# EDGAR Filing Document

**Accession Number:** 0001566571
**File Stem:** 0001628280-26-038240
**Filing Date:** 2026-5
**Character Count:** 8410
**Document Hash:** 6f60167cddb1769019d41ad849637375
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0001628280-26-038240.hdr.sgml**: 20260526

**ACCESSION NUMBER**: 0001628280-26-038240

**CONFORMED SUBMISSION TYPE**: 4

**PUBLIC DOCUMENT COUNT**: 1

**CONFORMED PERIOD OF REPORT**: 20260519

**FILED AS OF DATE**: 20260526

**DATE AS OF CHANGE**: 20260526

**REPORTING-OWNER**: 

**OWNER DATA:**
- **COMPANY CONFORMED NAME:** Heidloff Theodore J.
- **CENTRAL INDEX KEY:** 0001566571

**ORGANIZATION NAME:**

**FILING VALUES:**
- **FORM TYPE:** 4
- **SEC ACT:** 1934 Act
- **SEC FILE NUMBER:** 001-43306
- **FILM NUMBER:** 261021268

**MAIL ADDRESS:**
- **STREET 1:** 108 WILMOT ROAD
- **CITY:** DEERFIELD
- **STATE:** IL
- **ZIP:** 60015
**ISSUER**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** Lincoln International, Inc.
- **CENTRAL INDEX KEY:** 0001925283
- **STANDARD INDUSTRIAL CLASSIFICATION:** INVESTMENT ADVICE [6282]
- **ORGANIZATION NAME:** 02 Finance
- **EIN:** 000000000
- **STATE OF INCORPORATION:** DE
- **FISCAL YEAR END:** 1231

**BUSINESS ADDRESS:**
- **STREET 1:** 110 NORTH WACKER DRIVE
- **STREET 2:** 51ST FLOOR
- **CITY:** CHICAGO
- **STATE:** IL
- **ZIP:** 60606
- **BUSINESS PHONE:** 3125808339

**MAIL ADDRESS:**
- **STREET 1:** 110 NORTH WACKER DRIVE
- **STREET 2:** 51ST FLOOR
- **CITY:** CHICAGO
- **STATE:** IL
- **ZIP:** 60606

### 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>Heidloff Theodore J.<br><sub>(Last) (First) (Middle)</sub><br>110 NORTH WACKER DRIVE, 51ST FLOOR<br><sub>(Street)</sub><br>CHICAGO, IL 60606<br><sub>(City) (State) (Zip)</sub> | **3. Date of Earliest Transaction (Month/Day/Year)**<br>2026-05-19 | **5. 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_ |
| **2. Issuer Name and Ticker or Trading Symbol**<br>Lincoln International, Inc. [ LCLN ] | **4. If Amendment, Date of Original Filed (Month/Day/Year)**<br>  | **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

---

|  |  |  |  |  |  |  |  |  |  |  |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 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 |
| Class B Common Stock | 2026-05-19<sup>(1)</sup> |  | A |  | 341250 | A | <sup>(2)</sup> | 341250 | D |  |
| Class A Common Stock | 2026-05-21 |  | A |  | 25000<sup>(3)</sup> | A | $0 | 25000 | D |  |
| Class B Common Stock | 2026-05-21 |  | D |  | 34124 | D | <sup>(4)</sup> | 307126 | D |  |

---

## 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 |
| Common Units | <sup>(5)</sup> | 2026-05-19<sup>(1)</sup> |  | A |  | 341250 |  | <sup>(5)</sup> | <sup>(5)</sup> | Class A Common Stock | 341250 | <sup>(2)</sup> | 341250 | D |  |
| Stock Option | $6.83 | 2026-05-19<sup>(1)</sup> |  | A |  | 8450 |  | <sup>(6)</sup> | 2026-12-31 | Common Units | 8450 | $0 | 8450 | D |  |
| Stock Option | $9.09 | 2026-05-19<sup>(1)</sup> |  | A |  | 8450 |  | <sup>(7)</sup> | 2027-12-31 | Common Units | 8450 | $0 | 8450 | D |  |
| Stock Option | $6.83 | 2026-05-19<sup>(1)</sup> |  | A |  | 7800 |  | <sup>(8)</sup> | 2027-12-31 | Common Units | 7800 | $0 | 7800 | D |  |
| Stock Option | $9.09 | 2026-05-19<sup>(1)</sup> |  | A |  | 8450 |  | <sup>(9)</sup> | 2028-12-31 | Common Units | 8450 | $0 | 8450 | D |  |
| Stock Option | $9.09 | 2026-05-19<sup>(1)</sup> |  | A |  | 7800 |  | <sup>(10)</sup> | 2029-12-31 | Common Units | 7800 | $0 | 7800 | D |  |
| Stock Option | $9.09 | 2026-05-19<sup>(1)</sup> |  | A |  | 7800 |  | <sup>(11)</sup> | 2030-12-31 | Common Units | 7800 | $0 | 7800 | D |  |
| Common Units | <sup>(5)</sup> | 2026-05-21 |  | D |  |  | 34124 | <sup>(5)</sup> | <sup>(5)</sup> | Class A Common Stock | 34124 | $20 | 307126 | D |  |

---

### Footnotes:

(1) This transaction occurred prior to the Issuer's registration of a class of equity securities under Section 12 of the Securities Exchange Act of 1934, as amended, in connection with the Issuer's initial public offering, and is reported herein pursuant to Rule 16a-2(a).

(2) Represents an acquisition of Common Units and a corresponding number of Class B Common Stock pursuant to a reorganization of the Issuer.

(3) Represents an award of restricted stock units ("RSUs'), each of which represents a contingent right to receive one share of Class A Common Stock. The RSUs vest in two substantially equal annual installments on each of the third and fourth anniversaries of May 21, 2026.

(4) Reflects the cancellation for no consideration of Class B Common Stock in connection with the sale of Common Units.

(5) The common units of Lincoln International, LP ("Common Units") may be redeemed by the Reporting Person at any time at the option of the holder for shares of Class A Common Stock on a 1-to-1 basis, and a corresponding number of shares of Class B Common Stock will be forfeited in connection with the redemption. The Common Units have no expiration date.

(6) The stock option is fully vested and exercisable.

(7) The stock option vests in full on January 1, 2027.

(8) The stock option vests in full on April 1, 2027.

(9) The stock option vests in full on January 1, 2028.

(10) The stock option vests in full on January 1, 2029.

(11) The stock option vests in full on January 1, 2030.

**Signature:** /s/ Julie Nelson, Attorney-in-Fact  
**Date:** 2026-05-26

### 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.**