# EDGAR Filing Document

**Accession Number:** 0001224981
**File Stem:** 0001493152-26-011205
**Filing Date:** 2026-3
**Character Count:** 5742
**Document Hash:** e3b37dfdc1fd815da5b7f94a90f0bfd6
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0001493152-26-011205.hdr.sgml**: 20260318

**ACCESSION NUMBER**: 0001493152-26-011205

**CONFORMED SUBMISSION TYPE**: 3

**PUBLIC DOCUMENT COUNT**: 1

**CONFORMED PERIOD OF REPORT**: 20260318

**FILED AS OF DATE**: 20260318

**DATE AS OF CHANGE**: 20260318

**REPORTING-OWNER**: 

**OWNER DATA:**
- **COMPANY CONFORMED NAME:** SLANSKY RICHARD B
- **CENTRAL INDEX KEY:** 0001224981

**ORGANIZATION NAME:**

**FILING VALUES:**
- **FORM TYPE:** 3
- **SEC ACT:** 1934 Act
- **SEC FILE NUMBER:** 001-41115
- **FILM NUMBER:** 26768906

**MAIL ADDRESS:**
- **STREET 1:** 5820 NANCY RIDGE DRIVE
- **CITY:** SAN DIEGO
- **STATE:** CA
- **ZIP:** 92121
**ISSUER**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** Genenta Science S.p.A.
- **CENTRAL INDEX KEY:** 0001838716
- **STANDARD INDUSTRIAL CLASSIFICATION:** BIOLOGICAL PRODUCTS (NO DIAGNOSTIC SUBSTANCES) [2836]
- **ORGANIZATION NAME:** 03 Life Sciences
- **EIN:** 000000000
- **STATE OF INCORPORATION:** L6

**BUSINESS ADDRESS:**
- **STREET 1:** OLGETTINA, NO. 58
- **CITY:** MILAN
- **STATE:** L6
- **ZIP:** 20132
- **BUSINESS PHONE:** 39-02-2643-6639

**MAIL ADDRESS:**
- **STREET 1:** OLGETTINA, NO. 58
- **CITY:** MILAN
- **STATE:** L6
- **ZIP:** 20132

**FORMER COMPANY:**
- **FORMER CONFORMED NAME:** Genenta Science S.r.l.
- **DATE OF NAME CHANGE:** 20210104

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

## FORM 3

### INITIAL STATEMENT OF BENEFICIAL OWNERSHIP OF SECURITIES

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

---

| | | |
|:---|:---|:---|
| **1. Name and Address of Reporting Person**<sup>*</sup><br>SLANSKY RICHARD B<br><sub>(Last) (First) (Middle)</sub><br>13973 CARRIAGE ROAD<br><sub>(Street)</sub><br>POWAY,, CA 92064<br><sub>(City) (State) (Zip)</sub> | **3. Issuer Name and Ticker or Trading Symbol**<br>Genenta Science S.p.A. [ GNTA ] | **5. If Amendment, Date of Original Filed (Month/Day/Year)**<br>  |
| **2. Date of Event Requiring Statement (Month/Day/Year)**<br>2026-03-18 | **4. Relationship of Reporting Person(s) to Issuer**<br>(Check all applicable)<br>[ ] Director   [ ] 10% Owner<br>[X] Officer (give title below)   [ ] Other (specify below)<br>_Chief Financial Officer_ | **6. Individual or Joint/Group Filing (Check Applicable Line)**<br>[X] Form filed by One Reporting Person<br>[ ] Form filed by More than One Reporting Person |

---

## Table I - Non-Derivative Securities Beneficially Owned

---

|  |  |  |  |
| --- | --- | --- | --- |
| 1. Title of Security | 2. Amount of Securities Beneficially Owned | 3. Ownership Form | 4. Nature of Indirect Beneficial Ownership |
| Ordinary Shares | 19947 | D |  |
| American Depositary Shares ("ADSs")<sup>(1)</sup> | 2200 | D |  |

---

## Table II - Derivative Securities Beneficially Owned

---

|  |  |  |  |  |  |  |  |
| --- | --- | --- | --- | --- | --- | --- | --- |
| 1. Title of Derivative Security | 2. Date Exercisable and Expiration Date (Month/Day/Year) | 2. Date Exercisable and Expiration Date (Month/Day/Year) | 3. Title and Amount of Underlying Securities | 3. Title and Amount of Underlying Securities | 4. Conversion or Exercise Price | 5. Ownership Form | 6. Nature of Indirect Beneficial Ownership |
| 1. Title of Derivative Security | Date Exercisable | Expiration Date | Title | Amount or Number of Shares | 4. Conversion or Exercise Price | 5. Ownership Form | 6. Nature of Indirect Beneficial Ownership |
| Stock Option (right to buy) | 2022-07-21<sup>(2)</sup> | 2032-07-21 | ADSs | 127520 | $4.76 | D |  |
| Stock Option (right to buy) | 2024-07-01<sup>(3)</sup> | 2034-07-01 | ADSs | 100000 | $3.08 | D |  |
| Stock Option (right to buy) | 2025-06-04<sup>(4)</sup> | 2035-06-04 | ADSs | 60000 | $4.36 | D |  |
| Stock Option (right to buy) | 2025-06-04<sup>(5)</sup> | 2035-06-04 | ADSs | 15338 | $4.36 | D |  |
| Stock Option (right to buy) | 2025-06-04<sup>(6)</sup> | 2035-06-04 | ADSs | 7669 | $4.36 | D |  |
| Stock Option (right to buy) | 2025-12-18<sup>(7)</sup> | 2035-12-18 | ADSs | 120000 | $1.48 | D |  |

---

### Footnotes:

(1) Each American Depositary Share represents one ordinary share, no par value, of the Issuer.

(2) The stock options vest in two parts: options on 22,884 shares vested immediately and became exercisable on July 21, 2022; and options on 104,636 shares vest in equal monthly installments over three-years beginning July 21, 2022.

(3) The options vest in equal monthly installments over three-years beginning July 1, 2024.

(4) The stock options vest in equal monthly installments over three-years beginning June 4, 2025.

(5) The stock options were issued in place of a cash bonus for 2023 and became fully vested and exercisable on June 4, 2025.

(6) The stock options were issued in place of a cash bonus for 2024 and became fully vested and exercisable on June 4, 2025.

(7) The stock options vest in equal monthly installments over three-years beginning December 18, 2025.

**Signature:** /s/ Richard B. Slansky  
**Date:** 2026-03-18

### 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.**