UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

SCHEDULE 13G

Under the Securities Exchange Act of 1934

(Amendment No. 5)*

Bright Horizons Family Solutions Inc.

(Name of Issuer)

Common Stock, par value $0.001 per share

(Title of Class of Securities)

109194100

(CUSIP Number)

December 31, 2018

(Date of Event Which Requires Filing of this Statement)

Check the appropriate box to designate the rule pursuant to which this schedule is filed:

☐ Rule 13d-1(b)

☐ Rule 13d-1(c)

☒ Rule 13d-1(d)

The information required in the remainder of this cover page shall not be deemed to be “filed” for the purpose of Section 18 of the Securities Exchange Act of 1934 (“Act”) or otherwise subject to the liabilities of that section of the Act but shall be subject to all other provisions of the Act (however, see the Notes).

Item 1(a). Name of Issuer

The name of the issuer to which this filing on Schedule 13G relates is Bright Horizons Family Solutions Inc. (the “Company”).

Item 1(b). Address of Issuer’s Principal Executive Offices

The principal executive offices of the Company are located at 200 Talcott Avenue South, Watertown, Massachusetts 02472.

Item 2(a). Name of Person Filing

This statement is being filed on behalf of the following: (1) BC Brightness SPV, LP, a Delaware limited partnership (“BC SPV”), (2) BCIP Associates – G, a Delaware general partnership (“BCIP-G”), (3) BCIP Associates III, LLC, a Delaware limited liability company (“BCIP III”), (4) BCIP T Associates III, LLC, a Delaware limited liability company (“BCIP T III”), (5) BCIP Associates III-B, LLC, a Delaware limited liability company (“BCIP III-B”) and (6) BCIP T Associates III-B, LLC, a Delaware limited liability company (“BCIP T III-B” and, together with BC SPV, BCIP-G, BCIP III, BCIP T III and BCIP III-B, the “Reporting Persons”).

Bain Capital Investors, LLC, a Delaware limited liability company (“BCI”), is the sole member of BC Brightness SPV GP, LLC, a Delaware limited liability company (“BC SPV GP”), which is the sole general partner of BC SPV.

Boylston Coinvestors, LLC, a Delaware limited liability company (“Boylston”), is the managing partner of BCIP-G. Boylston is the managing partner of BCIP Associates III, a Cayman Islands exempted limited partnership (“Associates III”), which is the manager of BCIP III. Boylston is the managing partner of BCIP Trust Associates III, a Cayman Islands exempted limited partnership (“Trust Associates III”), which is the manager of BCIP T III. Boylston is the managing partner of BCIP Associates III-B, a Cayman Islands exempted limited partnership (“Associates III-B”), which is the manager of BCIP III-B. Boylston is the managing partner of BCIP Trust Associates III-B, a Cayman Islands exempted limited partnership (“Trust Associates III-B”), which is the manager of BCIP T III-B. BCI governs the investment strategy and decision-making process with respect to investments held by each of BCIP-G, BCIP III, BCIPT III, BCIP III-B and BCIPT III-B.

As a result of the relationships described above, BCI may be deemed to share voting and dispositive power with respect to the securities held by the Reporting Persons.

The Reporting Persons have entered into a Joint Filing Agreement, dated February 14, 2019, pursuant to which the Reporting Persons have agreed to file this statement jointly in accordance with the provisions of Rule 13d-1(k)(1) under the Act.

Item 2(b). Address of Principal Business Office or, if none, Residence

The principal business address of each of the Reporting Persons, BCI, BC SPV GP, Boylston, Associates III, Trust Associates III, Associates III-B and Trust Associates III-B is 200 Clarendon Street, Boston, MA 02116.

Item 2(c). Citizenship

Each of BC SPV, BCIP-G, BCIP III, BCIP T III, BCIP III-B, BCIP T III-B, Boylston, BCI and BC SPV GP is organized under the laws of the State of Delaware. Each of Associates III, Trust Associates III, Associates III-B and Trust Associates III-B is organized under the laws of the Cayman Islands.

Item 2(d). Title of Class of Securities

The class of equity securities of the Company to which this filing on Schedule 13G relates is Common Stock, par value $0.001 per share (“Common Stock”).

Item 2(e). CUSIP Number

The CUSIP number of the Company’s Common Stock is 109194100.

Item 4. Ownership

Item 4(a). Amount beneficially owned

This Schedule 13G is being filed on behalf of the Reporting Persons. As of the close of business on December 31, 2018, the Reporting Persons did not beneficially own any shares of the Common Stock of the Company.

Item 4(b). Percent of Class

See Item 4(a) hereof.

Item 4(c). Number of shares as to which such person has:

Item 5. Ownership of Five Percent or Less of a Class

If this statement is being filed to report the fact that as of the date hereof the reporting person ceased to be the beneficial owner of more than five percent of the class of securities, check the following:  ☒

Item 6. Ownership of More than Five Percent on Behalf of Another Person

Not applicable.

Not applicable.

Item 8. Identification and Classification of Members of the Group

Not applicable.

Item 9. Notice of Dissolution of Group

Not applicable.

Item 10. Certification

Not applicable.

SIGNATURES

After reasonable inquiry and to the best of my knowledge and belief, the undersigned certifies that the information set forth in this Statement is true, complete and correct.

Dated: February 14, 2019

Exhibit A

Agreement Regarding the Joint Filing of Schedule 13G

The undersigned hereby agree as follows:

(i) Each of them is individually eligible to use the Schedule 13G to which this Exhibit is attached, and such Schedule 13G is filed on behalf of each of them; and

(ii) Each of them is responsible for the timely filing of such Schedule 13G and any amendments thereto, and for the completeness and accuracy of the information concerning such person contained therein; but none of them is responsible for the completeness or accuracy of the information concerning the other persons making the filing, unless such person knows or has reason to believe that such information is inaccurate.

Dated: February 14, 2019