REZI · Resideo Technologies, Inc. · Insider Trading

The price reported in Column 4 is a weighted average price. The shares were purchased in multiple transactions at prices ranging from $20.65 to $20.69, inclusive. The Reporting Person undertakes to provide to Resideo Technologies, Inc., any securityholder thereof or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.

The price reported in Column 4 is a weighted average price. The shares were purchased in multiple transactions at prices ranging from $20.41 to $20.47, inclusive. The Reporting Person undertakes to provide to Resideo Technologies, Inc., any securityholder thereof or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.

The price reported in Column 4 is a weighted average price. The shares were purchased in multiple transactions at prices ranging from $20.44 to $20.63, inclusive. The Reporting Person undertakes to provide to Resideo Technologies, Inc., any securityholder thereof or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.

The reported securities represent restricted stock units ("RSUs") which each entitle the Reporting Person to receive a share of common stock ("Common Stock") of Resideo Technologies, Inc. (the "Issuer") on the earlier of August 13, 2027 or the date of the Issuer's 2027 annual meeting of stockholders, subject to the Reporting Person's service through such date. The Reporting Person holds the RSUs for the benefit of, and is obligated to transfer the shares of Common Stock received in settlement thereof to, CD&R Channel Holdings, L.P. or an affiliate thereof, and the Reporting Person therefore disclaims beneficial ownership of the reported securities.

On August 3, 2026, Resideo Technologies, Inc. (the "Issuer") completed a spin-off transaction (the "Spin-Off"). In connection with the Spin-Off, CD&R Channel Holdings, L.P. ("CD&R Holdings") exchanged 149,550 shares of Series A Cumulative Convertible Participating Preferred Stock (the "Series A Preferred Stock"), which were convertible into shares of the Issuer's common stock (the "common stock") at an initial conversion price per share of $26.92, for preferred stock in the spun-off company. The conversion price for the remaining 348,950 shares of Series A Preferred Stock held by CD&R Holdings was equitably adjusted to an initial conversion price per share of $18.844 and such shares of Series A Preferred Stock are convertible into 18,517,830 shares of common stock at an initial conversion price per share of $18.844, subject to anti-dilution adjustments, including in the event of any stock split, stock dividend, recapitalization or similar event.

The Series A Preferred Stock is convertible at any time at the option of the holder and has no expiration date.

The Issuer may, subject to the termination of a lock-up period applicable to the Reporting Persons, at its option, require conversion of all (but not less than all) of the outstanding shares of Series A Preferred Stock to shares of common stock if at any time the common stock trading price exceeds 200% of the then-effective conversion price for at least 20 out of 30 trailing trading days. The Series A Preferred Stock accrues dividends at a rate of 7.0% per annum, payable in cash or in-kind by adding the dividend to the accumulated amount of the Series A Preferred Stock, provided that, in the case of certain triggering events (including the Issuer's failure to pay dividends on the Series A Preferred Stock), the dividend rate shall become 10.0% per annum for so long as such triggering event remains in effect. Holders of Series A Preferred Stock are also entitled to receive certain dividends declared or paid on the common stock on an as-converted basis.

CD&R Investment Associates XII, Ltd. ("CD&R Holdings GP") as the general partner of CD&R Channel Holdings II, L.P. ("CD&R Holdings II"), which wholly owns CD&R Holdings, the direct holder of the reported securities, may be deemed to beneficially own the reported securities. Investment and voting decisions with respect to the reported securities are made by majority vote of an investment committee (the "Investment Committee") of limited partners of CD&R Associates XII, L.P. ("CD&R Associates"), which may be deemed to beneficially own the reported securities. Each of CD&R Holdings II, CD&R Holdings GP and CD&R Associates, as well as each member of the Investment Committee, expressly disclaims beneficial ownership of the reported securities, except to the extent of their respective pecuniary interest therein.

Issued under the 2018 Stock Plan for Non-Employee Directors of Resideo Technologies, Inc. in lieu of annual cash retainer fees and to be settled by issuance of shares of Common Stock in a lump sum following termination of service as a director. These stock units are fully vested upon grant.

Issued under the 2018 Stock Plan for Non-Employee Directors of Resideo Technologies, Inc. in lieu of annual cash retainer fees and to be settled by issuance of shares of Common Stock in a lump sum following termination of service as a director. These stock units are fully vested upon grant.

The reported securities represent restricted stock units ("RSUs") which each entitle the Reporting Person to receive a share of Common Stock on the earlier of June 3, 2027 or the date of the Issuer's 2027 annual meeting of stockholders, subject to the Reporting Person's service through such date. The Reporting Person holds the RSUs for the benefit of, and is obligated to transfer the shares of Common Stock received in settlement thereof to, CD&R Channel Holdings, L.P. or an affiliate thereof ("CDR"), and the Reporting Person therefore disclaims beneficial ownership of the reported securities.

The reported securities represent restricted stock units ("RSUs") which each entitle the Reporting Person to receive a share of Common Stock on the earlier of June 3, 2027 or the date of the Issuer's 2027 annual meeting of stockholders, subject to the Reporting Person's service through such date. The Reporting Person holds the RSUs for the benefit of, and is obligated to transfer the shares of Common Stock received in settlement thereof to, CD&R Channel Holdings, L.P. or an affiliate thereof ("CDR"), and the Reporting Person therefore disclaims beneficial ownership of the reported securities.

The reporting person's Form 3 filed on August 13, 2024 inadvertently understated the reporting person's direct holdings by 100 shares.

Issued under the 2018 Stock Plan for Non-Employee Directors of Resideo Technologies, Inc. in lieu of annual cash retainer fees and to be settled by issuance of shares of Common Stock in a lump sum following termination of service as a director. These stock units are fully vested upon grant.

Issued under the 2018 Stock Plan for Non-Employee Directors of Resideo Technologies, Inc. in lieu of annual cash retainer fees and to be settled by issuance of shares of Common Stock in a lump sum following termination of service as a director. These stock units are fully vested upon grant.

Includes 461 shares acquired pursuant to the Issuer's employee stock purchase plan.

Includes 523 shares acquired pursuant to the Issuer's employee stock purchase plan.