# EDGAR Filing Document

**Accession Number:** 0001071438
**File Stem:** 0001292814-26-000873
**Filing Date:** 2026-3
**Character Count:** 5591
**Document Hash:** 2ccc2ba40d5490e048552590a76ec32f
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0001292814-26-000873.hdr.sgml**: 20260313

**ACCESSION NUMBER**: 0001292814-26-000873

**CONFORMED SUBMISSION TYPE**: 3

**PUBLIC DOCUMENT COUNT**: 1

**CONFORMED PERIOD OF REPORT**: 20260313

**FILED AS OF DATE**: 20260313

**DATE AS OF CHANGE**: 20260313

**REPORTING-OWNER**: 

**OWNER DATA:**
- **COMPANY CONFORMED NAME:** Lanna Lepecki Stefan
- **CENTRAL INDEX KEY:** 0002117777

**ORGANIZATION NAME:**

**FILING VALUES:**
- **FORM TYPE:** 3
- **SEC ACT:** 1934 Act
- **SEC FILE NUMBER:** 001-14862
- **FILM NUMBER:** 26754014

**MAIL ADDRESS:**
- **ADDRESS IS A NON US LOCATION:** YES
- **STREET 1:** RUA LEMOS MONTEIRO,120,FLOOR 23,BUTANTA
- **CITY:** SAO PAULO
- **NON US STATE TERRITORY:** SAO PAULO
- **PROVINCE COUNTRY:** D5
- **ZIP:** 05501050
**ISSUER**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** BRASKEM SA
- **CENTRAL INDEX KEY:** 0001071438
- **STANDARD INDUSTRIAL CLASSIFICATION:** INDUSTRIAL ORGANIC CHEMICALS [2860]
- **ORGANIZATION NAME:** 08 Industrial Applications and Services
- **EIN:** 000000000
- **FISCAL YEAR END:** 1231

**BUSINESS ADDRESS:**
- **ADDRESS IS A NON US LOCATION:** YES
- **STREET 1:** RUA ETENO NO 1561
- **CITY:** CAMACARI BAHIA BRAZI
- **NON US STATE TERRITORY:** BAHIA
- **PROVINCE COUNTRY:** D5
- **ZIP:** 00000000
- **BUSINESS PHONE:** 011551134439744

**MAIL ADDRESS:**
- **ADDRESS IS A NON US LOCATION:** YES
- **STREET 1:** RUA ETENO NO 1561
- **CITY:** CAMACARI BAHIA BRAZI
- **NON US STATE TERRITORY:** BAHIA
- **PROVINCE COUNTRY:** D5
- **ZIP:** 00000000

**FORMER COMPANY:**
- **FORMER CONFORMED NAME:** COPENE PETROQUIMICA DO NORDESTE SA
- **DATE OF NAME CHANGE:** 20000428

### 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>Lanna Lepecki Stefan<br><sub>(Last) (First) (Middle)</sub><br>RUA LEMOS MONTEIRO,120,FLOOR 23,BUTANTA<br><sub>(Street)</sub><br>SAO PAULO, D5 05501050<br><sub>(City) (State) (Zip)</sub> | **3. Issuer Name and Ticker or Trading Symbol**<br>BRASKEM SA [ BAK ] | **5. If Amendment, Date of Original Filed (Month/Day/Year)**<br>  |
| **2. Date of Event Requiring Statement (Month/Day/Year)**<br>2026-03-13 | **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>_Executive Officer&Head of SAM_ | **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 |
| Class A Preferred Shares | 62640 | D |  |
| American Depositary Receipt | 39963 | 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 |
| Class A Preferred Share Units | <sup>(1)</sup> | <sup>(1)</sup> | Class A Preferred Shares | 34028 | <sup>(4)</sup> | D |  |
| Class A Preferred Share Units | <sup>(2)</sup> | <sup>(2)</sup> | Class A Preferred Shares | 59774 | <sup>(4)</sup> | D |  |
| Class A Preferred Share Units | <sup>(3)</sup> | <sup>(3)</sup> | Class A Preferred Shares | 114072 | <sup>(4)</sup> | D |  |

---

### Footnotes:

(1) These Class A Preferred Share Units vest on September 06, 2026, subject to certain other conditions set forth in the agreement.

(2) These Class A Preferred Share Units vest on June 05, 2027, subject to certain other conditions set forth in the agreement.

(3) These Class A Preferred Share Units vest on June 16, 2028, subject to certain other conditions set forth in the agreement.

(4) Each Class A Preferred Share Unit represents a contingent right to receive one Class A Preferred Share. The units will be settled in either Class A Preferred Shares or cash (or a combination thereof) at the discretion of the Issuer.

**Signature:** Stefan Lanna Lepecki  
**Date:** 2026-03-13

### 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.**