# EDGAR Filing Document

**Accession Number:** 0000859737
**File Stem:** 0000859737-25-000028
**Filing Date:** 2025-9
**Character Count:** 7807
**Document Hash:** 51cb0fa58c7d44cd9d0f453795f7b01d
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0000859737-25-000028.hdr.sgml**: 20250923

**ACCESSION NUMBER**: 0000859737-25-000028

**CONFORMED SUBMISSION TYPE**: 4

**PUBLIC DOCUMENT COUNT**: 1

**CONFORMED PERIOD OF REPORT**: 20250922

**FILED AS OF DATE**: 20250923

**DATE AS OF CHANGE**: 20250923

**REPORTING-OWNER**: 

**OWNER DATA:**
- **COMPANY CONFORMED NAME:** MACMILLAN STEPHEN P
- **CENTRAL INDEX KEY:** 0001239351

**ORGANIZATION NAME:**

**FILING VALUES:**
- **FORM TYPE:** 4
- **SEC ACT:** 1934 Act
- **SEC FILE NUMBER:** 001-36214
- **FILM NUMBER:** 251333734

**MAIL ADDRESS:**
- **STREET 1:** 250 CAMPUS DRIVE
- **CITY:** MARLBOROUGH
- **STATE:** MA
- **ZIP:** 01752
**ISSUER**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** HOLOGIC INC
- **CENTRAL INDEX KEY:** 0000859737
- **STANDARD INDUSTRIAL CLASSIFICATION:** X-RAY APPARATUS & TUBES & RELATED IRRADIATION APPARATUS [3844]
- **ORGANIZATION NAME:** 08 Industrial Applications and Services
- **EIN:** 042902449
- **STATE OF INCORPORATION:** DE
- **FISCAL YEAR END:** 0928

**BUSINESS ADDRESS:**
- **STREET 1:** 250 CAMPUS DRIVE
- **CITY:** MARLBOROUGH
- **STATE:** MA
- **ZIP:** 01752
- **BUSINESS PHONE:** 5082632900

**MAIL ADDRESS:**
- **STREET 1:** 250 CAMPUS DRIVE
- **CITY:** MARLBOROUGH
- **STATE:** MA
- **ZIP:** 01752

### 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).

[x] 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>MACMILLAN STEPHEN P<br><sub>(Last) (First) (Middle)</sub><br>250 CAMPUS DRIVE<br><sub>(Street)</sub><br>MARLBOROUGH, MA 01752<br><sub>(City) (State) (Zip)</sub> | **3. Date of Earliest Transaction (Month/Day/Year)**<br>2025-09-22 | **5. Relationship of Reporting Person(s) to Issuer**<br>(Check all applicable)<br>[X] Director [ ] 10% Owner<br>[X] Officer (give title below) [ ] Other (specify below)<br>_Chairman, President and CEO_ |
| **2. Issuer Name and Ticker or Trading Symbol**<br>HOLOGIC INC [ HOLX ] | **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 |
| Common Stock | 2025-09-22 |  | M |  | 138358<sup>(1)</sup> | A | $39.96 | 1372982<sup>(2)(3)</sup> | D |  |
| Common Stock | 2025-09-22 |  | S |  | 22240<sup>(1)</sup> | D | 66.13<sup>(4)</sup> | 1350742<sup>(2)(3)</sup> | D |  |
| Common Stock | 2025-09-22 |  | S |  | 77418<sup>(1)</sup> | D | 67.04<sup>(5)</sup> | 1273324<sup>(2)(3)</sup> | D |  |
| Common Stock | 2025-09-22 |  | S |  | 38700<sup>(1)</sup> | D | 67.32<sup>(6)</sup> | 1234624<sup>(2)(3)</sup> | D |  |
| Common Stock |  |  |  |  |  |  |  | 1146829 | I | MacMillan Family Trust |

---

## 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 |
| Non-qualified Stock Option (Right to Buy) | $39.96 | 2025-09-22 |  | M |  |  | 138358<sup>(1)</sup> | <sup>(7)</sup> | 2025-11-05 | Common Stock | 138358 | $0 | 0 | D |  |

---

### Footnotes:

(1) Transaction pursuant to an existing Rule 10b5-1 trading plan adopted December 12, 2024 to exercise and sell stock options expiring November 5, 2025.

(2) Includes 1,079,673 restricted stock units/performance stock units, the settlement of which has been deferred pursuant to the Issuer's Deferred Equity Plan.

(3) Includes 346 shares acquired pursuant to the Issuer's employee stock purchase plan since the date of the Reporting Person's most recently filed Form 4.

(4) The price reported is the weighted average price per share.  Shares were sold in multiple transactions at prices ranging from $65.525 to $66.47 per share.  The Reporting Person will provide, upon request by the Commission staff, the Issuer or a security holder of the Issuer, full information regarding the number of shares sold at each price.

(5) The price reported is the weighted average price per share.  Shares were sold in multiple transactions at prices ranging from $66.474 to $67.275 per share.  The Reporting Person will provide, upon request by the Commission staff, the Issuer or a security holder of the Issuer, full information regarding the number of shares sold at each price.

(6) The price reported is the weighted average price per share.  Shares were sold in multiple transactions at prices ranging from $67.28 to $67.61 per share.  The Reporting Person will provide, upon request by the Commission staff, the Issuer or a security holder of the Issuer, full information regarding the number of shares sold at each price.

(7) This option to purchase common stock became exercisable in equal installments on each of the first four anniversaries of the grant date, November 5, 2015.

**Signature:** /s/ Mark W. Irving, attorney-in-fact for Mr. MacMillan  
**Date:** 2025-09-23

### 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.**