                (Details)                                                        
84: R68         STOCK-BASED COMPENSATION - Stock option grants      HTML     82K 
                (Details)                                                        
85: R69         STOCK-BASED COMPENSATION - Stock option             HTML     33K 
                unrecognized compensation (Details)                              
86: R70         STOCK-BASED COMPENSATION - Restricted Stock Units   HTML     76K 
                (Details)                                                        
87: R71         INCOME TAXES - Loss before income taxes (Details)   HTML     37K 
88: R72         INCOME TAXES - Current and deferred income taxes    HTML     50K 
                (Details)                                                        
89: R73         INCOME TAXES - Reconciliation of Income Taxes       HTML     58K 
                (Details)                                                        
90: R74         INCOME TAXES - Deferred assets (Liabilities)        HTML     57K 
                (Details)                                                        
91: R75         INCOME TAXES - Net Operating Loss Carryforwards     HTML     39K 
                (Details)                                                        
92: R76         INCOME TAXES - Unrecognized tax benefits (Details)  HTML     34K 
93: R77         Other Benefits (Details)                            HTML     33K 
94: R78         Restructuring Charge (Details)                      HTML     45K 
95: R79         Pay vs Performance Disclosure                       HTML     40K 
96: R80         Insider Trading Arrangements                        HTML     34K 
98: XML         IDEA XML File -- Filing Summary                      XML    175K 
101: XML         XBRL Instance -- ymab-20231231x10k_htm               XML   1.95M  
97: EXCEL       IDEA Workbook of Financial Report Info              XLSX    170K 
13: EX-101.CAL  XBRL Calculations -- ymab-20231231_cal               XML    169K 
14: EX-101.DEF  XBRL Definitions -- ymab-20231231_def                XML    760K 
15: EX-101.LAB  XBRL Labels -- ymab-20231231_lab                     XML   1.46M 
16: EX-101.PRE  XBRL Presentations -- ymab-20231231_pre              XML   1.19M 
12: EX-101.SCH  XBRL Schema -- ymab-20231231                         XSD    223K 
99: JSON        XBRL Instance as JSON Data -- MetaLinks              523±   803K 
100: ZIP         XBRL Zipped Folder -- 0001558370-24-002188-xbrl      Zip    706K  


‘EX-31.1’   —   Certification — §302 – SOA’02


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EXHIBIT 31.1

CERTIFICATION OF CHIEF EXECUTIVE OFFICER
PURSUANT TO SECTION 302 OF THE SARBANES-OXLEY ACT OF 2002

I, Michael Rossi certify that:

1.I have reviewed this Annual Report on Form 10-K of Y-mAbs Therapeutics, Inc.;
2.Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this report;
3.Based on my knowledge, the financial statements, and other financial information included in this report, fairly present in all material respects the financial condition, results of operations and cash flows of the registrant as of, and for, the periods presented in this report;
4.The registrant’s other certifying officer(s) and I are responsible for establishing and maintaining disclosure controls and procedures (as defined in Exchange Act Rules 13a-15(e) and 15d-15(e)) and internal control over financial reporting (as defined in Exchange Act Rules 13a-15(f) and 15d-15(f)) for the registrant and have:
a.Designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be designed under our supervision, to ensure that material information relating to the registrant, including its consolidated subsidiaries, is made known to us by others within those entities, particularly during the period in which this report is being prepared;
b.Designed such internal control over financial reporting, or caused such internal control over financial reporting to be designed under our supervision, to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles;
c.Evaluated the effectiveness of the registrant’s disclosure controls and procedures and presented in this report our conclusions about the effectiveness of the disclosure controls and procedures, as of the end of the period covered by this report based on such evaluation; and
d.Disclosed in this report any change in the registrant’s internal control over financial reporting that occurred during the registrant’s most recent fiscal quarter (the registrant’s fourth fiscal quarter in the case of an annual report) that has materially affected, or is reasonably likely to materially affect, the registrant’s internal control over financial reporting; and
5.The registrant’s other certifying officer(s) and I have disclosed, based on our most recent evaluation of internal control over financial reporting, to the registrant’s auditors and the audit committee of the registrant’s board of directors (or persons performing the equivalent functions):
a.All significant deficiencies and material weaknesses in the design or operation of internal control over financial reporting which are reasonably likely to adversely affect the registrant’s ability to record, process, summarize and report financial information; and
b.Any fraud, whether or not material, that involves management or other employees who have a significant role in the registrant’s internal control over financial reporting.

Date: February 29, 2024

/s/ Michael Rossi

Name: Michael Rossi

Title: President, Chief Executive Officer

(Principal Executive Officer)

1



Dates Referenced Herein   and   Documents Incorporated by Reference

This ‘10-K’ Filing    Date    Other Filings
Filed on:2/29/248-K
For Period end:12/31/23
 List all Filings 


2 Subsequent Filings that Reference this Filing

  As Of               Filer                 Filing    For·On·As Docs:Size             Issuer                      Filing Agent

 5/07/24  Y-mAbs Therapeutics, Inc.         10-Q        3/31/24   86:8.2M                                   Toppan Merrill Bridge/FA
 2/29/24  Y-mAbs Therapeutics, Inc.         S-8         2/29/24    4:185K                                   Toppan Merrill Bridge/FA


16 Previous Filings that this Filing References

  As Of               Filer                 Filing    For·On·As Docs:Size             Issuer                      Filing Agent

11/13/23  Y-mAbs Therapeutics, Inc.         10-Q        9/30/23   82:8.1M                                   Toppan Merrill Bridge/FA
10/18/23  Y-mAbs Therapeutics, Inc.         8-K:5,7,9  10/12/23   13:454K                                   Toppan Merrill/FA
 3/30/23  Y-mAbs Therapeutics, Inc.         10-K       12/31/22  106:10M                                    Toppan Merrill Bridge/FA
11/07/22  Y-mAbs Therapeutics, Inc.         10-Q        9/30/22   88:8.4M                                   Toppan Merrill Bridge/FA
 8/08/22  Y-mAbs Therapeutics, Inc.         10-Q        6/30/22   85:8M                                     Toppan Merrill Bridge/FA
 5/09/22  Y-mAbs Therapeutics, Inc.         10-Q        3/31/22   85:7.2M                                   Toppan Merrill Bridge/FA
 5/06/21  Y-mAbs Therapeutics, Inc.         10-Q        3/31/21   76:6.3M                                   Toppan Merrill Bridge/FA
 2/19/21  Y-mAbs Therapeutics, Inc.         8-K:7,8,9   2/17/21   15:2.7M                                   Toppan Merrill/FA
12/22/20  Y-mAbs Therapeutics, Inc.         8-K:1,9    12/17/20   11:674K                                   Toppan Merrill/FA
11/05/20  Y-mAbs Therapeutics, Inc.         10-Q        9/30/20   68:6.7M                                   Toppan Merrill Bridge/FA
10/08/20  Y-mAbs Therapeutics, Inc.         8-K:1,9    10/07/20   11:294K                                   Toppan Merrill/FA
 4/21/20  Y-mAbs Therapeutics, Inc.         8-K:1,9     4/15/20    2:348K                                   Toppan Merrill/FA
12/19/19  Y-mAbs Therapeutics, Inc.         8-K:1,9    12/13/19    3:170K                                   Toppan Merrill/FA
 9/19/19  Y-mAbs Therapeutics, Inc.         8-K:1,9     9/13/19    2:129K                                   Toppan Merrill/FA
 9/07/18  Y-mAbs Therapeutics, Inc.         S-1/A                  5:4.4M                                   Toppan Merrill-FA
 8/24/18  Y-mAbs Therapeutics, Inc.         S-1                   31:12M                                    Toppan Merrill-FA
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Filing Submission 0001558370-24-002188   –   Alternative Formats (Word / Rich Text, HTML, Plain Text, et al.)

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