BFLY

SEC source: 0002064832-26-000329 · form4.xml · nonDerivative · entry 1

DEVIVO JOSEPH · CIK 0001258790 · Director · President & CEO

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 7,311,930

F1 · kind: The transaction reported in this Form 4 was effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on December 12, 2025.

F2 · price: Represents the weighted average sales price per share. The shares sold at prices ranging from $10.00 to $10.18 per share. Full information regarding the number of shares sold at each price shall be provided upon request to the staff of the U.S. Securities and Exchange Commission, the Issuer, or a security holder of the Issuer.

SEC source: 0002064832-26-000327 · form4.xml · nonDerivative · entry 1

Carlson Megan · CIK 0002080055 · CAO and SVP, Finance

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 401,971

F1 · kind: The Issuer has adopted a "sell-to-cover" policy to satisfy the tax withholding obligations of the Reporting Person. The sales reported on this Form 4 represent the number of shares required to be sold by the Reporting Person to cover tax withholding obligations in connection with the vesting of restricted stock units. Such sales were automatic and not at the discretion of the Reporting Person.

F2 · price: Represents the weighted average sales price per share. The shares sold at prices ranging from $8.69 to $8.82 per share. Full information regarding the number of shares sold at each price shall be provided upon request to the staff of the U.S. Securities and Exchange Commission, the Issuer, or a security holder of the Issuer.

SEC source: 0002064832-26-000325 · form4.xml · nonDerivative · entry 2

DEVIVO JOSEPH · CIK 0001258790 · Director · President & CEO

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 7,347,720

F1 · kind: The transactions reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on December 12, 2025.

F2 · price: Represents the weighted average sales price per share. The shares sold at prices ranging from $10.00 to $10.045 per share. Full information regarding the number of shares sold at each price shall be provided upon request to the staff of the U.S. Securities and Exchange Commission, the Issuer, or a security holder of the Issuer.

SEC source: 0002064832-26-000325 · form4.xml · nonDerivative · entry 1

DEVIVO JOSEPH · CIK 0001258790 · Director · President & CEO

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 7,350,889

F1 · kind: The transactions reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on December 12, 2025.

SEC source: 0002064832-26-000322 · form4.xml · nonDerivative · entry 1

Cashman Steve · CIK 0002035576 · Chief Business Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 1,490,295

F1 · kind: The Issuer has adopted a "sell-to-cover" policy to satisfy the tax withholding obligations of the Reporting Person. The sales reported on this Form 4 represent the number of shares required to be sold by the Reporting Person to cover tax withholding obligations in connection with the vesting of restricted stock units. Such sales were automatic and not at the discretion of the Reporting Person.

F2 · price: Represents the weighted average sales price per share. The shares sold at prices ranging from $7.25 to $7.3981 per share. Full information regarding the number of shares sold at each price shall be provided upon request to the staff of the U.S. Securities and Exchange Commission, the Issuer, or a security holder of the Issuer.

SEC source: 0002064832-26-000321 · form4.xml · nonDerivative · entry 1

Carlson Megan · CIK 0002080055 · CAO and SVP, Finance

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 412,085

F1 · kind: The Issuer has adopted a "sell-to-cover" policy to satisfy the tax withholding obligations of the Reporting Person. The sales reported on this Form 4 represent the number of shares required to be sold by the Reporting Person to cover tax withholding obligations in connection with the vesting of restricted stock units. Such sales were automatic and not at the discretion of the Reporting Person.

F2 · price: Represents the weighted average sales price per share. The shares sold at prices ranging from $7.25 to $7.3981 per share. Full information regarding the number of shares sold at each price shall be provided upon request to the staff of the U.S. Securities and Exchange Commission, the Issuer, or a security holder of the Issuer.

SEC source: 0002064832-26-000312 · form4.xml · nonDerivative · entry 1

Caezza Nicholas · CIK 0002080056 · Deputy General Counsel

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 305,166

F1 · kind: The Issuer has adopted a "sell-to-cover" policy to satisfy the tax withholding obligations of the Reporting Person. The sales reported on this Form 4 represent the number of shares required to be sold by the Reporting Person to cover tax withholding obligations in connection with the vesting of restricted stock units. Such sales were automatic and not at the discretion of the Reporting Person.

F2 · price: Represents the weighted average sales price per share. The shares sold at prices ranging from $8.10 to $8.28 per share. Full information regarding the number of shares sold at each price shall be provided upon request to the staff of the U.S. Securities and Exchange Commission, the Issuer, or a security holder of the Issuer.

F3 · balance_after: Includes 6,568 shares acquired under the Issuer's employee stock purchase plan on June 30, 2026.

SEC source: 0002064832-26-000280 · form4.xml · nonDerivative · entry 1

DEVIVO JOSEPH · CIK 0001258790 · Director · President & CEO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 7,353,700

F1 · shares: The shares gifted by the Reporting Person were transferred to irrevocable trusts for the benefit of the Reporting Person's children.

SEC source: 0000905148-26-003784 · form4.xml · nonDerivative · entry 5

ROBBINS LARRY · CIK 0001228603 · Director

10b5-1 filing: No plan indicated

Ownership: Indirect · See footnotes

Disclosed balance after: 2,964,187

F10 · price: This price reflects the weighted average price for open-market sales of Shares on August 17, 2026 within a $1.00 range. The actual prices for these transactions range from $8.85 to $9.07, inclusive. Mr. Robbins further undertakes to 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 separate price.

F4 · ownership.nature: Longview Investors LLC ("Longview"), or its affiliates, is the record holder of these securities. Mr. Robbins is the managing member of Longview. Mr. Robbins shares voting and dispositive power over the securities held by Longview and may be deemed to beneficially own such securities.

F5 · ownership.nature: Mr. Robbins disclaims beneficial ownership over any securities owned by Longview and the Glenview Investment Funds other than to the extent of any pecuniary interest he may have therein.

SEC source: 0002064832-26-000274 · form4.xml · nonDerivative · entry 1

Phanstiel S. Louise · CIK 0001471518 · Director

10b5-1 filing: No plan indicated

Ownership: Indirect · By The Phanstiel Trust u/a/d 2/5/02

Disclosed balance after: 300,461

F1 · price: Represents the weighted average purchase price per share. The shares were purchased at prices ranging from $8.49 to $8.865 per share. Full information regarding the number of shares purchased at each price shall be provided upon request to the staff of the U.S. Securities and Exchange Commission, the Issuer, or a security holder of the Issuer.

SEC source: 0000905148-26-003784 · form4.xml · nonDerivative · entry 4

ROBBINS LARRY · CIK 0001228603 · Director

10b5-1 filing: No plan indicated

Ownership: Indirect · See footnotes

Disclosed balance after: 3,546,687

F9 · price: This price reflects the weighted average price for open-market sales of Shares on August 14, 2026 within a $1.00 range. The actual prices for these transactions range from $8.36 to $8.94, inclusive. Mr. Robbins further undertakes to 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 separate price.

F4 · ownership.nature: Longview Investors LLC ("Longview"), or its affiliates, is the record holder of these securities. Mr. Robbins is the managing member of Longview. Mr. Robbins shares voting and dispositive power over the securities held by Longview and may be deemed to beneficially own such securities.

F5 · ownership.nature: Mr. Robbins disclaims beneficial ownership over any securities owned by Longview and the Glenview Investment Funds other than to the extent of any pecuniary interest he may have therein.

SEC source: 0000905148-26-003784 · form4.xml · nonDerivative · entry 3

ROBBINS LARRY · CIK 0001228603 · Director

10b5-1 filing: No plan indicated

Ownership: Indirect · See footnotes

Disclosed balance after: 4,371,387

F8 · price: This price reflects the weighted average price for open-market sales of Shares on August 13, 2026 within a $1.00 range. The actual prices for these transactions range from $8.86 to $9.12, inclusive. Mr. Robbins further undertakes to 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 separate price.

F4 · ownership.nature: Longview Investors LLC ("Longview"), or its affiliates, is the record holder of these securities. Mr. Robbins is the managing member of Longview. Mr. Robbins shares voting and dispositive power over the securities held by Longview and may be deemed to beneficially own such securities.

F5 · ownership.nature: Mr. Robbins disclaims beneficial ownership over any securities owned by Longview and the Glenview Investment Funds other than to the extent of any pecuniary interest he may have therein.

SEC source: 0000905148-26-003784 · form4.xml · nonDerivative · entry 2

ROBBINS LARRY · CIK 0001228603 · Director

10b5-1 filing: No plan indicated

Ownership: Indirect · See footnotes

Disclosed balance after: 11,743,530

F6 · shares: These Shares were sold by Glenview Offshore Opportunity Master Fund, Ltd.

F7 · price: This price reflects the weighted average price for open-market sales of Shares on August 13, 2026 within a $1.00 range. The actual prices for these transactions range from $9.035 to $9.3408, inclusive. Mr. Robbins further undertakes to 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 separate price.

F3 · ownership.nature: Glenview Capital Master Fund, Ltd., Glenview Offshore Opportunity Master Fund, Ltd. and Glenview Healthcare Master Fund, L.P. (collectively, the "Glenview Investment Funds") are the record holders of these Shares. Mr. Robbins is the Founder, Portfolio Manager and CIO of Glenview Capital Management, LLC, which serves as investment manager to each of the Glenview Investment Funds. Mr. Robbins shares voting and dispositive power over the Shares held by the Glenview Investment Funds and may be deemed to beneficially own such Shares.

F5 · ownership.nature: Mr. Robbins disclaims beneficial ownership over any securities owned by Longview and the Glenview Investment Funds other than to the extent of any pecuniary interest he may have therein.

SEC source: 0000905148-26-003784 · form4.xml · nonDerivative · entry 1

ROBBINS LARRY · CIK 0001228603 · Director

10b5-1 filing: No plan indicated

Ownership: Indirect · See footnotes

Disclosed balance after: 12,243,530

F1 · shares: These shares of the Issuer's common stock, par value $0.0001 per share (the "Shares"), were sold by Glenview Offshore Opportunity Master Fund, Ltd. and Glenview Healthcare Master Fund, L.P.

F2 · price: This price reflects the weighted average price for open-market sales of Shares on August 13, 2026 within a $1.00 range. The actual prices for these transactions range from $9.43 to $9.575, inclusive. Mr. Robbins further undertakes to 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 separate price.

F3 · ownership.nature: Glenview Capital Master Fund, Ltd., Glenview Offshore Opportunity Master Fund, Ltd. and Glenview Healthcare Master Fund, L.P. (collectively, the "Glenview Investment Funds") are the record holders of these Shares. Mr. Robbins is the Founder, Portfolio Manager and CIO of Glenview Capital Management, LLC, which serves as investment manager to each of the Glenview Investment Funds. Mr. Robbins shares voting and dispositive power over the Shares held by the Glenview Investment Funds and may be deemed to beneficially own such Shares.

F5 · ownership.nature: Mr. Robbins disclaims beneficial ownership over any securities owned by Longview and the Glenview Investment Funds other than to the extent of any pecuniary interest he may have therein.

SEC source: 0002064832-26-000270 · form4.xml · nonDerivative · entry 1

Caezza Nicholas · CIK 0002080056 · Deputy General Counsel

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 300,307

SEC source: 0002064832-26-000268 · form4.xml · nonDerivative · entry 1

DEVIVO JOSEPH · CIK 0001258790 · Director · President & CEO

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 7,603,700

F1 · kind: The transaction reported in this Form 4 was effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on December 12, 2025.

F2 · price: Represents the weighted average sales price per share. The shares sold at prices ranging from $10.00 to $10.05 per share. Full information regarding the number of shares sold at each price shall be provided upon request to the staff of the U.S. Securities and Exchange Commission, the Issuer, or a security holder of the Issuer.

SEC source: 0000905148-26-003455 · form4.xml · nonDerivative · entry 2

ROBBINS LARRY · CIK 0001228603 · Director

10b5-1 filing: No plan indicated

Ownership: Indirect · See footnotes

Disclosed balance after: 12,458,763

F1 · shares: These shares of the Issuer's common stock, par value $0.0001 per share (the "Shares"), were transferred by Glenview Capital Master Fund, Ltd. to GCM Onshore Investors, L.P. and GCM Cayman Investors, Ltd. on July 1, 2026, in a transaction exempt from Section 16 of the Securities Exchange Act of 1934, as amended, pursuant to Rule 16a-13 thereunder, and were subsequently sold by GCM Onshore Investors, L.P. and GCM Cayman Investors, Ltd.

F3 · ownership.nature: GCM Onshore Investors, L.P., GCM Cayman Investors, Ltd., Glenview Capital Master Fund, Ltd., Glenview Offshore Opportunity Master Fund, Ltd. and Glenview Healthcare Master Fund, L.P. (collectively, the "Glenview Investment Funds") are the record holders of these Shares. Mr. Robbins is the Founder, Portfolio Manager and CIO of Glenview Capital Management, LLC, which serves as investment advisor or investment manager to each of the Glenview Investment Funds. Mr. Robbins shares voting and dispositive power over the Shares held by the Glenview Investment Funds and may be deemed to beneficially own such Shares.

F5 · ownership.nature: Mr. Robbins disclaims beneficial ownership over any securities owned by Longview and the Glenview Investment Funds other than to the extent of any pecuniary interest he may have therein.

SEC source: 0000905148-26-003455 · form4.xml · nonDerivative · entry 1

ROBBINS LARRY · CIK 0001228603 · Director

10b5-1 filing: No plan indicated

Ownership: Indirect · See footnotes

Disclosed balance after: 12,614,926

F1 · shares: These shares of the Issuer's common stock, par value $0.0001 per share (the "Shares"), were transferred by Glenview Capital Master Fund, Ltd. to GCM Onshore Investors, L.P. and GCM Cayman Investors, Ltd. on July 1, 2026, in a transaction exempt from Section 16 of the Securities Exchange Act of 1934, as amended, pursuant to Rule 16a-13 thereunder, and were subsequently sold by GCM Onshore Investors, L.P. and GCM Cayman Investors, Ltd.

F2 · price: This price reflects the weighted average price for open-market sales of Shares on July 31, 2026 within a $1.00 range. The actual prices for these transactions range from $7.2282 to $7.82, inclusive. Mr. Robbins further undertakes to 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 separate price.

F3 · ownership.nature: GCM Onshore Investors, L.P., GCM Cayman Investors, Ltd., Glenview Capital Master Fund, Ltd., Glenview Offshore Opportunity Master Fund, Ltd. and Glenview Healthcare Master Fund, L.P. (collectively, the "Glenview Investment Funds") are the record holders of these Shares. Mr. Robbins is the Founder, Portfolio Manager and CIO of Glenview Capital Management, LLC, which serves as investment advisor or investment manager to each of the Glenview Investment Funds. Mr. Robbins shares voting and dispositive power over the Shares held by the Glenview Investment Funds and may be deemed to beneficially own such Shares.

F5 · ownership.nature: Mr. Robbins disclaims beneficial ownership over any securities owned by Longview and the Glenview Investment Funds other than to the extent of any pecuniary interest he may have therein.

SEC source: 0002064832-26-000264 · form4.xml · nonDerivative · entry 1

Carlson Megan · CIK 0002080055 · CAO and SVP, Finance

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 425,889

F1 · price: Represents the weighted average sales price per share. The shares sold at prices ranging from $7.775 to $8.005 per share. Full information regarding the number of shares sold at each price shall be provided upon request to the staff of the U.S. Securities and Exchange Commission, the Issuer, or a security holder of the Issuer.

F2 · balance_after: Includes 28,835 shares acquired under the Issuer's employee stock purchase plan on June 30, 2026.

SEC source: 0001104659-26-086681 · tm2621235-1_4seq1.xml · nonDerivative · entry 4

ROTHBERG JONATHAN M · CIK 0001076352 · Director

10b5-1 filing: Plan reported

Ownership: Indirect · By JNR TR, LLC

Disclosed balance after: 0

F1 · security: In accordance with its terms, the Class B common stock automatically converted into Class A common stock, on a one-to-one basis, upon sale.

F2 · kind: The transactions reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on March 13, 2026 for estate planning purposes.

F3 · price: Represents the weighted average sales price per share. The shares sold at prices ranging from $6.355 to $6.78 per share. Full information regarding the number of shares sold at each price shall be provided upon request to the staff of the U.S. Securities and Exchange Commission, the Issuer, or a security holder of the Issuer.

F4 · ownership.nature: Dr. Rothberg is the Manager of 4C Holdings I, LLC, 4C Holdings II, LLC, 4C Holdings III, LLC, 4C Holdings IV, LLC, 4C Holdings V, LLC, NVR TR, LLC, JNR TR, LLC, GBR TR, LLC and EJR TR, LLC, and is the spouse of Bonnie E Gould Rothberg MD. Dr. Rothberg disclaims beneficial ownership of the securities held by these persons and entities except to the extent of his pecuniary interest therein.

SEC source: 0001104659-26-086681 · tm2621235-1_4seq1.xml · nonDerivative · entry 3

ROTHBERG JONATHAN M · CIK 0001076352 · Director

10b5-1 filing: Plan reported

Ownership: Indirect · By EJR TR, LLC

Disclosed balance after: 0

F1 · security: In accordance with its terms, the Class B common stock automatically converted into Class A common stock, on a one-to-one basis, upon sale.

F2 · kind: The transactions reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on March 13, 2026 for estate planning purposes.

F3 · price: Represents the weighted average sales price per share. The shares sold at prices ranging from $6.355 to $6.78 per share. Full information regarding the number of shares sold at each price shall be provided upon request to the staff of the U.S. Securities and Exchange Commission, the Issuer, or a security holder of the Issuer.

F4 · ownership.nature: Dr. Rothberg is the Manager of 4C Holdings I, LLC, 4C Holdings II, LLC, 4C Holdings III, LLC, 4C Holdings IV, LLC, 4C Holdings V, LLC, NVR TR, LLC, JNR TR, LLC, GBR TR, LLC and EJR TR, LLC, and is the spouse of Bonnie E Gould Rothberg MD. Dr. Rothberg disclaims beneficial ownership of the securities held by these persons and entities except to the extent of his pecuniary interest therein.

SEC source: 0001104659-26-086681 · tm2621235-1_4seq1.xml · nonDerivative · entry 2

ROTHBERG JONATHAN M · CIK 0001076352 · Director

10b5-1 filing: Plan reported

Ownership: Indirect · By NVR TR, LLC

Disclosed balance after: 0

F1 · security: In accordance with its terms, the Class B common stock automatically converted into Class A common stock, on a one-to-one basis, upon sale.

F2 · kind: The transactions reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on March 13, 2026 for estate planning purposes.

F3 · price: Represents the weighted average sales price per share. The shares sold at prices ranging from $6.355 to $6.78 per share. Full information regarding the number of shares sold at each price shall be provided upon request to the staff of the U.S. Securities and Exchange Commission, the Issuer, or a security holder of the Issuer.

F4 · ownership.nature: Dr. Rothberg is the Manager of 4C Holdings I, LLC, 4C Holdings II, LLC, 4C Holdings III, LLC, 4C Holdings IV, LLC, 4C Holdings V, LLC, NVR TR, LLC, JNR TR, LLC, GBR TR, LLC and EJR TR, LLC, and is the spouse of Bonnie E Gould Rothberg MD. Dr. Rothberg disclaims beneficial ownership of the securities held by these persons and entities except to the extent of his pecuniary interest therein.

SEC source: 0001104659-26-086681 · tm2621235-1_4seq1.xml · nonDerivative · entry 1

ROTHBERG JONATHAN M · CIK 0001076352 · Director

10b5-1 filing: Plan reported

Ownership: Indirect · By GBR TR, LLC

Disclosed balance after: 0

F1 · security: In accordance with its terms, the Class B common stock automatically converted into Class A common stock, on a one-to-one basis, upon sale.

F2 · kind: The transactions reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on March 13, 2026 for estate planning purposes.

F3 · price: Represents the weighted average sales price per share. The shares sold at prices ranging from $6.355 to $6.78 per share. Full information regarding the number of shares sold at each price shall be provided upon request to the staff of the U.S. Securities and Exchange Commission, the Issuer, or a security holder of the Issuer.

F4 · ownership.nature: Dr. Rothberg is the Manager of 4C Holdings I, LLC, 4C Holdings II, LLC, 4C Holdings III, LLC, 4C Holdings IV, LLC, 4C Holdings V, LLC, NVR TR, LLC, JNR TR, LLC, GBR TR, LLC and EJR TR, LLC, and is the spouse of Bonnie E Gould Rothberg MD. Dr. Rothberg disclaims beneficial ownership of the securities held by these persons and entities except to the extent of his pecuniary interest therein.

SEC source: 0001104659-26-085497 · tm2621031-1_4seq1.xml · nonDerivative · entry 3

ROTHBERG JONATHAN M · CIK 0001076352 · Director · 10% owner

10b5-1 filing: Plan reported

Ownership: Indirect · By EJR TR, LLC

Disclosed balance after: 496,680

F1 · security: In accordance with its terms, the Class B common stock automatically converted into Class A common stock, on a one-to-one basis, upon sale.

F2 · kind: The transactions reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on March 13, 2026 for estate planning purposes.

F6 · price: Represents the weighted average sales price per share. The shares sold at prices ranging from $6.505 to $6.8755 per share. Full information regarding the number of shares sold at each price shall be provided upon request to the staff of the U.S. Securities and Exchange Commission, the Issuer, or a security holder of the Issuer.

F4 · ownership.nature: Dr. Rothberg is the Manager of 4C Holdings I, LLC, 4C Holdings II, LLC, 4C Holdings III, LLC, 4C Holdings IV, LLC, 4C Holdings V, LLC, NVR TR, LLC, JNR TR, LLC, GBR TR, LLC and EJR TR, LLC, and is the spouse of Bonnie E Gould Rothberg MD. Dr. Rothberg disclaims beneficial ownership of the securities held by these persons and entities except to the extent of his pecuniary interest therein.

SEC source: 0001104659-26-085497 · tm2621031-1_4seq1.xml · nonDerivative · entry 2

ROTHBERG JONATHAN M · CIK 0001076352 · Director · 10% owner

10b5-1 filing: Plan reported

Ownership: Indirect · By NVR TR, LLC

Disclosed balance after: 72,724

F1 · security: In accordance with its terms, the Class B common stock automatically converted into Class A common stock, on a one-to-one basis, upon sale.

F2 · kind: The transactions reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on March 13, 2026 for estate planning purposes.

F5 · price: Represents the weighted average sales price per share. The shares sold at prices ranging from $6.44 to $6.72 per share. Full information regarding the number of shares sold at each price shall be provided upon request to the staff of the U.S. Securities and Exchange Commission, the Issuer, or a security holder of the Issuer.

F4 · ownership.nature: Dr. Rothberg is the Manager of 4C Holdings I, LLC, 4C Holdings II, LLC, 4C Holdings III, LLC, 4C Holdings IV, LLC, 4C Holdings V, LLC, NVR TR, LLC, JNR TR, LLC, GBR TR, LLC and EJR TR, LLC, and is the spouse of Bonnie E Gould Rothberg MD. Dr. Rothberg disclaims beneficial ownership of the securities held by these persons and entities except to the extent of his pecuniary interest therein.

SEC source: 0002064832-26-000262 · form4.xml · nonDerivative · entry 1

Ku Victor · CIK 0002087062 · Chief Technology Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 1,015,099

F1 · kind: The Issuer has adopted a "sell-to-cover" policy to satisfy the tax withholding obligations of the Reporting Person. The sales reported on this Form 4 represent the number of shares required to be sold by the Reporting Person to cover tax withholding obligations in connection with the vesting of restricted stock units. Such sales were automatic and not at the discretion of the Reporting Person.

F2 · price: Represents the weighted average sales price per share. The shares sold at prices ranging from $6.46 to $6.665 per share. Full information regarding the number of shares sold at each price shall be provided upon request to the staff of the U.S. Securities and Exchange Commission, the Issuer, or a security holder of the Issuer.

SEC source: 0002064832-26-000260 · form4.xml · nonDerivative · entry 1

DEVIVO JOSEPH · CIK 0001258790 · Director · President & CEO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 7,672,046

F1 · kind: The Issuer has adopted a "sell-to-cover" policy to satisfy the tax withholding obligations of the Reporting Person. The sales reported on this Form 4 represent the number of shares required to be sold by the Reporting Person to cover tax withholding obligations in connection with the vesting of restricted stock units. Such sales were automatic and not at the discretion of the Reporting Person.

F2 · price: Represents the weighted average sales price per share. The shares sold at prices ranging from $6.46 to $6.665 per share. Full information regarding the number of shares sold at each price shall be provided upon request to the staff of the U.S. Securities and Exchange Commission, the Issuer, or a security holder of the Issuer.

SEC source: 0002064832-26-000261 · form4.xml · nonDerivative · entry 1

Doherty John N. · CIK 0001645756 · EVP, CFO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 1,397,276

F1 · kind: The Issuer has adopted a "sell-to-cover" policy to satisfy the tax withholding obligations of the Reporting Person. The sales reported on this Form 4 represent the number of shares required to be sold by the Reporting Person to cover tax withholding obligations in connection with the vesting of restricted stock units. Such sales were automatic and not at the discretion of the Reporting Person.

F2 · price: Represents the weighted average sales price per share. The shares sold at prices ranging from $6.46 to $6.665 per share. Full information regarding the number of shares sold at each price shall be provided upon request to the staff of the U.S. Securities and Exchange Commission, the Issuer, or a security holder of the Issuer.

SEC source: 0001104659-26-085497 · tm2621031-1_4seq1.xml · nonDerivative · entry 1

ROTHBERG JONATHAN M · CIK 0001076352 · Director · 10% owner

10b5-1 filing: Plan reported

Ownership: Indirect · By GBR TR, LLC

Disclosed balance after: 54,143

F1 · security: In accordance with its terms, the Class B common stock automatically converted into Class A common stock, on a one-to-one basis, upon sale.

F2 · kind: The transactions reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on March 13, 2026 for estate planning purposes.

F3 · price: Represents the weighted average sales price per share. The shares sold at prices ranging from $6.435 to $6.855 per share. Full information regarding the number of shares sold at each price shall be provided upon request to the staff of the U.S. Securities and Exchange Commission, the Issuer, or a security holder of the Issuer.

F4 · ownership.nature: Dr. Rothberg is the Manager of 4C Holdings I, LLC, 4C Holdings II, LLC, 4C Holdings III, LLC, 4C Holdings IV, LLC, 4C Holdings V, LLC, NVR TR, LLC, JNR TR, LLC, GBR TR, LLC and EJR TR, LLC, and is the spouse of Bonnie E Gould Rothberg MD. Dr. Rothberg disclaims beneficial ownership of the securities held by these persons and entities except to the extent of his pecuniary interest therein.

SEC source: 0001104659-26-084347 · tm2620723-1_4seq1.xml · nonDerivative · entry 4

ROTHBERG JONATHAN M · CIK 0001076352 · Director · 10% owner

10b5-1 filing: Plan reported

Ownership: Indirect · By JNR TR, LLC

Disclosed balance after: 36,366

F5 · security: In accordance with its terms, the Class B common stock automatically converted into Class A common stock, on a one-to-one basis, upon sale.

F1 · kind: The transactions reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on March 13, 2026 for estate planning purposes.

F6 · price: Represents the weighted average sales price per share. The shares sold at prices ranging from $6.845 to $7.45 per share. Full information regarding the number of shares sold at each price shall be provided upon request to the staff of the U.S. Securities and Exchange Commission, the Issuer, or a security holder of the Issuer.

F7 · ownership.nature: Dr. Rothberg is the Manager of 4C Holdings I, LLC, 4C Holdings II, LLC, 4C Holdings III, LLC, 4C Holdings IV, LLC, 4C Holdings V, LLC, NVR TR, LLC, JNR TR, LLC, GBR TR, LLC and EJR TR, LLC, and is the spouse of Bonnie E Gould Rothberg MD. Dr. Rothberg disclaims beneficial ownership of the securities held by these persons and entities except to the extent of his pecuniary interest therein.

SEC source: 0001104659-26-084347 · tm2620723-1_4seq1.xml · nonDerivative · entry 3

ROTHBERG JONATHAN M · CIK 0001076352 · Director · 10% owner

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 105,881

F1 · kind: The transactions reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on March 13, 2026 for estate planning purposes.

F4 · price: Represents the weighted average sales price per share. The shares sold at prices ranging from $6.845 to $7.45 per share. Full information regarding the number of shares sold at each price shall be provided upon request to the staff of the U.S. Securities and Exchange Commission, the Issuer, or a security holder of the Issuer.

SEC source: 0001104659-26-084347 · tm2620723-1_4seq1.xml · nonDerivative · entry 2

ROTHBERG JONATHAN M · CIK 0001076352 · Director · 10% owner

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 359,748

F1 · kind: The transactions reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on March 13, 2026 for estate planning purposes.

F3 · price: Represents the weighted average sales price per share. The shares sold at prices ranging from $7.0873 to $7.83 per share. Full information regarding the number of shares sold at each price shall be provided upon request to the staff of the U.S. Securities and Exchange Commission, the Issuer, or a security holder of the Issuer.

SEC source: 0001104659-26-084347 · tm2620723-1_4seq1.xml · nonDerivative · entry 1

ROTHBERG JONATHAN M · CIK 0001076352 · Director · 10% owner

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 2,090,067

F1 · kind: The transactions reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on March 13, 2026 for estate planning purposes.

F2 · price: Represents the weighted average sales price per share. The shares sold at prices ranging from $7.545 to $8.00 per share. Full information regarding the number of shares sold at each price shall be provided upon request to the staff of the U.S. Securities and Exchange Commission, the Issuer, or a security holder of the Issuer.

SEC source: 0002064832-26-000256 · form4.xml · nonDerivative · entry 1

Ku Victor · CIK 0002087062 · Chief Technology Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 1,063,639

F1 · kind: The Issuer has adopted a "sell-to-cover" policy to satisfy the tax withholding obligations of the Reporting Person. The sales reported on this Form 4 represent the number of shares required to be sold by the Reporting Person to cover tax withholding obligations in connection with the vesting of restricted stock units. Such sales were automatic and not at the discretion of the Reporting Person.

F2 · price: Represents the weighted average sales price per share. The shares sold at prices ranging from $7.735 to $8.11 per share. Full information regarding the number of shares sold at each price shall be provided upon request to the staff of the U.S. Securities and Exchange Commission, the Issuer, or a security holder of the Issuer.

SEC source: 0002064832-26-000252 · form4.xml · nonDerivative · entry 1

DEVIVO JOSEPH · CIK 0001258790 · Director · President & CEO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 7,883,844

F1 · kind: The Issuer has adopted a "sell-to-cover" policy to satisfy the tax withholding obligations of the Reporting Person. The sales reported on this Form 4 represent the number of shares required to be sold by the Reporting Person to cover tax withholding obligations in connection with the vesting of restricted stock units. Such sales were automatic and not at the discretion of the Reporting Person.

F2 · price: Represents the weighted average sales price per share. The shares sold at prices ranging from $7.735 to $8.11 per share. Full information regarding the number of shares sold at each price shall be provided upon request to the staff of the U.S. Securities and Exchange Commission, the Issuer, or a security holder of the Issuer.

F3 · balance_after: Includes 28,835 shares acquired under the Issuer's employee stock purchase plan on June 30, 2025 and 28,835 shares acquired under the Issuer's employee stock purchase plan on June 30, 2026.

SEC source: 0002064832-26-000254 · form4.xml · nonDerivative · entry 1

Doherty John N. · CIK 0001645756 · EVP, CFO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 1,454,412

F1 · kind: The Issuer has adopted a "sell-to-cover" policy to satisfy the tax withholding obligations of the Reporting Person. The sales reported on this Form 4 represent the number of shares required to be sold by the Reporting Person to cover tax withholding obligations in connection with the vesting of restricted stock units. Such sales were automatic and not at the discretion of the Reporting Person.

F2 · price: Represents the weighted average sales price per share. The shares sold at prices ranging from $7.735 to $8.11 per share. Full information regarding the number of shares sold at each price shall be provided upon request to the staff of the U.S. Securities and Exchange Commission, the Issuer, or a security holder of the Issuer.

SEC source: 0002064832-26-000250 · form4.xml · nonDerivative · entry 1

Carlson Megan · CIK 0002080055 · CAO and SVP, Finance

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 465,906

F1 · kind: The Issuer has adopted a "sell-to-cover" policy to satisfy the tax withholding obligations of the Reporting Person. The sales reported on this Form 4 represent the number of shares required to be sold by the Reporting Person to cover tax withholding obligations in connection with the vesting of restricted stock units. Such sales were automatic and not at the discretion of the Reporting Person.

F2 · price: Represents the weighted average sales price per share. The shares sold at prices ranging from $7.83 to $8.10 per share. Full information regarding the number of shares sold at each price shall be provided upon request to the staff of the U.S. Securities and Exchange Commission, the Issuer, or a security holder of the Issuer.

SEC source: 0002064832-26-000238 · form4.xml · nonDerivative · entry 1

ROTHBERG JONATHAN M · CIK 0001076352 · Director · 10% owner

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 2,905,699

F1 · shares: Consists of restricted stock units ("RSUs"). Each RSU represents the right to receive one share of Class A common stock upon vesting. The RSUs were issued to the Reporting Person as the annual grant to nonemployee directors pursuant to the Issuer's Amended and Restated Nonemployee Director Compensation Policy for services to be rendered to the Issuer as a member of its Board of Directors. The RSUs vest in full on the date of the Issuer's 2027 Annual Stockholders Meeting, subject to the Reporting Person's continued service on the Board of Directors on such date.

SEC source: 0002064832-26-000240 · form4.xml · nonDerivative · entry 1

Schwartz Erica · CIK 0001872122 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 401,699

F1 · shares: Consists of restricted stock units ("RSUs"). Each RSU represents the right to receive one share of Class A common stock upon vesting. The RSUs were issued to the Reporting Person as the annual grant to nonemployee directors pursuant to the Issuer's Amended and Restated Nonemployee Director Compensation Policy for services to be rendered to the Issuer as a member of its Board of Directors. The RSUs vest in full on the date of the Issuer's 2027 Annual Stockholders Meeting, subject to the Reporting Person's continued service on the Board of Directors on such date.

SEC source: 0002064832-26-000234 · form4.xml · nonDerivative · entry 1

Phanstiel S. Louise · CIK 0001471518 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 390,952

F1 · shares: Consists of restricted stock units ("RSUs"). Each RSU represents the right to receive one share of Class A common stock upon vesting. The RSUs were issued to the Reporting Person as the annual grant to nonemployee directors pursuant to the Issuer's Amended and Restated Nonemployee Director Compensation Policy for services to be rendered to the Issuer as a member of its Board of Directors. The RSUs vest in full on the date of the Issuer's 2027 Annual Stockholders Meeting, subject to the Reporting Person's continued service on the Board of Directors on such date.

SEC source: 0002064832-26-000236 · form4.xml · nonDerivative · entry 1

ROBBINS LARRY · CIK 0001228603 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 390,952

F1 · shares: Consists of restricted stock units ("RSUs"). Each RSU represents the right to receive one share of Class A common stock upon vesting. The RSUs were issued to the Reporting Person as the annual grant to nonemployee directors pursuant to the Issuer's Amended and Restated Nonemployee Director Compensation Policy for services to be rendered to the Issuer as a member of its Board of Directors. The RSUs vest in full on the date of the Issuer's 2027 Annual Stockholders Meeting, subject to the Reporting Person's continued service on the Board of Directors on such date.

SEC source: 0002064832-26-000230 · form4.xml · nonDerivative · entry 1

Edelman Elazer R · CIK 0001662771 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 392,893

F1 · shares: Consists of restricted stock units ("RSUs"). Each RSU represents the right to receive one share of Class A common stock upon vesting. The RSUs were issued to the Reporting Person as the annual grant to nonemployee directors pursuant to the Issuer's Amended and Restated Nonemployee Director Compensation Policy for services to be rendered to the Issuer as a member of its Board of Directors. The RSUs vest in full on the date of the Issuer's 2027 Annual Stockholders Meeting, subject to the Reporting Person's continued service on the Board of Directors on such date.

SEC source: 0002064832-26-000232 · form4.xml · nonDerivative · entry 1

Neubauer Caroll H · CIK 0002131822 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 98,617

F1 · shares: Consists of restricted stock units ("RSUs"). Each RSU represents the right to receive one share of Class A common stock upon vesting. The RSUs were issued to the Reporting Person as the annual grant to nonemployee directors pursuant to the Issuer's Amended and Restated Nonemployee Director Compensation Policy for services to be rendered to the Issuer as a member of its Board of Directors. The RSUs vest in full on the date of the Issuer's 2027 Annual Stockholders Meeting, subject to the Reporting Person's continued service on the Board of Directors on such date.

SEC source: 0002064832-26-000223 · form4.xml · nonDerivative · entry 2

Cashman Steve · CIK 0002035576 · Chief Business Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 1,630,407

F2 · price: Represents the weighted average sales price per share. The shares sold at prices ranging from $4.610 to $4.735 per share. Full information regarding the number of shares sold at each price shall be provided upon request to the staff of the U.S. Securities and Exchange Commission, the Issuer, or a security holder of the Issuer.

SEC source: 0002064832-26-000223 · form4.xml · nonDerivative · entry 1

Cashman Steve · CIK 0002035576 · Chief Business Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 1,925,087

F1 · price: Represents the weighted average sales price per share. The shares sold at prices ranging from $4.9 to $5.025 per share. Full information regarding the number of shares sold at each price shall be provided upon request to the staff of the U.S. Securities and Exchange Commission, the Issuer, or a security holder of the Issuer.

SEC source: 0002064832-26-000221 · form4.xml · nonDerivative · entry 1

Caezza Nicholas · CIK 0002080056 · Deputy General Counsel

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 310,307

F1 · kind: The Issuer has adopted a "sell-to-cover" policy to satisfy the tax withholding obligations of the Reporting Person. The sales reported on this Form 4 represent the number of shares required to be sold by the Reporting Person to cover tax withholding obligations in connection with the vesting of restricted stock units. Such sales were automatic and not at the discretion of the Reporting Person.

F2 · price: Represents the weighted average sales price per share. The shares sold at prices ranging from $4.46 to $4.57 per share. Full information regarding the number of shares sold at each price shall be provided upon request to the staff of the U.S. Securities and Exchange Commission, the Issuer, or a security holder of the Issuer.

SEC source: 0002064832-26-000215 · form4.xml · nonDerivative · entry 1

Neubauer Caroll H · CIK 0002131822 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 73,170

F1 · shares: Consists of restricted stock units ("RSUs"). Each RSU represents the right to receive one share of Class A common stock upon vesting. The RSUs vest in equal annual installments over three years beginning on May 19, 2027, subject to Mr. Neubauer's continued service on the Board of Directors on the applicable vesting date.

SEC source: 0002064832-26-000192 · form4.xml · nonDerivative · entry 1

Carlson Megan · CIK 0002080055 · CAO and SVP, Finance

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 507,209

F1 · price: Represents the weighted average sales price per share. The shares sold at prices ranging from $4.735 to $4.785 per share. Full information regarding the number of shares sold at each price shall be provided upon request to the staff of the U.S. Securities and Exchange Commission, the Issuer, or a security holder of the Issuer.

SEC source: 0002064832-26-000190 · form4.xml · nonDerivative · entry 1

Cashman Steve · CIK 0002035576 · Chief Business Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 2,029,868

F1 · kind: The Issuer has adopted a "sell-to-cover" policy to satisfy the tax withholding obligations of the Reporting Person. The sales reported on this Form 4 represent the number of shares required to be sold by the Reporting Person to cover tax withholding obligations in connection with the vesting of restricted stock units. Such sales were automatic and not at the discretion of the Reporting Person.

F2 · price: Represents the weighted average sales price per share. The shares sold at prices ranging from $4.82 to $5.125 per share. Full information regarding the number of shares sold at each price shall be provided upon request to the staff of the U.S. Securities and Exchange Commission, the Issuer, or a security holder of the Issuer.

SEC source: 0002064832-26-000169 · form4.xml · nonDerivative · entry 1

Cashman Steve · CIK 0002035576 · Chief Business Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 2,177,386

F1 · kind: The transaction reported in this Form 4 was effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on September 12, 2025.

F2 · price: Represents the weighted average sales price per share. The shares sold at prices ranging from $5.00 to $5.610 per share. Full information regarding the number of shares sold at each price shall be provided upon request to the staff of the U.S. Securities and Exchange Commission, the Issuer, or a security holder of the Issuer.