Compagnie de Saint Gobain : Summary table of financial authorizations in force on, and proposed to, the General Shareholders' Meeting of June 2, 2022

Compagnie de Saint-Gobain

A French Société anonyme with a share capital of €2,096,070,380 Registered office: Tour Saint-Gobain, 12, place de l'Iris, 92400 Courbevoie, France

Registry of Commerce and Companies of Nanterre n°542 039 532

Summary table of financial authorizations in force on the date of the General Shareholders' Meeting of June 2, 2022

Purpose of the resolution and types of securities concerned

Source (resolution number)

Authorization duration and expiration

Maximum par value of the capital increase

Issuances with preferential subscription right

Capital increase (common shares or securities giving access to shares in the Company or its subsidiaries) (A)

Capital increase by incorporation of premiums, reserves, profits and free allocation of shares to shareholders (B)

Issuance without preferential subscription right

Capital increase, by public offer, other than those referred to in Article L.411-2 of the French Monetary and Financial Code, with the option of granting a priority period for shareholders, by issuing common shares or securities giving access to the share capital of the Company or subsidiaries, or shares of the Company to which securities to be issued by subsidiaries would grant entitlement (C)

Capital increase, through a public offering referred to in paragraph 1 of Article L.411-2 of the French Monetary and Financial Code, by issuing common shares or securities giving access to the share capital of the Company or subsidiaries, or shares of the Company to which securities to be issued by subsidiaries would grant entitlement (D)

Capital increase (common shares or securities giving access to shares in the Company shares with shares as primary securities) in compensation for contributions in kind (E)

Issuances reserved for Group employees and Directors

Capital increase (equity securities) through the Group Savings Plan (F)

GSM 2021 18th resolutionGSM 2021 23rd resolution

2021 GSM 19th resolution

2021 GSM 20th resolution

2021 GSM 22nd resolution

26 months (August 2023)

26 months (August 2023)

26 months (August 2023)

26 months (August 2023)

26 months (August 2023)

2021 GSM 25th resolution

26 months (August 2023)

€426 million,excludingadjustments, i.e.

approximately 20% of the share capital(1)

(A)+(B)+(C)+(D)+(E)+(I) being limited to €426 million (the "Global Cap")(2)

€106 million, excluding adjustments, i.e. approximately 5% of the share capital

Included in the Global Cap(2)

€213 million (shares), excluding adjustments, i.e. approximately 10% of the share capital(1)

Included in the Global Cap

(C)+(D)+(E)+(I) million(2)

beinglimitedto

€213

€213 million (shares), excluding adjustments, i.e. approximately 10% of the share capital(1)

Allocation to the cap of (C), included in the Global Cap(2)

10% of the share capital, i.e. approximately €213 million excluding adjustments

Allocation to the cap of (C), included in the Global Cap(2)

€52 million, excluding adjustments, i.e. approximately 2.4% of the share capital(3)(4)

1

Purpose of the resolution and types of securities concerned

Source (resolution number)

Authorization duration and expiration

Maximum par value of the capital increase

1.5% of the share capital on the date of the 2019 GSM, i.e. approximately €33 million with a sub-cap of 10% of this limit of 1.5% for Executive corporate officers(2)

Allocation of stock options for new or existing shares (G)

Free allocation of existing shares (H)

Other

Option for complementary issuance in case of oversubscription of an issuance of common shares or securities giving access to the share capital with or without preferential subscription right (I)Determination of the issue price in the event of a capital increase without preferential subscription right through a public offer made pursuant to the 19th or 20th Resolutions of the 2021 GSM (J)

Share buyback program

Share buyback(6)Cancellation of shares

2019 GSM 23rd resolution

2019 GSM 24th resolution

2021 GSM 21st resolution

2021 GSM 24st resolution

2021 GSM 17th resolution

38 months (August 2022)

38 months (August 2022)

26 months (August 2023)

26 months (August 2023)

18 months (December 2022)

2021 GSM 26th resolution

26 months (August 2023)

(G)+(H) being limited to 1.5% of the share capital 1.2% of the share capital on the date of the 2019 GSM, i.e. approximately €26 million with a sub-cap of 10% of this limit of 1.2% for Executive corporate officers(5)

Allocation to the cap of (G)

For each issuance, legal limit of 15% of the initial issuance(1)

Allocation to the cap of (C) and/or included in the Global Cap depending on the initial issuance(2)

10% of the share capital per 12-month period(1)

Issuances completed pursuant to (C) or (D) depending on the type of capital increaseAllocation to the cap of (C), included in the Global Cap(2)

Features

10% of the total number of shares comprising the share capital at the date of the GSM(7)

Maximum purchase price per share: €80

10% of the share capital per 24-month period(8)

• (1) Maximum aggregate face value of debt securities giving access to the share capital that may be issued capped at €1.5 billion. Global cap applicable to Resolutions (A), (C), (D) and (I).

• (2) No use of the delegation of authority in 2021.

• (3) Recognition of the subscription of 5,562,855 shares in May 2021, such recognition being made by the Chairman and Chief Executive Officer having received a delegation of authority from the Board of Directors on November 26, 2020 on the basis of the twenty-second Resolution of the General Shareholders' Meeting of June 6, 2019 to implement a capital increase through the Group Savings Plan.

• (4) On November 25, 2021, the Board of Directors decided on the principle of a capital increase of up to 6,500,000 Saint-Gobain shares with a par value of €4 each, reserved for members of the Saint-Gobain Group employee savings plan (see the press release dated March 14, 2022, available onwww.saint-gobain.com). The indicative date for the completion of the capital increase is May 11, 2022.

• (5) Free allocation of 1,184,475 existing performance shares by the Board of Directors on November 25, 2021.

• (6) The objectives of the program are as follows: cancellation, delivery of shares upon exercise of the rights attached to securities giving access in any way to the allocation of shares in the Company or in the context of external growth, merger, demerger and contribution transactions, market animation under a liquidity agreement, allocation of free shares, granting of stock options, or sale of shares as part of a Company Savings Plan or other similar schemes, hedging against the potential dilutive impact of free share allocations, the granting of stock options and employee share subscriptions under the Company Savings Plan or other similar schemes, the implementation of any market practice that may become authorized by the French Financial Markets Authority (Autorité des marchés financiers - AMF) and, more generally, for any other transaction authorized under the relevant laws and regulations.

• (7) See Chapter 7, Section 1.3 of Saint-Gobain's 2021 Universal Registration Document, available onwww.saint-gobain.com for a description of the implementation of the share buyback program in 2021.

• (8) Cancellation of (i) 5,700,000 shares resulting in a reduction of the share capital by an aggregate face value of €22,800,000, decided by the Board of Directors on June 3, 2021, effective on June 11, 2021, and (ii) 8,543,174 shares resulting in a reduction of the share capital by an aggregate face value of €34,172,696, decided by the Board of Directors of November 25, 2021, effective November 30, 2021 (see Chapter 7, Section 1.3.1 of Saint-Gobain's 2021 Universal Registration Document, available onwww.saint-gobain.com).

Compagnie de Saint-Gobain

A French Société anonyme with a share capital of €2,096,070,380 Registered office: Tour Saint-Gobain, 12, place de l'Iris, 92400 Courbevoie, France

Registry of Commerce and Companies of Nanterre n°542 039 532

Summary table of financial authorizations submitted for approval to the

General Shareholders' Meeting convened to be held on June 2, 2022

Purpose of the resolution and type of securities concerned	Source (resolution number)	Authorization duration and expiration	Maximum par value of the capital increase
Issuances reserved for Group employees and Directors
Allocation of stock options for new or existing shares (A)	2022 AGM 17th resolution	38 months (August 2025)	1.5% of the share capital on the date of the 2022 AGM, i.e. approximately €31,5 million, with a sub-cap of 10% of this limit of 1.5% for Executive corporate officers. (A)+(B), limited to 1.5% of the share capital
Free allocation of existing performance shares (B)	2022 AGM 18th resolution	38 months (August 2025)	1.2% of the share capital on the date of the 2022 AGM, i.e. approximately €25 million with a sub-cap of 10% of this limit of 1.2% for Executive corporate officers (allocation to the sub-cap of (A) applicable to the Executive corporate officers) Allocation to the cap of (A)