Insider Trading Report (SEC Filing - 4)

Exhibit 99.1

Footnotes to Form 4

(1) The shares of the Issuer reported are beneficially owned by: THL Holdco, LLC ('THL Holdco'); Thomas H. Lee Partners, L.P. ('THL'); Thomas H. Lee Advisors, LLC ('THL Advisors'); Thomas H. Lee Equity Fund VI (2019), L.P. ('Fund VI 2019'); THL Fund VI (2019) Coinvestment Partners, L.P. ('Fund VI 2019 Coinvest'); Thomas H. Lee Equity Fund VII, L.P. ('Equity Fund VII'); Thomas H. Lee Parallel Fund VII, L.P. ('Parallel Fund VII'); Thomas H. Lee Parallel (Cayman) Fund VII, L.P. ('Parallel (Cayman) Fund VII'); THL Executive Fund VII ('Executive Fund VII'); THL Equity Fund VII Investors (inVentiv), L.P. ('Equity Fund VII (inVentiv)'); THL Fund VII Coinvestment Partners, L.P. ('Fund VII Coinvest'); THL Coinvestment Partners, L.P. ('Coinvest Partners'); THL Managers VI, LLC ('THL Managers VI'); THL Managers VII, LLC ('THL Managers VII') (collectively with their affiliates, the 'THL Funds'); Todd M. Abbrecht; and Joshua M. Nelson.

(2) THL Holdco is the managing member of THL Advisors, which in turn is the general partner of THL, which in turn is the sole member of THL Equity Advisors VI (2019), LLC ('Equity Advisors VI (2019)'), the sole member of THL Equity Advisors VII ('Equity Advisors VII'), the general partner of Fund VI 2019 Coinvest, and the general partner of Fund VII Coinvest. Equity Advisors VI (2019) is the general partner of Fund VI 2019. Equity Advisors VII is the general partner of Equity Fund VII, Parallel Fund VII, Parallel (Cayman) Fund VII, Executive Fund VII, and Equity Fund VII (inVentiv).

(3) Each of the Reporting Persons disclaims beneficial ownership of all shares of the Issuer for the purposes of Section 16 or for any other purpose, except to the extent of such Reporting Person's pecuniary interest therein.

(4) Represents shares directly held by the following entities: 1,558,352 shares by Fund VI 2019, 44,180 shares by Fund VI 2019 Coinvest, 416,114 shares by Equity Fund VII, 328,331 shares by Parallel Fund VII, 440,066 shares by Parallel (Cayman) Fund VII, L.P., 36,474 shares by Executive Fund VII, 63,457 shares by Fund VII Coinvest and 2,714,456 shares by Equity Fund VII (inVentiv).

(5) Represents shares directly held by THL Managers VI following.

(6) Represents shares directly held by THL Managers VII following.

(7) Represents an award of restricted stock units to be settled in shares which vests in full one year from the grant date, or, if earlier, the date of the next subsequent annual meeting following the grant date but only to the extent the director is not re-elected as a non-employee director at such annual meeting, in each case, subject to continued service on the Issuer's Board of Directors.

(8) Todd M. Abbrecht is a Managing Partner of THL. Pursuant to the operative agreements among certain of the THL Funds, any securities issued to persons serving as directors of portfolio companies of the THL Funds, such as the Issuer, are to be held for the benefit of the THL Funds.

(9) Joshua M. Nelson is a Managing Director of THL. Pursuant to the operative agreements among certain of the THL Funds, any securities issued to persons serving as directors of portfolio companies of the THL Funds, such as the Issuer, are to be held for the benefit of the THL Funds.