# EDGAR Filing Document

**Accession Number:** 0001828422
**File Stem:** 0000921895-23-000615
**Filing Date:** 2023-2
**Character Count:** 12034
**Document Hash:** 515f45e1af6786a1da5d4ffb25791066
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0000921895-23-000615.hdr.sgml**: 20230227

**ACCESSION NUMBER**: 0000921895-23-000615

**CONFORMED SUBMISSION TYPE**: 4

**PUBLIC DOCUMENT COUNT**: 1

**CONFORMED PERIOD OF REPORT**: 20230223

**FILED AS OF DATE**: 20230227

**DATE AS OF CHANGE**: 20230227

**REPORTING-OWNER**: 

**OWNER DATA:**
- **COMPANY CONFORMED NAME:** Presight Sensei Co-Invest Fund, L.P.
- **CENTRAL INDEX KEY:** 0001828422
- **STATE OF INCORPORATION:** DE
- **FISCAL YEAR END:** 1231

**FILING VALUES:**
- **FORM TYPE:** 4
- **SEC ACT:** 1934 Act
- **SEC FILE NUMBER:** 001-39980
- **FILM NUMBER:** 23677746

**BUSINESS ADDRESS:**
- **STREET 1:** 340 S. LEMON AVE., # 3391
- **CITY:** WALNUT
- **STATE:** CA
- **ZIP:** 91789
- **BUSINESS PHONE:** 4156382393

**MAIL ADDRESS:**
- **STREET 1:** 340 S. LEMON AVE., # 3391
- **CITY:** WALNUT
- **STATE:** CA
- **ZIP:** 91789
**REPORTING-OWNER**: 

**OWNER DATA:**
- **COMPANY CONFORMED NAME:** Apeiron Investment Group Ltd.
- **CENTRAL INDEX KEY:** 0001845711
- **STATE OF INCORPORATION:** O1
- **FISCAL YEAR END:** 1231

**FILING VALUES:**
- **FORM TYPE:** 4
- **SEC ACT:** 1934 Act
- **SEC FILE NUMBER:** 001-39980
- **FILM NUMBER:** 23677748

**BUSINESS ADDRESS:**
- **STREET 1:** BLOCK A, APT.12
- **STREET 2:** IL-PIAZZETTA, TOWER ROAD
- **CITY:** SLIEMA
- **STATE:** O1
- **ZIP:** SLM1605
- **BUSINESS PHONE:** 44 7557 251 563

**MAIL ADDRESS:**
- **STREET 1:** BLOCK A, APT.12
- **STREET 2:** IL-PIAZZETTA, TOWER ROAD
- **CITY:** SLIEMA
- **STATE:** O1
- **ZIP:** SLM1605
**REPORTING-OWNER**: 

**OWNER DATA:**
- **COMPANY CONFORMED NAME:** Presight Co-Invest Management, L.L.C.
- **CENTRAL INDEX KEY:** 0001846009
- **STATE OF INCORPORATION:** DE
- **FISCAL YEAR END:** 1231

**FILING VALUES:**
- **FORM TYPE:** 4
- **SEC ACT:** 1934 Act
- **SEC FILE NUMBER:** 001-39980
- **FILM NUMBER:** 23677745

**BUSINESS ADDRESS:**
- **STREET 1:** 340 SOUTH LEMON AVENUE #3391
- **CITY:** WALNUT
- **STATE:** CA
- **ZIP:** 91789
- **BUSINESS PHONE:** (415) 638-2393

**MAIL ADDRESS:**
- **STREET 1:** 340 SOUTH LEMON AVENUE #3391
- **CITY:** WALNUT
- **STATE:** CA
- **ZIP:** 91789
**REPORTING-OWNER**: 

**OWNER DATA:**
- **COMPANY CONFORMED NAME:** Angermayer Christian
- **CENTRAL INDEX KEY:** 0001845872

**FILING VALUES:**
- **FORM TYPE:** 4
- **SEC ACT:** 1934 Act
- **SEC FILE NUMBER:** 001-39980
- **FILM NUMBER:** 23677747

**MAIL ADDRESS:**
- **STREET 1:** BLOCK A, APT.12
- **STREET 2:** IL-PIAZZETTA, TOWER ROAD
- **CITY:** SLIEMA
- **STATE:** O1
- **ZIP:** SLM1605
**ISSUER**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** Sensei Biotherapeutics, Inc.
- **CENTRAL INDEX KEY:** 0001829802
- **STANDARD INDUSTRIAL CLASSIFICATION:** PHARMACEUTICAL PREPARATIONS [2834]
- **IRS NUMBER:** 000000000
- **STATE OF INCORPORATION:** DE
- **FISCAL YEAR END:** 1231

**BUSINESS ADDRESS:**
- **STREET 1:** 620 PROFESSIONAL DRIVE
- **CITY:** GAITHERSBURG
- **STATE:** MD
- **ZIP:** 20879
- **BUSINESS PHONE:** (240) 243-8000

**MAIL ADDRESS:**
- **STREET 1:** 620 PROFESSIONAL DRIVE
- **CITY:** GAITHERSBURG
- **STATE:** MD
- **ZIP:** 20879

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

## FORM 4

### STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

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

[ ] Check this box to indicate that a transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). See Instruction 10.

---

| | | |
|:---|:---|:---|
| **1. Name and Address of Reporting Person**<sup>*</sup><br>Apeiron Investment Group Ltd.<br><sub>(Last) (First) (Middle)</sub><br>BEATRICE, AT 66 & 67 AMERY STREET<br><sub>(Street)</sub><br>SLIEMA, O1 SLM1707<br><sub>(City) (State) (Zip)</sub> | **3. Date of Earliest Transaction (Month/Day/Year)**<br>2023-02-23 | **5. Relationship of Reporting Person(s) to Issuer**<br>(Check all applicable)<br>[ ] Director [X] 10% Owner<br>[ ] Officer (give title below) [ ] Other (specify below)<br>_ _ |
| **2. Issuer Name and Ticker or Trading Symbol**<br>Sensei Biotherapeutics, Inc. [ SNSE ] | **4. If Amendment, Date of Original Filed (Month/Day/Year)**<br>  | **6. Individual or Joint/Group Filing (Check Applicable Line)**<br>[ ] Form filed by One Reporting Person<br>[X] Form filed by More than One Reporting Person |

---

---

| | | |
|:---|:---|:---|
| **1. Name and Address of Reporting Person**<sup>*</sup><br>Angermayer Christian<br><sub>(Last) (First) (Middle)</sub><br>BEATRICE, AT 66 & 67 AMERY STREET<br><sub>(Street)</sub><br>SLIEMA, O1 SLM1707<br><sub>(City) (State) (Zip)</sub> | **3. Date of Earliest Transaction (Month/Day/Year)**<br>2023-02-23 | **5. Relationship of Reporting Person(s) to Issuer**<br>(Check all applicable)<br>[ ] Director [X] 10% Owner<br>[ ] Officer (give title below) [ ] Other (specify below)<br>_ _ |
| **2. Issuer Name and Ticker or Trading Symbol**<br>Sensei Biotherapeutics, Inc. [ SNSE ] | **4. If Amendment, Date of Original Filed (Month/Day/Year)**<br>  | **6. Individual or Joint/Group Filing (Check Applicable Line)**<br>[ ] Form filed by One Reporting Person<br>[X] Form filed by More than One Reporting Person |

---

---

| | | |
|:---|:---|:---|
| **1. Name and Address of Reporting Person**<sup>*</sup><br>Presight Sensei Co-Invest Fund, L.P.<br><sub>(Last) (First) (Middle)</sub><br>340 S. LEMON AVE., # 3391<br><sub>(Street)</sub><br>WALNUT, CA 91789<br><sub>(City) (State) (Zip)</sub> | **3. Date of Earliest Transaction (Month/Day/Year)**<br>2023-02-23 | **5. Relationship of Reporting Person(s) to Issuer**<br>(Check all applicable)<br>[ ] Director [ ] 10% Owner<br>[ ] Officer (give title below) [X] Other (specify below)<br>_See Explanation of Responses_ |
| **2. Issuer Name and Ticker or Trading Symbol**<br>Sensei Biotherapeutics, Inc. [ SNSE ] | **4. If Amendment, Date of Original Filed (Month/Day/Year)**<br>  | **6. Individual or Joint/Group Filing (Check Applicable Line)**<br>[ ] Form filed by One Reporting Person<br>[X] Form filed by More than One Reporting Person |

---

---

| | | |
|:---|:---|:---|
| **1. Name and Address of Reporting Person**<sup>*</sup><br>Presight Co-Invest Management, L.L.C.<br><sub>(Last) (First) (Middle)</sub><br>340 S. LEMON AVE. #3391<br><sub>(Street)</sub><br>WALNUT, CA 91789<br><sub>(City) (State) (Zip)</sub> | **3. Date of Earliest Transaction (Month/Day/Year)**<br>2023-02-23 | **5. Relationship of Reporting Person(s) to Issuer**<br>(Check all applicable)<br>[ ] Director [ ] 10% Owner<br>[ ] Officer (give title below) [X] Other (specify below)<br>_See Explanation of Responses_ |
| **2. Issuer Name and Ticker or Trading Symbol**<br>Sensei Biotherapeutics, Inc. [ SNSE ] | **4. If Amendment, Date of Original Filed (Month/Day/Year)**<br>  | **6. Individual or Joint/Group Filing (Check Applicable Line)**<br>[ ] Form filed by One Reporting Person<br>[X] Form filed by More than One Reporting Person |

---

## Table I - Non-Derivative Securities

---

|  |  |  |  |  |  |  |  |  |  |  |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1. Title of Security | 2. Transaction Date | 2A. Deemed Execution Date | 3. Transaction Code (V) | 3. Transaction Code (V) | 4. Securities Acquired (A) or Disposed of (D) | 4. Securities Acquired (A) or Disposed of (D) | 4. Securities Acquired (A) or Disposed of (D) | 5. Amount of Securities Beneficially Owned | 6. Ownership Form | 7. Nature of Indirect Beneficial Ownership |
| 1. Title of Security | 2. Transaction Date | 2A. Deemed Execution Date | Code | V | Amount | (A) or (D) | Price | 5. Amount of Securities Beneficially Owned | 6. Ownership Form | 7. Nature of Indirect Beneficial Ownership |
| Common Stock<sup>(1)</sup> | 2023-02-23 |  | P |  | 1100 | A | $1.6150 | 2484823 | I | By Apeiron Investment Group Ltd.<sup>(2)</sup> |
| Common Stock<sup>(1)</sup> | 2023-02-23 |  | P |  | 1100 | A | $1.6023 | 2485923 | I | By Apeiron Investment Group Ltd.<sup>(2)</sup> |
| Common Stock<sup>(1)</sup> |  |  |  |  |  |  |  | 955738 | I | By Presight Sensei Co-Invest Fund, L.P.<sup>(3)</sup> |

---

## Table II - Derivative Securities

---

|  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1. Title of Derivative Security | 2. Conversion or Exercise Price | 3. Transaction Date | 3A. Deemed Execution Date | 4. Transaction Code (V) | 4. Transaction Code (V) | 5. Number of Derivative Securities Acquired (A) or Disposed of (D) | 5. Number of Derivative Securities Acquired (A) or Disposed of (D) | 6. Date Exercisable and Expiration Date | 6. Date Exercisable and Expiration Date | 7. Title and Amount of Underlying Securities | 7. Title and Amount of Underlying Securities | 8. Price of Derivative Security | 9. Number of Derivative Securities Beneficially Owned | 10. Ownership Form | 11. Nature of Indirect Beneficial Ownership |
| 1. Title of Derivative Security | 2. Conversion or Exercise Price | 3. Transaction Date | 3A. Deemed Execution Date | Code | V | (A) | (D) | Date Exercisable | Expiration Date | Title | Amount or Number of Shares | 8. Price of Derivative Security | 9. Number of Derivative Securities Beneficially Owned | 10. Ownership Form | 11. Nature of Indirect Beneficial Ownership |
|  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |

---

### Footnotes:

(1) This Form 4 is filed jointly by Apeiron Investment Group Ltd. ("Apeiron"), Christian Angermayer, Presight Sensei Co-Invest Fund, L.P. ("Presight Co-Invest") and Presight Sensei Co-Invest Management, L.L.C. ("Presight Co-Invest Management", and collectively, the "Reporting Persons"). Each of the Reporting Persons is a member of a Section 13(d) group that beneficially owns over 10% of the Issuer's outstanding shares of Common Stock. Each of the Reporting Persons disclaims beneficial ownership of the securities reported herein except to the extent of his or its pecuniary interest therein.

(2) Securities owned directly by Apeiron. Mr. Angermayer, as the majority shareholder of Apeiron, may be deemed to beneficially own the securities owned directly by Apeiron.

(3) Securities owned directly by Presight Co-Invest. As the general partner of Presight Co-Invest, Presight Co-Invest Management may be deemed to beneficially own the securities owned directly by Presight Co-Invest. As the sole member of Presight Co-Invest Management, Apeiron may be deemed to beneficially own the securities owned directly by Presight Co-Invest. Mr. Angermayer, as the majority shareholder of Apeiron, may be deemed to beneficially own the securities owned directly by Presight Co-Invest.

**Signature:** Apeiron Investment Group Ltd., By: /s/ Julien Hofer, Director  
**Date:** 2023-02-27

**Signature:** /s/ Christian Angermayer  
**Date:** 2023-02-27

**Signature:** Presight Sensei Co-Invest Fund, L.P., By: Presight Sensei Co-Invest Management, L.L.C. its general partner, By: Apeiron Investment Group Ltd., its sole member, By: /s/ Julien Hofer, Director  
**Date:** 2023-02-27

**Signature:** Presight Sensei Co-Invest Management, L.L.C. By: Apeiron Investment Group Ltd., its sole member, By: /s/ Julien Hofer, Director  
**Date:** 2023-02-27

### 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.**