OPTU

SEC source: 0000947871-19-000984 · ownership.xml · nonDerivative · entry 1

Bakker Gerrit Jan · CIK 0001743436 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 29,951

F1 · price: Represents the weighted average sales price of the shares sold ranging from a low of $27.00 to a high of $27.01 per share. The Reporting Person undertakes, upon request by the Commission staff, the Issuer or a security holder of the Issuer, to provide full information regarding the number of shares sold at each separate price.

SEC source: 0000947871-19-000952 · ownership.xml · derivative · entry 9

Next Alt S.a.r.l. · CIK 0001709662 · Director · 10% owner

Drahi Patrick · CIK 0001709689 · Director · 10% owner

A4 S.A. · CIK 0001709665 · Director

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: Not disclosed

Ownership: Indirect · CVC 3 B.V.

Disclosed balance after: 0

Underlying: Class A common stock · 6,290,292 shares

Expires not disclosed

F1 · derivative.exercise_price: CVC 3 B.V. ("CVC 3") holds partnership interests in Neptune Holding US Limited Partnership (the "Partnership") that consist of Class A Units and Class C Units, which in each case represent a contingent right to receive shares of Class A common stock of the Issuer in the discretion of Neptune Holding US GP LLC, which is controlled by the Issuer (together, the "Partnership Rights"). CVC 3 may, in its discretion, redeem the Class A Units at any time. The Issuer may cause the Partnership to, in its discretion, redeem the Class C Units at any time.

F3 · derivative.exercise_price: On December 7, 2019, CVC 3 agreed in lieu of redeeming the Class A Units to enter into an Assignment and Assumption Agreement with the Issuer, as approved by the Board of the Issuer, whereby CVC3 assigned all of its remaining Partnership Rights to the Issuer in exchange for Class A common stock of the Issuer, as reported on this Form 4 (the "Assignment"). The Assignment was exempt from the provisions of Section 16(b) of the Securities Exchange Act of 1934, as amended, pursuant to Rule 16b-3(d) and 16b-3(e) thereunder.

F1 · derivative.exercise_date: CVC 3 B.V. ("CVC 3") holds partnership interests in Neptune Holding US Limited Partnership (the "Partnership") that consist of Class A Units and Class C Units, which in each case represent a contingent right to receive shares of Class A common stock of the Issuer in the discretion of Neptune Holding US GP LLC, which is controlled by the Issuer (together, the "Partnership Rights"). CVC 3 may, in its discretion, redeem the Class A Units at any time. The Issuer may cause the Partnership to, in its discretion, redeem the Class C Units at any time.

F3 · derivative.exercise_date: On December 7, 2019, CVC 3 agreed in lieu of redeeming the Class A Units to enter into an Assignment and Assumption Agreement with the Issuer, as approved by the Board of the Issuer, whereby CVC3 assigned all of its remaining Partnership Rights to the Issuer in exchange for Class A common stock of the Issuer, as reported on this Form 4 (the "Assignment"). The Assignment was exempt from the provisions of Section 16(b) of the Securities Exchange Act of 1934, as amended, pursuant to Rule 16b-3(d) and 16b-3(e) thereunder.

F1 · derivative.expiration_date: CVC 3 B.V. ("CVC 3") holds partnership interests in Neptune Holding US Limited Partnership (the "Partnership") that consist of Class A Units and Class C Units, which in each case represent a contingent right to receive shares of Class A common stock of the Issuer in the discretion of Neptune Holding US GP LLC, which is controlled by the Issuer (together, the "Partnership Rights"). CVC 3 may, in its discretion, redeem the Class A Units at any time. The Issuer may cause the Partnership to, in its discretion, redeem the Class C Units at any time.

F3 · derivative.expiration_date: On December 7, 2019, CVC 3 agreed in lieu of redeeming the Class A Units to enter into an Assignment and Assumption Agreement with the Issuer, as approved by the Board of the Issuer, whereby CVC3 assigned all of its remaining Partnership Rights to the Issuer in exchange for Class A common stock of the Issuer, as reported on this Form 4 (the "Assignment"). The Assignment was exempt from the provisions of Section 16(b) of the Securities Exchange Act of 1934, as amended, pursuant to Rule 16b-3(d) and 16b-3(e) thereunder.

F1 · ownership.nature: CVC 3 B.V. ("CVC 3") holds partnership interests in Neptune Holding US Limited Partnership (the "Partnership") that consist of Class A Units and Class C Units, which in each case represent a contingent right to receive shares of Class A common stock of the Issuer in the discretion of Neptune Holding US GP LLC, which is controlled by the Issuer (together, the "Partnership Rights"). CVC 3 may, in its discretion, redeem the Class A Units at any time. The Issuer may cause the Partnership to, in its discretion, redeem the Class C Units at any time.

F4 · ownership.nature: Next Alt S.a r.l. ("Next Alt") is a personal holding company of Mr. Drahi, who is its controlling shareholder. As of the date of this report, Next Alt directly and indirectly owns 77.58% of the share capital and voting rights of Altice Europe N.V. Altice Europe N.V. maintains a one-tier board of four executive board members, one of whom is Mr. Drahi, and four non-executive board members. The executive board members are appointed by shareholders at the general meeting at the binding nomination of Next Alt. CVC 3 is wholly owned by Altice Europe N.V. Mr. Drahi, Next Alt and Altice Europe N.V. may each be deemed to beneficially own the shares of the Issuer owned by CVC 3.

F5 · ownership.nature: Mr. Drahi is the sole controlling shareholder of Uppernext S.C.S.p ("Uppernext"). As such, Mr. Drahi may be deemed to beneficially own shares of the Issuer held by Uppernext. A4 S.A., which is controlled by the family of Mr. Drahi, is an executive board member of Altice Europe N.V. Mr. Drahi is a director of the Issuer and Next Alt and A4 S.A. are parties to a stockholders agreement with the Issuer pursuant to which they have certain rights to appoint directors of the Issuer.

F6 · ownership.nature: Each Reporting Person disclaims beneficial ownership of all interests reported on this Form 4 except to the extent of such Reporting Person's pecuniary interests.

SEC source: 0000947871-19-000952 · ownership.xml · nonDerivative · entry 3

Next Alt S.a.r.l. · CIK 0001709662 · Director · 10% owner

Drahi Patrick · CIK 0001709689 · Director · 10% owner

A4 S.A. · CIK 0001709665 · Director

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: Not disclosed

Ownership: Indirect · CVC 3 B.V.

Disclosed balance after: 24,475,295

F1 · price: CVC 3 B.V. ("CVC 3") holds partnership interests in Neptune Holding US Limited Partnership (the "Partnership") that consist of Class A Units and Class C Units, which in each case represent a contingent right to receive shares of Class A common stock of the Issuer in the discretion of Neptune Holding US GP LLC, which is controlled by the Issuer (together, the "Partnership Rights"). CVC 3 may, in its discretion, redeem the Class A Units at any time. The Issuer may cause the Partnership to, in its discretion, redeem the Class C Units at any time.

F3 · price: On December 7, 2019, CVC 3 agreed in lieu of redeeming the Class A Units to enter into an Assignment and Assumption Agreement with the Issuer, as approved by the Board of the Issuer, whereby CVC3 assigned all of its remaining Partnership Rights to the Issuer in exchange for Class A common stock of the Issuer, as reported on this Form 4 (the "Assignment"). The Assignment was exempt from the provisions of Section 16(b) of the Securities Exchange Act of 1934, as amended, pursuant to Rule 16b-3(d) and 16b-3(e) thereunder.

F1 · ownership.nature: CVC 3 B.V. ("CVC 3") holds partnership interests in Neptune Holding US Limited Partnership (the "Partnership") that consist of Class A Units and Class C Units, which in each case represent a contingent right to receive shares of Class A common stock of the Issuer in the discretion of Neptune Holding US GP LLC, which is controlled by the Issuer (together, the "Partnership Rights"). CVC 3 may, in its discretion, redeem the Class A Units at any time. The Issuer may cause the Partnership to, in its discretion, redeem the Class C Units at any time.

F4 · ownership.nature: Next Alt S.a r.l. ("Next Alt") is a personal holding company of Mr. Drahi, who is its controlling shareholder. As of the date of this report, Next Alt directly and indirectly owns 77.58% of the share capital and voting rights of Altice Europe N.V. Altice Europe N.V. maintains a one-tier board of four executive board members, one of whom is Mr. Drahi, and four non-executive board members. The executive board members are appointed by shareholders at the general meeting at the binding nomination of Next Alt. CVC 3 is wholly owned by Altice Europe N.V. Mr. Drahi, Next Alt and Altice Europe N.V. may each be deemed to beneficially own the shares of the Issuer owned by CVC 3.

F5 · ownership.nature: Mr. Drahi is the sole controlling shareholder of Uppernext S.C.S.p ("Uppernext"). As such, Mr. Drahi may be deemed to beneficially own shares of the Issuer held by Uppernext. A4 S.A., which is controlled by the family of Mr. Drahi, is an executive board member of Altice Europe N.V. Mr. Drahi is a director of the Issuer and Next Alt and A4 S.A. are parties to a stockholders agreement with the Issuer pursuant to which they have certain rights to appoint directors of the Issuer.

F6 · ownership.nature: Each Reporting Person disclaims beneficial ownership of all interests reported on this Form 4 except to the extent of such Reporting Person's pecuniary interests.

SEC source: 0000947871-19-000952 · ownership.xml · derivative · entry 8

Next Alt S.a.r.l. · CIK 0001709662 · Director · 10% owner

Drahi Patrick · CIK 0001709689 · Director · 10% owner

A4 S.A. · CIK 0001709665 · Director

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: Not disclosed

Ownership: Indirect · CVC 3 B.V.

Disclosed balance after: 6,290,292

Underlying: Class A common stock · 4,281,205 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · derivative.exercise_price: CVC 3 B.V. ("CVC 3") holds partnership interests in Neptune Holding US Limited Partnership (the "Partnership") that consist of Class A Units and Class C Units, which in each case represent a contingent right to receive shares of Class A common stock of the Issuer in the discretion of Neptune Holding US GP LLC, which is controlled by the Issuer (together, the "Partnership Rights"). CVC 3 may, in its discretion, redeem the Class A Units at any time. The Issuer may cause the Partnership to, in its discretion, redeem the Class C Units at any time.

F2 · derivative.exercise_price: On December 6, 2019, Neptune Holding US GP LLC caused the Partnership to redeem the Class C Units, which were converted by their terms into Class A common stock of the Issuer, as reported on this Form 4 (the "Redemption"). As a result of the Redemption, Class A Units attributable to redeemed Class C Units were converted by their terms into Class A common stock of the Issuer.

F1 · derivative.exercise_date: CVC 3 B.V. ("CVC 3") holds partnership interests in Neptune Holding US Limited Partnership (the "Partnership") that consist of Class A Units and Class C Units, which in each case represent a contingent right to receive shares of Class A common stock of the Issuer in the discretion of Neptune Holding US GP LLC, which is controlled by the Issuer (together, the "Partnership Rights"). CVC 3 may, in its discretion, redeem the Class A Units at any time. The Issuer may cause the Partnership to, in its discretion, redeem the Class C Units at any time.

F2 · derivative.exercise_date: On December 6, 2019, Neptune Holding US GP LLC caused the Partnership to redeem the Class C Units, which were converted by their terms into Class A common stock of the Issuer, as reported on this Form 4 (the "Redemption"). As a result of the Redemption, Class A Units attributable to redeemed Class C Units were converted by their terms into Class A common stock of the Issuer.

F1 · derivative.expiration_date: CVC 3 B.V. ("CVC 3") holds partnership interests in Neptune Holding US Limited Partnership (the "Partnership") that consist of Class A Units and Class C Units, which in each case represent a contingent right to receive shares of Class A common stock of the Issuer in the discretion of Neptune Holding US GP LLC, which is controlled by the Issuer (together, the "Partnership Rights"). CVC 3 may, in its discretion, redeem the Class A Units at any time. The Issuer may cause the Partnership to, in its discretion, redeem the Class C Units at any time.

F2 · derivative.expiration_date: On December 6, 2019, Neptune Holding US GP LLC caused the Partnership to redeem the Class C Units, which were converted by their terms into Class A common stock of the Issuer, as reported on this Form 4 (the "Redemption"). As a result of the Redemption, Class A Units attributable to redeemed Class C Units were converted by their terms into Class A common stock of the Issuer.

F1 · ownership.nature: CVC 3 B.V. ("CVC 3") holds partnership interests in Neptune Holding US Limited Partnership (the "Partnership") that consist of Class A Units and Class C Units, which in each case represent a contingent right to receive shares of Class A common stock of the Issuer in the discretion of Neptune Holding US GP LLC, which is controlled by the Issuer (together, the "Partnership Rights"). CVC 3 may, in its discretion, redeem the Class A Units at any time. The Issuer may cause the Partnership to, in its discretion, redeem the Class C Units at any time.

F4 · ownership.nature: Next Alt S.a r.l. ("Next Alt") is a personal holding company of Mr. Drahi, who is its controlling shareholder. As of the date of this report, Next Alt directly and indirectly owns 77.58% of the share capital and voting rights of Altice Europe N.V. Altice Europe N.V. maintains a one-tier board of four executive board members, one of whom is Mr. Drahi, and four non-executive board members. The executive board members are appointed by shareholders at the general meeting at the binding nomination of Next Alt. CVC 3 is wholly owned by Altice Europe N.V. Mr. Drahi, Next Alt and Altice Europe N.V. may each be deemed to beneficially own the shares of the Issuer owned by CVC 3.

F5 · ownership.nature: Mr. Drahi is the sole controlling shareholder of Uppernext S.C.S.p ("Uppernext"). As such, Mr. Drahi may be deemed to beneficially own shares of the Issuer held by Uppernext. A4 S.A., which is controlled by the family of Mr. Drahi, is an executive board member of Altice Europe N.V. Mr. Drahi is a director of the Issuer and Next Alt and A4 S.A. are parties to a stockholders agreement with the Issuer pursuant to which they have certain rights to appoint directors of the Issuer.

F6 · ownership.nature: Each Reporting Person disclaims beneficial ownership of all interests reported on this Form 4 except to the extent of such Reporting Person's pecuniary interests.

SEC source: 0000947871-19-000952 · ownership.xml · derivative · entry 7

Next Alt S.a.r.l. · CIK 0001709662 · Director · 10% owner

Drahi Patrick · CIK 0001709689 · Director · 10% owner

A4 S.A. · CIK 0001709665 · Director

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: Not disclosed

Ownership: Indirect · CVC 3 B.V.

Disclosed balance after: 0

Underlying: Class A common stock · 1,806,232 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · derivative.exercise_price: CVC 3 B.V. ("CVC 3") holds partnership interests in Neptune Holding US Limited Partnership (the "Partnership") that consist of Class A Units and Class C Units, which in each case represent a contingent right to receive shares of Class A common stock of the Issuer in the discretion of Neptune Holding US GP LLC, which is controlled by the Issuer (together, the "Partnership Rights"). CVC 3 may, in its discretion, redeem the Class A Units at any time. The Issuer may cause the Partnership to, in its discretion, redeem the Class C Units at any time.

F2 · derivative.exercise_price: On December 6, 2019, Neptune Holding US GP LLC caused the Partnership to redeem the Class C Units, which were converted by their terms into Class A common stock of the Issuer, as reported on this Form 4 (the "Redemption"). As a result of the Redemption, Class A Units attributable to redeemed Class C Units were converted by their terms into Class A common stock of the Issuer.

F1 · derivative.exercise_date: CVC 3 B.V. ("CVC 3") holds partnership interests in Neptune Holding US Limited Partnership (the "Partnership") that consist of Class A Units and Class C Units, which in each case represent a contingent right to receive shares of Class A common stock of the Issuer in the discretion of Neptune Holding US GP LLC, which is controlled by the Issuer (together, the "Partnership Rights"). CVC 3 may, in its discretion, redeem the Class A Units at any time. The Issuer may cause the Partnership to, in its discretion, redeem the Class C Units at any time.

F2 · derivative.exercise_date: On December 6, 2019, Neptune Holding US GP LLC caused the Partnership to redeem the Class C Units, which were converted by their terms into Class A common stock of the Issuer, as reported on this Form 4 (the "Redemption"). As a result of the Redemption, Class A Units attributable to redeemed Class C Units were converted by their terms into Class A common stock of the Issuer.

F1 · derivative.expiration_date: CVC 3 B.V. ("CVC 3") holds partnership interests in Neptune Holding US Limited Partnership (the "Partnership") that consist of Class A Units and Class C Units, which in each case represent a contingent right to receive shares of Class A common stock of the Issuer in the discretion of Neptune Holding US GP LLC, which is controlled by the Issuer (together, the "Partnership Rights"). CVC 3 may, in its discretion, redeem the Class A Units at any time. The Issuer may cause the Partnership to, in its discretion, redeem the Class C Units at any time.

F2 · derivative.expiration_date: On December 6, 2019, Neptune Holding US GP LLC caused the Partnership to redeem the Class C Units, which were converted by their terms into Class A common stock of the Issuer, as reported on this Form 4 (the "Redemption"). As a result of the Redemption, Class A Units attributable to redeemed Class C Units were converted by their terms into Class A common stock of the Issuer.

F1 · ownership.nature: CVC 3 B.V. ("CVC 3") holds partnership interests in Neptune Holding US Limited Partnership (the "Partnership") that consist of Class A Units and Class C Units, which in each case represent a contingent right to receive shares of Class A common stock of the Issuer in the discretion of Neptune Holding US GP LLC, which is controlled by the Issuer (together, the "Partnership Rights"). CVC 3 may, in its discretion, redeem the Class A Units at any time. The Issuer may cause the Partnership to, in its discretion, redeem the Class C Units at any time.

F4 · ownership.nature: Next Alt S.a r.l. ("Next Alt") is a personal holding company of Mr. Drahi, who is its controlling shareholder. As of the date of this report, Next Alt directly and indirectly owns 77.58% of the share capital and voting rights of Altice Europe N.V. Altice Europe N.V. maintains a one-tier board of four executive board members, one of whom is Mr. Drahi, and four non-executive board members. The executive board members are appointed by shareholders at the general meeting at the binding nomination of Next Alt. CVC 3 is wholly owned by Altice Europe N.V. Mr. Drahi, Next Alt and Altice Europe N.V. may each be deemed to beneficially own the shares of the Issuer owned by CVC 3.

F5 · ownership.nature: Mr. Drahi is the sole controlling shareholder of Uppernext S.C.S.p ("Uppernext"). As such, Mr. Drahi may be deemed to beneficially own shares of the Issuer held by Uppernext. A4 S.A., which is controlled by the family of Mr. Drahi, is an executive board member of Altice Europe N.V. Mr. Drahi is a director of the Issuer and Next Alt and A4 S.A. are parties to a stockholders agreement with the Issuer pursuant to which they have certain rights to appoint directors of the Issuer.

F6 · ownership.nature: Each Reporting Person disclaims beneficial ownership of all interests reported on this Form 4 except to the extent of such Reporting Person's pecuniary interests.

SEC source: 0000947871-19-000952 · ownership.xml · nonDerivative · entry 2

Next Alt S.a.r.l. · CIK 0001709662 · Director · 10% owner

Drahi Patrick · CIK 0001709689 · Director · 10% owner

A4 S.A. · CIK 0001709665 · Director

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: Not disclosed

Ownership: Indirect · CVC 3 B.V.

Disclosed balance after: 18,185,003

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · price: CVC 3 B.V. ("CVC 3") holds partnership interests in Neptune Holding US Limited Partnership (the "Partnership") that consist of Class A Units and Class C Units, which in each case represent a contingent right to receive shares of Class A common stock of the Issuer in the discretion of Neptune Holding US GP LLC, which is controlled by the Issuer (together, the "Partnership Rights"). CVC 3 may, in its discretion, redeem the Class A Units at any time. The Issuer may cause the Partnership to, in its discretion, redeem the Class C Units at any time.

F2 · price: On December 6, 2019, Neptune Holding US GP LLC caused the Partnership to redeem the Class C Units, which were converted by their terms into Class A common stock of the Issuer, as reported on this Form 4 (the "Redemption"). As a result of the Redemption, Class A Units attributable to redeemed Class C Units were converted by their terms into Class A common stock of the Issuer.

F1 · ownership.nature: CVC 3 B.V. ("CVC 3") holds partnership interests in Neptune Holding US Limited Partnership (the "Partnership") that consist of Class A Units and Class C Units, which in each case represent a contingent right to receive shares of Class A common stock of the Issuer in the discretion of Neptune Holding US GP LLC, which is controlled by the Issuer (together, the "Partnership Rights"). CVC 3 may, in its discretion, redeem the Class A Units at any time. The Issuer may cause the Partnership to, in its discretion, redeem the Class C Units at any time.

F4 · ownership.nature: Next Alt S.a r.l. ("Next Alt") is a personal holding company of Mr. Drahi, who is its controlling shareholder. As of the date of this report, Next Alt directly and indirectly owns 77.58% of the share capital and voting rights of Altice Europe N.V. Altice Europe N.V. maintains a one-tier board of four executive board members, one of whom is Mr. Drahi, and four non-executive board members. The executive board members are appointed by shareholders at the general meeting at the binding nomination of Next Alt. CVC 3 is wholly owned by Altice Europe N.V. Mr. Drahi, Next Alt and Altice Europe N.V. may each be deemed to beneficially own the shares of the Issuer owned by CVC 3.

F5 · ownership.nature: Mr. Drahi is the sole controlling shareholder of Uppernext S.C.S.p ("Uppernext"). As such, Mr. Drahi may be deemed to beneficially own shares of the Issuer held by Uppernext. A4 S.A., which is controlled by the family of Mr. Drahi, is an executive board member of Altice Europe N.V. Mr. Drahi is a director of the Issuer and Next Alt and A4 S.A. are parties to a stockholders agreement with the Issuer pursuant to which they have certain rights to appoint directors of the Issuer.

F6 · ownership.nature: Each Reporting Person disclaims beneficial ownership of all interests reported on this Form 4 except to the extent of such Reporting Person's pecuniary interests.

SEC source: 0000947871-19-000952 · ownership.xml · nonDerivative · entry 1

Next Alt S.a.r.l. · CIK 0001709662 · Director · 10% owner

Drahi Patrick · CIK 0001709689 · Director · 10% owner

A4 S.A. · CIK 0001709665 · Director

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: Not disclosed

Ownership: Indirect · CVC 3 B.V.

Disclosed balance after: 13,903,798

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · price: CVC 3 B.V. ("CVC 3") holds partnership interests in Neptune Holding US Limited Partnership (the "Partnership") that consist of Class A Units and Class C Units, which in each case represent a contingent right to receive shares of Class A common stock of the Issuer in the discretion of Neptune Holding US GP LLC, which is controlled by the Issuer (together, the "Partnership Rights"). CVC 3 may, in its discretion, redeem the Class A Units at any time. The Issuer may cause the Partnership to, in its discretion, redeem the Class C Units at any time.

F2 · price: On December 6, 2019, Neptune Holding US GP LLC caused the Partnership to redeem the Class C Units, which were converted by their terms into Class A common stock of the Issuer, as reported on this Form 4 (the "Redemption"). As a result of the Redemption, Class A Units attributable to redeemed Class C Units were converted by their terms into Class A common stock of the Issuer.

F1 · ownership.nature: CVC 3 B.V. ("CVC 3") holds partnership interests in Neptune Holding US Limited Partnership (the "Partnership") that consist of Class A Units and Class C Units, which in each case represent a contingent right to receive shares of Class A common stock of the Issuer in the discretion of Neptune Holding US GP LLC, which is controlled by the Issuer (together, the "Partnership Rights"). CVC 3 may, in its discretion, redeem the Class A Units at any time. The Issuer may cause the Partnership to, in its discretion, redeem the Class C Units at any time.

F4 · ownership.nature: Next Alt S.a r.l. ("Next Alt") is a personal holding company of Mr. Drahi, who is its controlling shareholder. As of the date of this report, Next Alt directly and indirectly owns 77.58% of the share capital and voting rights of Altice Europe N.V. Altice Europe N.V. maintains a one-tier board of four executive board members, one of whom is Mr. Drahi, and four non-executive board members. The executive board members are appointed by shareholders at the general meeting at the binding nomination of Next Alt. CVC 3 is wholly owned by Altice Europe N.V. Mr. Drahi, Next Alt and Altice Europe N.V. may each be deemed to beneficially own the shares of the Issuer owned by CVC 3.

F5 · ownership.nature: Mr. Drahi is the sole controlling shareholder of Uppernext S.C.S.p ("Uppernext"). As such, Mr. Drahi may be deemed to beneficially own shares of the Issuer held by Uppernext. A4 S.A., which is controlled by the family of Mr. Drahi, is an executive board member of Altice Europe N.V. Mr. Drahi is a director of the Issuer and Next Alt and A4 S.A. are parties to a stockholders agreement with the Issuer pursuant to which they have certain rights to appoint directors of the Issuer.

F6 · ownership.nature: Each Reporting Person disclaims beneficial ownership of all interests reported on this Form 4 except to the extent of such Reporting Person's pecuniary interests.

SEC source: 0000947871-19-000821 · ownership.xml · derivative · entry 5

Next Alt S.a.r.l. · CIK 0001709662 · Director · 10% owner

Drahi Patrick · CIK 0001709689 · Director · 10% owner

A4 S.A. · CIK 0001709665 · Director

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: Not disclosed

Ownership: Indirect · CVC 3 B.V.

Disclosed balance after: 20,496,287

Underlying: Class A common stock · 18,064 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · derivative.exercise_price: Class A Units represent a contingent right to receive shares of Class A common stock of the Issuer in the discretion of Neptune Holding US GP LLC. At the time a portion of this derivative security was converted to Class A common stock, as reported on this Form 4, another portion of this derivative security was canceled for no consideration.

F1 · derivative.exercise_date: Class A Units represent a contingent right to receive shares of Class A common stock of the Issuer in the discretion of Neptune Holding US GP LLC. At the time a portion of this derivative security was converted to Class A common stock, as reported on this Form 4, another portion of this derivative security was canceled for no consideration.

F1 · derivative.expiration_date: Class A Units represent a contingent right to receive shares of Class A common stock of the Issuer in the discretion of Neptune Holding US GP LLC. At the time a portion of this derivative security was converted to Class A common stock, as reported on this Form 4, another portion of this derivative security was canceled for no consideration.

F2 · ownership.nature: Next Alt S.a r.l. ("Next Alt") is a personal holding company of Mr. Drahi, who is its controlling shareholder. As of the date of this report, Next Alt directly and indirectly owns 75.06% of the share capital and voting rights of Altice Europe N.V. Altice Europe N.V. maintains a one-tier board of four executive board members, one of whom is Mr. Drahi, and four non-executive board members. The executive board members are appointed by shareholders at the general meeting at the binding nomination of Next Alt. CVC 3 B.V. ("CVC 3") is wholly owned by Altice Europe N.V. Mr. Drahi, Next Alt and Altice Europe N.V. may each be deemed to beneficially own the shares of the Issuer owned by CVC 3.

F3 · ownership.nature: Mr. Drahi is the sole controlling shareholder of Uppernext S.C.S.p ("Uppernext"). As such, Mr. Drahi may be deemed to beneficially own shares of the Issuer held by Uppernext. A4 S.A., which is controlled by the family of Mr. Drahi, is an executive board member of Altice Europe N.V. Mr. Drahi is a director of the Issuer and Next Alt and A4 S.A. are parties to a stockholders agreement with the Issuer pursuant to which they have certain rights to appoint directors of the Issuer.

F4 · ownership.nature: Each Reporting Person disclaims beneficial ownership of all interests reported on this Form 4 except to the extent of such Reporting Person's pecuniary interests.

SEC source: 0000947871-19-000821 · ownership.xml · nonDerivative · entry 1

Next Alt S.a.r.l. · CIK 0001709662 · Director · 10% owner

Drahi Patrick · CIK 0001709689 · Director · 10% owner

A4 S.A. · CIK 0001709665 · Director

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: Not disclosed

Ownership: Indirect · CVC 3 B.V.

Disclosed balance after: 12,097,566

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · price: Class A Units represent a contingent right to receive shares of Class A common stock of the Issuer in the discretion of Neptune Holding US GP LLC. At the time a portion of this derivative security was converted to Class A common stock, as reported on this Form 4, another portion of this derivative security was canceled for no consideration.

F2 · ownership.nature: Next Alt S.a r.l. ("Next Alt") is a personal holding company of Mr. Drahi, who is its controlling shareholder. As of the date of this report, Next Alt directly and indirectly owns 75.06% of the share capital and voting rights of Altice Europe N.V. Altice Europe N.V. maintains a one-tier board of four executive board members, one of whom is Mr. Drahi, and four non-executive board members. The executive board members are appointed by shareholders at the general meeting at the binding nomination of Next Alt. CVC 3 B.V. ("CVC 3") is wholly owned by Altice Europe N.V. Mr. Drahi, Next Alt and Altice Europe N.V. may each be deemed to beneficially own the shares of the Issuer owned by CVC 3.

F3 · ownership.nature: Mr. Drahi is the sole controlling shareholder of Uppernext S.C.S.p ("Uppernext"). As such, Mr. Drahi may be deemed to beneficially own shares of the Issuer held by Uppernext. A4 S.A., which is controlled by the family of Mr. Drahi, is an executive board member of Altice Europe N.V. Mr. Drahi is a director of the Issuer and Next Alt and A4 S.A. are parties to a stockholders agreement with the Issuer pursuant to which they have certain rights to appoint directors of the Issuer.

F4 · ownership.nature: Each Reporting Person disclaims beneficial ownership of all interests reported on this Form 4 except to the extent of such Reporting Person's pecuniary interests.

SEC source: 0000947871-19-000807 · ownership.xml · derivative · entry 5

Next Alt S.a.r.l. · CIK 0001709662 · Director · 10% owner

Drahi Patrick · CIK 0001709689 · Director · 10% owner

A4 S.A. · CIK 0001709665 · Director

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: Not disclosed

Ownership: Indirect · CVC 3 B.V.

Disclosed balance after: 20,540,804

Underlying: Class A common stock · 102,633 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · derivative.exercise_price: Class A Units represent a contingent right to receive shares of Class A common stock of the Issuer in the discretion of Neptune Holding US GP LLC. At the time a portion of this derivative security was converted to Class A common stock, as reported on this Form 4, another portion of this derivative security was canceled for no consideration.

F1 · derivative.exercise_date: Class A Units represent a contingent right to receive shares of Class A common stock of the Issuer in the discretion of Neptune Holding US GP LLC. At the time a portion of this derivative security was converted to Class A common stock, as reported on this Form 4, another portion of this derivative security was canceled for no consideration.

F1 · derivative.expiration_date: Class A Units represent a contingent right to receive shares of Class A common stock of the Issuer in the discretion of Neptune Holding US GP LLC. At the time a portion of this derivative security was converted to Class A common stock, as reported on this Form 4, another portion of this derivative security was canceled for no consideration.

F2 · ownership.nature: Next Alt S.a r.l. ("Next Alt") is a personal holding company of Mr. Drahi, who is its controlling shareholder. As of the date of this report, Next Alt directly and indirectly owns 75.06% of the share capital and voting rights of Altice Europe N.V. Altice Europe N.V. maintains a one-tier board of four executive board members, one of whom is Mr. Drahi, and four non-executive board members. The executive board members are appointed by shareholders at the general meeting at the binding nomination of Next Alt. CVC 3 B.V. ("CVC 3") is wholly owned by Altice Europe N.V. Mr. Drahi, Next Alt and Altice Europe N.V. may each be deemed to beneficially own the shares of the Issuer owned by CVC 3.

F3 · ownership.nature: Mr. Drahi is the sole controlling shareholder of Uppernext S.C.S.p ("Uppernext"). As such, Mr. Drahi may be deemed to beneficially own shares of the Issuer held by Uppernext. A4 S.A., which is controlled by the family of Mr. Drahi, is an executive board member of Altice Europe N.V. Mr. Drahi is a director of the Issuer and Next Alt and A4 S.A. are parties to a stockholders agreement with the Issuer pursuant to which they have certain rights to appoint directors of the Issuer.

F4 · ownership.nature: Each Reporting Person disclaims beneficial ownership of all interests reported on this Form 4 except to the extent of such Reporting Person's pecuniary interests.

SEC source: 0000947871-19-000807 · ownership.xml · nonDerivative · entry 1

Next Alt S.a.r.l. · CIK 0001709662 · Director · 10% owner

Drahi Patrick · CIK 0001709689 · Director · 10% owner

A4 S.A. · CIK 0001709665 · Director

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: Not disclosed

Ownership: Indirect · CVC 3 B.V.

Disclosed balance after: 12,079,502

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · price: Class A Units represent a contingent right to receive shares of Class A common stock of the Issuer in the discretion of Neptune Holding US GP LLC. At the time a portion of this derivative security was converted to Class A common stock, as reported on this Form 4, another portion of this derivative security was canceled for no consideration.

F2 · ownership.nature: Next Alt S.a r.l. ("Next Alt") is a personal holding company of Mr. Drahi, who is its controlling shareholder. As of the date of this report, Next Alt directly and indirectly owns 75.06% of the share capital and voting rights of Altice Europe N.V. Altice Europe N.V. maintains a one-tier board of four executive board members, one of whom is Mr. Drahi, and four non-executive board members. The executive board members are appointed by shareholders at the general meeting at the binding nomination of Next Alt. CVC 3 B.V. ("CVC 3") is wholly owned by Altice Europe N.V. Mr. Drahi, Next Alt and Altice Europe N.V. may each be deemed to beneficially own the shares of the Issuer owned by CVC 3.

F3 · ownership.nature: Mr. Drahi is the sole controlling shareholder of Uppernext S.C.S.p ("Uppernext"). As such, Mr. Drahi may be deemed to beneficially own shares of the Issuer held by Uppernext. A4 S.A., which is controlled by the family of Mr. Drahi, is an executive board member of Altice Europe N.V. Mr. Drahi is a director of the Issuer and Next Alt and A4 S.A. are parties to a stockholders agreement with the Issuer pursuant to which they have certain rights to appoint directors of the Issuer.

F4 · ownership.nature: Each Reporting Person disclaims beneficial ownership of all interests reported on this Form 4 except to the extent of such Reporting Person's pecuniary interests.

SEC source: 0000947871-20-000059 · ownership.xml · nonDerivative · entry 1

Mullen Mark · CIK 0001708875 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 8,500

SEC source: 0000947871-19-000705 · ownership.xml · derivative · entry 7

Next Alt S.a.r.l. · CIK 0001709662 · Director · 10% owner

Drahi Patrick · CIK 0001709689 · Director · 10% owner

A4 S.A. · CIK 0001709665 · Director

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: Not disclosed

Ownership: Indirect · CVC 3 B.V.

Disclosed balance after: 15,545,098

Underlying: Class A common stock · 70,776 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F5 · derivative.exercise_price: Class C Units represent a contingent right to receive, following vesting, shares of Class A common stock of the Issuer in the discretion of Neptune Holding US GP LLC.

F6 · derivative.exercise_date: These Class C Units vest with CVC 3 upon the termination of employment of certain participants in the Neptune Management Limited Partnership Carry Unit Plan. At the time a portion of this derivative security was converted to Class A common stock, as reported on this Form 4, another portion of this derivative security was canceled for no consideration due to other distributions of Class A common stock by Neptune Holding US LP.

F6 · derivative.expiration_date: These Class C Units vest with CVC 3 upon the termination of employment of certain participants in the Neptune Management Limited Partnership Carry Unit Plan. At the time a portion of this derivative security was converted to Class A common stock, as reported on this Form 4, another portion of this derivative security was canceled for no consideration due to other distributions of Class A common stock by Neptune Holding US LP.

F2 · ownership.nature: Next Alt S.a r.l. ("Next Alt") is a personal holding company of Mr. Drahi, who is its controlling shareholder. As of the date of this report, Next Alt is the holder of 75.06% of the share capital and voting rights of Altice Europe N.V. Altice Europe N.V. maintains a one-tier board of four executive board members, one of whom is Mr. Drahi, and four non-executive board members. The executive board members are appointed by shareholders at the general meeting at the binding nomination of Next Alt. CVC 3 B.V. ("CVC 3") is wholly owned by Altice Europe N.V. Mr. Drahi, Next Alt and Altice Europe N.V. may each be deemed to beneficially own the shares of the Issuer owned by CVC 3.

F3 · ownership.nature: Mr. Drahi is the sole controlling shareholder of Uppernext S.C.S.p ("Uppernext"). As such, Mr. Drahi may be deemed to beneficially own shares of the Issuer held by Uppernext. A4 S.A., which is controlled by the family of Mr. Drahi, is an executive board member of Altice Europe N.V. Mr. Drahi is a director of the Issuer and Next Alt and A4 S.A. are parties to a stockholders agreement with the Issuer pursuant to which they have certain rights to appoint directors of the Issuer.

F4 · ownership.nature: Each Reporting Person disclaims beneficial ownership of all interests reported on this Form 4 except to the extent of such Reporting Person's pecuniary interests.

SEC source: 0000947871-19-000705 · ownership.xml · derivative · entry 6

Next Alt S.a.r.l. · CIK 0001709662 · Director · 10% owner

Drahi Patrick · CIK 0001709689 · Director · 10% owner

A4 S.A. · CIK 0001709665 · Director

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: Not disclosed

Ownership: Indirect · CVC 3 B.V.

Disclosed balance after: 20,802,222

Underlying: Class A common stock · 47,754 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · derivative.exercise_price: Class A Units represent a contingent right to receive shares of Class A common stock of the Issuer in the discretion of Neptune Holding US GP LLC. At the time a portion of this derivative security was converted to Class A common stock, as reported on this Form 4, another portion of this derivative security was canceled for no consideration due to other distributions of Class A common stock by Neptune Holding US Limited Partnership.

F1 · derivative.exercise_date: Class A Units represent a contingent right to receive shares of Class A common stock of the Issuer in the discretion of Neptune Holding US GP LLC. At the time a portion of this derivative security was converted to Class A common stock, as reported on this Form 4, another portion of this derivative security was canceled for no consideration due to other distributions of Class A common stock by Neptune Holding US Limited Partnership.

F1 · derivative.expiration_date: Class A Units represent a contingent right to receive shares of Class A common stock of the Issuer in the discretion of Neptune Holding US GP LLC. At the time a portion of this derivative security was converted to Class A common stock, as reported on this Form 4, another portion of this derivative security was canceled for no consideration due to other distributions of Class A common stock by Neptune Holding US Limited Partnership.

F2 · ownership.nature: Next Alt S.a r.l. ("Next Alt") is a personal holding company of Mr. Drahi, who is its controlling shareholder. As of the date of this report, Next Alt is the holder of 75.06% of the share capital and voting rights of Altice Europe N.V. Altice Europe N.V. maintains a one-tier board of four executive board members, one of whom is Mr. Drahi, and four non-executive board members. The executive board members are appointed by shareholders at the general meeting at the binding nomination of Next Alt. CVC 3 B.V. ("CVC 3") is wholly owned by Altice Europe N.V. Mr. Drahi, Next Alt and Altice Europe N.V. may each be deemed to beneficially own the shares of the Issuer owned by CVC 3.

F3 · ownership.nature: Mr. Drahi is the sole controlling shareholder of Uppernext S.C.S.p ("Uppernext"). As such, Mr. Drahi may be deemed to beneficially own shares of the Issuer held by Uppernext. A4 S.A., which is controlled by the family of Mr. Drahi, is an executive board member of Altice Europe N.V. Mr. Drahi is a director of the Issuer and Next Alt and A4 S.A. are parties to a stockholders agreement with the Issuer pursuant to which they have certain rights to appoint directors of the Issuer.

F4 · ownership.nature: Each Reporting Person disclaims beneficial ownership of all interests reported on this Form 4 except to the extent of such Reporting Person's pecuniary interests.

SEC source: 0000947871-19-000705 · ownership.xml · nonDerivative · entry 2

Next Alt S.a.r.l. · CIK 0001709662 · Director · 10% owner

Drahi Patrick · CIK 0001709689 · Director · 10% owner

A4 S.A. · CIK 0001709665 · Director

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: Not disclosed

Ownership: Indirect · CVC 3 B.V.

Disclosed balance after: 11,976,869

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F5 · price: Class C Units represent a contingent right to receive, following vesting, shares of Class A common stock of the Issuer in the discretion of Neptune Holding US GP LLC.

F2 · ownership.nature: Next Alt S.a r.l. ("Next Alt") is a personal holding company of Mr. Drahi, who is its controlling shareholder. As of the date of this report, Next Alt is the holder of 75.06% of the share capital and voting rights of Altice Europe N.V. Altice Europe N.V. maintains a one-tier board of four executive board members, one of whom is Mr. Drahi, and four non-executive board members. The executive board members are appointed by shareholders at the general meeting at the binding nomination of Next Alt. CVC 3 B.V. ("CVC 3") is wholly owned by Altice Europe N.V. Mr. Drahi, Next Alt and Altice Europe N.V. may each be deemed to beneficially own the shares of the Issuer owned by CVC 3.

F3 · ownership.nature: Mr. Drahi is the sole controlling shareholder of Uppernext S.C.S.p ("Uppernext"). As such, Mr. Drahi may be deemed to beneficially own shares of the Issuer held by Uppernext. A4 S.A., which is controlled by the family of Mr. Drahi, is an executive board member of Altice Europe N.V. Mr. Drahi is a director of the Issuer and Next Alt and A4 S.A. are parties to a stockholders agreement with the Issuer pursuant to which they have certain rights to appoint directors of the Issuer.

F4 · ownership.nature: Each Reporting Person disclaims beneficial ownership of all interests reported on this Form 4 except to the extent of such Reporting Person's pecuniary interests.

SEC source: 0000947871-19-000705 · ownership.xml · nonDerivative · entry 1

Next Alt S.a.r.l. · CIK 0001709662 · Director · 10% owner

Drahi Patrick · CIK 0001709689 · Director · 10% owner

A4 S.A. · CIK 0001709665 · Director

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: Not disclosed

Ownership: Indirect · CVC 3 B.V.

Disclosed balance after: 11,906,093

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · price: Class A Units represent a contingent right to receive shares of Class A common stock of the Issuer in the discretion of Neptune Holding US GP LLC. At the time a portion of this derivative security was converted to Class A common stock, as reported on this Form 4, another portion of this derivative security was canceled for no consideration due to other distributions of Class A common stock by Neptune Holding US Limited Partnership.

F2 · ownership.nature: Next Alt S.a r.l. ("Next Alt") is a personal holding company of Mr. Drahi, who is its controlling shareholder. As of the date of this report, Next Alt is the holder of 75.06% of the share capital and voting rights of Altice Europe N.V. Altice Europe N.V. maintains a one-tier board of four executive board members, one of whom is Mr. Drahi, and four non-executive board members. The executive board members are appointed by shareholders at the general meeting at the binding nomination of Next Alt. CVC 3 B.V. ("CVC 3") is wholly owned by Altice Europe N.V. Mr. Drahi, Next Alt and Altice Europe N.V. may each be deemed to beneficially own the shares of the Issuer owned by CVC 3.

F3 · ownership.nature: Mr. Drahi is the sole controlling shareholder of Uppernext S.C.S.p ("Uppernext"). As such, Mr. Drahi may be deemed to beneficially own shares of the Issuer held by Uppernext. A4 S.A., which is controlled by the family of Mr. Drahi, is an executive board member of Altice Europe N.V. Mr. Drahi is a director of the Issuer and Next Alt and A4 S.A. are parties to a stockholders agreement with the Issuer pursuant to which they have certain rights to appoint directors of the Issuer.

F4 · ownership.nature: Each Reporting Person disclaims beneficial ownership of all interests reported on this Form 4 except to the extent of such Reporting Person's pecuniary interests.

SEC source: 0000947871-19-000691 · ownership.xml · derivative · entry 1

Stewart Charles · CIK 0001708800 · Director · Chief Financial Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 350,000

Underlying: Class A common stock · 350,000 shares

Expires not disclosed

F1 · derivative.exercise_price: On September 19, 2019, the reporting person entered into a Variable Prepaid Forward Transaction (the "Transaction") with an unaffiliated bank (the "Bank") relating to 350,000 shares of Class A common stock of the Issuer ("Shares").

F2 · derivative.exercise_price: On the settlement date, the reporting person will be obligated to deliver to the Bank a number of Shares determined as follows (or, at the reporting person's election, an equivalent amount in cash): (a) if the closing price per share on September 19, 2022 (the "Settlement Price") is less than $29.95 (the "Floor Price"), 350,000 Shares (the "Number of Shares"); (b) if the Settlement Price is greater than the Floor Price but less than or equal to $37.44 (the "Cap Price"), the Number of Shares multiplied by the Floor Price divided by the Settlement Price; and (c) if the Settlement Price is greater than the Cap Price, the Number of Shares multiplied by (1 - ((Forward Cap Price - Forward Floor Price), divided by the Settlement Price)).

F3 · derivative.exercise_price: In exchange for assuming this obligation, the reporting person received a cash payment of $9,173,570 as of the date of entering into the Transaction. The reporting person pledged 350,000 Shares (the "Pledged Shares") to the Bank to secure its obligations under the Transaction. The reporting person retained voting rights in the Pledged Shares during the term of the pledge, but the reporting person is obligated to share with the Bank certain economic benefits of dividends paid during the term of the pledge.

F1 · price: On September 19, 2019, the reporting person entered into a Variable Prepaid Forward Transaction (the "Transaction") with an unaffiliated bank (the "Bank") relating to 350,000 shares of Class A common stock of the Issuer ("Shares").

F2 · price: On the settlement date, the reporting person will be obligated to deliver to the Bank a number of Shares determined as follows (or, at the reporting person's election, an equivalent amount in cash): (a) if the closing price per share on September 19, 2022 (the "Settlement Price") is less than $29.95 (the "Floor Price"), 350,000 Shares (the "Number of Shares"); (b) if the Settlement Price is greater than the Floor Price but less than or equal to $37.44 (the "Cap Price"), the Number of Shares multiplied by the Floor Price divided by the Settlement Price; and (c) if the Settlement Price is greater than the Cap Price, the Number of Shares multiplied by (1 - ((Forward Cap Price - Forward Floor Price), divided by the Settlement Price)).

F3 · price: In exchange for assuming this obligation, the reporting person received a cash payment of $9,173,570 as of the date of entering into the Transaction. The reporting person pledged 350,000 Shares (the "Pledged Shares") to the Bank to secure its obligations under the Transaction. The reporting person retained voting rights in the Pledged Shares during the term of the pledge, but the reporting person is obligated to share with the Bank certain economic benefits of dividends paid during the term of the pledge.

F1 · derivative.exercise_date: On September 19, 2019, the reporting person entered into a Variable Prepaid Forward Transaction (the "Transaction") with an unaffiliated bank (the "Bank") relating to 350,000 shares of Class A common stock of the Issuer ("Shares").

F2 · derivative.exercise_date: On the settlement date, the reporting person will be obligated to deliver to the Bank a number of Shares determined as follows (or, at the reporting person's election, an equivalent amount in cash): (a) if the closing price per share on September 19, 2022 (the "Settlement Price") is less than $29.95 (the "Floor Price"), 350,000 Shares (the "Number of Shares"); (b) if the Settlement Price is greater than the Floor Price but less than or equal to $37.44 (the "Cap Price"), the Number of Shares multiplied by the Floor Price divided by the Settlement Price; and (c) if the Settlement Price is greater than the Cap Price, the Number of Shares multiplied by (1 - ((Forward Cap Price - Forward Floor Price), divided by the Settlement Price)).

F3 · derivative.exercise_date: In exchange for assuming this obligation, the reporting person received a cash payment of $9,173,570 as of the date of entering into the Transaction. The reporting person pledged 350,000 Shares (the "Pledged Shares") to the Bank to secure its obligations under the Transaction. The reporting person retained voting rights in the Pledged Shares during the term of the pledge, but the reporting person is obligated to share with the Bank certain economic benefits of dividends paid during the term of the pledge.

F1 · derivative.expiration_date: On September 19, 2019, the reporting person entered into a Variable Prepaid Forward Transaction (the "Transaction") with an unaffiliated bank (the "Bank") relating to 350,000 shares of Class A common stock of the Issuer ("Shares").

F2 · derivative.expiration_date: On the settlement date, the reporting person will be obligated to deliver to the Bank a number of Shares determined as follows (or, at the reporting person's election, an equivalent amount in cash): (a) if the closing price per share on September 19, 2022 (the "Settlement Price") is less than $29.95 (the "Floor Price"), 350,000 Shares (the "Number of Shares"); (b) if the Settlement Price is greater than the Floor Price but less than or equal to $37.44 (the "Cap Price"), the Number of Shares multiplied by the Floor Price divided by the Settlement Price; and (c) if the Settlement Price is greater than the Cap Price, the Number of Shares multiplied by (1 - ((Forward Cap Price - Forward Floor Price), divided by the Settlement Price)).

F3 · derivative.expiration_date: In exchange for assuming this obligation, the reporting person received a cash payment of $9,173,570 as of the date of entering into the Transaction. The reporting person pledged 350,000 Shares (the "Pledged Shares") to the Bank to secure its obligations under the Transaction. The reporting person retained voting rights in the Pledged Shares during the term of the pledge, but the reporting person is obligated to share with the Bank certain economic benefits of dividends paid during the term of the pledge.

SEC source: 0000947871-19-000696 · ownership.xml · derivative · entry 5

Next Alt S.a.r.l. · CIK 0001709662 · Director · 10% owner

Drahi Patrick · CIK 0001709689 · Director · 10% owner

A4 S.A. · CIK 0001709665 · Director

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: Not disclosed

Ownership: Indirect · CVC 3 B.V.

Disclosed balance after: 20,920,752

Underlying: Class A common stock · 35,544 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · derivative.exercise_price: Class A Units represent a contingent right to receive shares of Class A common stock of the Issuer in the discretion of Neptune Holding US GP LLC. At the time a portion of this derivative security was converted to Class A common stock, as reported on this Form 4, another portion of this derivative security was canceled for no consideration due to other distributions of Class A common stock by Neptune Holding US Limited Partnership.

F1 · derivative.exercise_date: Class A Units represent a contingent right to receive shares of Class A common stock of the Issuer in the discretion of Neptune Holding US GP LLC. At the time a portion of this derivative security was converted to Class A common stock, as reported on this Form 4, another portion of this derivative security was canceled for no consideration due to other distributions of Class A common stock by Neptune Holding US Limited Partnership.

F1 · derivative.expiration_date: Class A Units represent a contingent right to receive shares of Class A common stock of the Issuer in the discretion of Neptune Holding US GP LLC. At the time a portion of this derivative security was converted to Class A common stock, as reported on this Form 4, another portion of this derivative security was canceled for no consideration due to other distributions of Class A common stock by Neptune Holding US Limited Partnership.

F2 · ownership.nature: Next Alt S.a r.l. ("Next Alt") is a personal holding company of Mr. Drahi, who is its controlling shareholder. As of the date of this report, Next Alt is the holder of 75.06% of the share capital and voting rights of Altice Europe N.V. Altice Europe N.V. maintains a one-tier board of four executive board members, one of whom is Mr. Drahi, and four non-executive board members. The executive board members are appointed by shareholders at the general meeting at the binding nomination of Next Alt. CVC 3 B.V. ("CVC 3") is wholly owned by Altice Europe N.V. Mr. Drahi, Next Alt and Altice Europe N.V. may each be deemed to beneficially own the shares of the Issuer owned by CVC 3.

F3 · ownership.nature: Mr. Drahi is the sole controlling shareholder of Uppernext S.C.S.p ("Uppernext"). As such, Mr. Drahi may be deemed to beneficially own shares of the Issuer held by Uppernext. A4 S.A., which is controlled by the family of Mr. Drahi, is an executive board member of Altice Europe N.V. Mr. Drahi is a director of the Issuer and Next Alt and A4 S.A. are parties to a stockholders agreement with the Issuer pursuant to which they have certain rights to appoint directors of the Issuer.

F4 · ownership.nature: Each Reporting Person disclaims beneficial ownership of all interests reported on this Form 4 except to the extent of such Reporting Person's pecuniary interests.

SEC source: 0000947871-19-000696 · ownership.xml · nonDerivative · entry 1

Next Alt S.a.r.l. · CIK 0001709662 · Director · 10% owner

Drahi Patrick · CIK 0001709689 · Director · 10% owner

A4 S.A. · CIK 0001709665 · Director

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: Not disclosed

Ownership: Indirect · CVC 3 B.V.

Disclosed balance after: 11,858,339

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · price: Class A Units represent a contingent right to receive shares of Class A common stock of the Issuer in the discretion of Neptune Holding US GP LLC. At the time a portion of this derivative security was converted to Class A common stock, as reported on this Form 4, another portion of this derivative security was canceled for no consideration due to other distributions of Class A common stock by Neptune Holding US Limited Partnership.

F2 · ownership.nature: Next Alt S.a r.l. ("Next Alt") is a personal holding company of Mr. Drahi, who is its controlling shareholder. As of the date of this report, Next Alt is the holder of 75.06% of the share capital and voting rights of Altice Europe N.V. Altice Europe N.V. maintains a one-tier board of four executive board members, one of whom is Mr. Drahi, and four non-executive board members. The executive board members are appointed by shareholders at the general meeting at the binding nomination of Next Alt. CVC 3 B.V. ("CVC 3") is wholly owned by Altice Europe N.V. Mr. Drahi, Next Alt and Altice Europe N.V. may each be deemed to beneficially own the shares of the Issuer owned by CVC 3.

F3 · ownership.nature: Mr. Drahi is the sole controlling shareholder of Uppernext S.C.S.p ("Uppernext"). As such, Mr. Drahi may be deemed to beneficially own shares of the Issuer held by Uppernext. A4 S.A., which is controlled by the family of Mr. Drahi, is an executive board member of Altice Europe N.V. Mr. Drahi is a director of the Issuer and Next Alt and A4 S.A. are parties to a stockholders agreement with the Issuer pursuant to which they have certain rights to appoint directors of the Issuer.

F4 · ownership.nature: Each Reporting Person disclaims beneficial ownership of all interests reported on this Form 4 except to the extent of such Reporting Person's pecuniary interests.

SEC source: 0000947871-19-000606 · ownership.xml · nonDerivative · entry 2

Next Alt S.a.r.l. · CIK 0001709662 · Director · 10% owner

Drahi Patrick · CIK 0001709689 · Director · 10% owner

A4 S.A. · CIK 0001709665 · Director

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 47,369,305

SEC source: 0000947871-19-000582 · ownership.xml · nonDerivative · entry 1

Olsen Michael · CIK 0001773608 · Acting Gen. Counsel & Secy.

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 75,355

F1 · price: Represents the weighted average sales price of the shares sold ranging from a low of $27.03 to a high of $27.05 per share. The Reporting Person undertakes, upon request by the Commission staff, the Issuer or a security holder of the Issuer, to provide full information regarding the number of shares sold at each separate price.

SEC source: 0000947871-19-000556 · ownership.xml · derivative · entry 5

Next Alt S.a.r.l. · CIK 0001709662 · Director · 10% owner

Drahi Patrick · CIK 0001709689 · Director · 10% owner

A4 S.A. · CIK 0001709665 · Director

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: Not disclosed

Ownership: Indirect · CVC 3 B.V.

Disclosed balance after: 21,009,373

Underlying: Class A common stock · 60,489 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · derivative.exercise_price: Class A Units represent a contingent right to receive shares of Class A common stock of the Issuer in the discretion of Neptune Holding US GP LLC. At the time a portion of this derivative security was converted to Class A common stock, as reported on this Form 4, another portion of this derivative security was canceled for no consideration due to other distributions of Class A common stock by Neptune Holding US Limited Partnership.

F1 · derivative.exercise_date: Class A Units represent a contingent right to receive shares of Class A common stock of the Issuer in the discretion of Neptune Holding US GP LLC. At the time a portion of this derivative security was converted to Class A common stock, as reported on this Form 4, another portion of this derivative security was canceled for no consideration due to other distributions of Class A common stock by Neptune Holding US Limited Partnership.

F1 · derivative.expiration_date: Class A Units represent a contingent right to receive shares of Class A common stock of the Issuer in the discretion of Neptune Holding US GP LLC. At the time a portion of this derivative security was converted to Class A common stock, as reported on this Form 4, another portion of this derivative security was canceled for no consideration due to other distributions of Class A common stock by Neptune Holding US Limited Partnership.

F2 · ownership.nature: Next Alt S.a r.l. ("Next Alt") is a personal holding company of Mr. Drahi, who is its controlling shareholder. As of the date of this report, Next Alt is the holder of 75.06% of the share capital and voting rights of Altice Europe N.V. Altice Europe N.V. maintains a one-tier board of four executive board members, one of whom is Mr. Drahi, and four non-executive board members. The executive board members are appointed by shareholders at the general meeting at the binding nomination of Next Alt. CVC 3 B.V. ("CVC 3") is wholly owned by Altice Europe N.V. Mr. Drahi, Next Alt and Altice Europe N.V. may each be deemed to beneficially own the shares of the Issuer owned by CVC 3.

F3 · ownership.nature: Mr. Drahi is the sole controlling shareholder of Uppernext S.C.S.p ("Uppernext"). As such, Mr. Drahi may be deemed to beneficially own shares of the Issuer held by Uppernext. A4 S.A., which is controlled by the family of Mr. Drahi, is an executive board member of Altice Europe N.V. Mr. Drahi is a director of the Issuer and Next Alt and A4 S.A. are parties to a stockholders agreement with the Issuer pursuant to which they have certain rights to appoint directors of the Issuer.

F4 · ownership.nature: Each Reporting Person disclaims beneficial ownership of all interests reported on this Form 4 except to the extent of such Reporting Person's pecuniary interests.

SEC source: 0000947871-19-000556 · ownership.xml · nonDerivative · entry 1

Next Alt S.a.r.l. · CIK 0001709662 · Director · 10% owner

Drahi Patrick · CIK 0001709689 · Director · 10% owner

A4 S.A. · CIK 0001709665 · Director

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: Not disclosed

Ownership: Indirect · CVC 3 B.V.

Disclosed balance after: 11,822,795

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · price: Class A Units represent a contingent right to receive shares of Class A common stock of the Issuer in the discretion of Neptune Holding US GP LLC. At the time a portion of this derivative security was converted to Class A common stock, as reported on this Form 4, another portion of this derivative security was canceled for no consideration due to other distributions of Class A common stock by Neptune Holding US Limited Partnership.

F2 · ownership.nature: Next Alt S.a r.l. ("Next Alt") is a personal holding company of Mr. Drahi, who is its controlling shareholder. As of the date of this report, Next Alt is the holder of 75.06% of the share capital and voting rights of Altice Europe N.V. Altice Europe N.V. maintains a one-tier board of four executive board members, one of whom is Mr. Drahi, and four non-executive board members. The executive board members are appointed by shareholders at the general meeting at the binding nomination of Next Alt. CVC 3 B.V. ("CVC 3") is wholly owned by Altice Europe N.V. Mr. Drahi, Next Alt and Altice Europe N.V. may each be deemed to beneficially own the shares of the Issuer owned by CVC 3.

F3 · ownership.nature: Mr. Drahi is the sole controlling shareholder of Uppernext S.C.S.p ("Uppernext"). As such, Mr. Drahi may be deemed to beneficially own shares of the Issuer held by Uppernext. A4 S.A., which is controlled by the family of Mr. Drahi, is an executive board member of Altice Europe N.V. Mr. Drahi is a director of the Issuer and Next Alt and A4 S.A. are parties to a stockholders agreement with the Issuer pursuant to which they have certain rights to appoint directors of the Issuer.

F4 · ownership.nature: Each Reporting Person disclaims beneficial ownership of all interests reported on this Form 4 except to the extent of such Reporting Person's pecuniary interests.

SEC source: 0000947871-19-000500 · ownership.xml · derivative · entry 5

Next Alt S.a.r.l. · CIK 0001709662 · Director · 10% owner

Drahi Patrick · CIK 0001709689 · Director · 10% owner

A4 S.A. · CIK 0001709665 · Director

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: Not disclosed

Ownership: Indirect · CVC 3 B.V.

Disclosed balance after: 21,163,230

Underlying: Class A common stock · 36,474 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · derivative.exercise_price: Class A Units represent a contingent right to receive shares of Class A common stock of the Issuer in the discretion of Neptune Holding US GP LLC. At the time a portion of this derivative security was converted to Class A common stock, as reported on this Form 4, another portion of this derivative security was canceled for no consideration due to other distributions of Class A common stock by Neptune Holding US Limited Partnership.

F1 · derivative.exercise_date: Class A Units represent a contingent right to receive shares of Class A common stock of the Issuer in the discretion of Neptune Holding US GP LLC. At the time a portion of this derivative security was converted to Class A common stock, as reported on this Form 4, another portion of this derivative security was canceled for no consideration due to other distributions of Class A common stock by Neptune Holding US Limited Partnership.

F1 · derivative.expiration_date: Class A Units represent a contingent right to receive shares of Class A common stock of the Issuer in the discretion of Neptune Holding US GP LLC. At the time a portion of this derivative security was converted to Class A common stock, as reported on this Form 4, another portion of this derivative security was canceled for no consideration due to other distributions of Class A common stock by Neptune Holding US Limited Partnership.

F2 · ownership.nature: Next Alt S.a r.l. ("Next Alt") is a personal holding company of Mr. Drahi, who is its controlling shareholder. As of the date of this report, Next Alt is the holder of 75.06% of the share capital and voting rights of Altice Europe N.V. Altice Europe N.V. maintains a one-tier board of four executive board members, one of whom is Mr. Drahi, and four non-executive board members. The executive board members are appointed by shareholders at the general meeting at the binding nomination of Next Alt. CVC 3 B.V. ("CVC 3") is wholly owned by Altice Europe N.V. Mr. Drahi, Next Alt and Altice Europe N.V. may each be deemed to beneficially own the shares of the Issuer owned by CVC 3.

F3 · ownership.nature: Mr. Drahi is the sole controlling shareholder of Uppernext S.C.S.p ("Uppernext"). As such, Mr. Drahi may be deemed to beneficially own shares of the Issuer held by Uppernext. A4 S.A., which is controlled by the family of Mr. Drahi, is an executive board member of Altice Europe N.V. Mr. Drahi is a director of the Issuer and Next Alt and A4 S.A. are parties to a stockholders agreement with the Issuer pursuant to which they have certain rights to appoint directors of the Issuer.

F4 · ownership.nature: Each Reporting Person disclaims beneficial ownership of all interests reported on this Form 4 except to the extent of such Reporting Person's pecuniary interests.

SEC source: 0000947871-19-000500 · ownership.xml · nonDerivative · entry 1

Next Alt S.a.r.l. · CIK 0001709662 · Director · 10% owner

Drahi Patrick · CIK 0001709689 · Director · 10% owner

A4 S.A. · CIK 0001709665 · Director

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: Not disclosed

Ownership: Indirect · CVC 3 B.V.

Disclosed balance after: 11,762,306

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · price: Class A Units represent a contingent right to receive shares of Class A common stock of the Issuer in the discretion of Neptune Holding US GP LLC. At the time a portion of this derivative security was converted to Class A common stock, as reported on this Form 4, another portion of this derivative security was canceled for no consideration due to other distributions of Class A common stock by Neptune Holding US Limited Partnership.

F2 · ownership.nature: Next Alt S.a r.l. ("Next Alt") is a personal holding company of Mr. Drahi, who is its controlling shareholder. As of the date of this report, Next Alt is the holder of 75.06% of the share capital and voting rights of Altice Europe N.V. Altice Europe N.V. maintains a one-tier board of four executive board members, one of whom is Mr. Drahi, and four non-executive board members. The executive board members are appointed by shareholders at the general meeting at the binding nomination of Next Alt. CVC 3 B.V. ("CVC 3") is wholly owned by Altice Europe N.V. Mr. Drahi, Next Alt and Altice Europe N.V. may each be deemed to beneficially own the shares of the Issuer owned by CVC 3.

F3 · ownership.nature: Mr. Drahi is the sole controlling shareholder of Uppernext S.C.S.p ("Uppernext"). As such, Mr. Drahi may be deemed to beneficially own shares of the Issuer held by Uppernext. A4 S.A., which is controlled by the family of Mr. Drahi, is an executive board member of Altice Europe N.V. Mr. Drahi is a director of the Issuer and Next Alt and A4 S.A. are parties to a stockholders agreement with the Issuer pursuant to which they have certain rights to appoint directors of the Issuer.

F4 · ownership.nature: Each Reporting Person disclaims beneficial ownership of all interests reported on this Form 4 except to the extent of such Reporting Person's pecuniary interests.

SEC source: 0000947871-19-000476 · ownership.xml · derivative · entry 1

Schmidt Colleen · CIK 0001769422 · EVP Human Resource

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 83,052

Underlying: Class A common stock · 83,052 shares

Expires 2029-06-26

SEC source: 0000947871-19-000464 · ownership.xml · derivative · entry 7

Next Alt S.a.r.l. · CIK 0001709662 · Director · 10% owner

Drahi Patrick · CIK 0001709689 · Director · 10% owner

A4 S.A. · CIK 0001709665 · Director

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: Not disclosed

Ownership: Indirect · CVC 3 B.V.

Disclosed balance after: 15,809,913

Underlying: Class A common stock · 809,061 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F5 · derivative.exercise_price: Class C Units represent a contingent right to receive, following vesting, shares of Class A common stock of the Issuer in the discretion of Neptune Holding US GP LLC.

F6 · derivative.exercise_date: These Class C Units vest with CVC 3 upon the termination of employment of certain participants in the Neptune Management Limited Partnership Carry Unit Plan. At the time a portion of this derivative security was converted to Class A common stock, as reported on this Form 4, another portion of this derivative security was canceled for no consideration due to other distributions of Class A common stock by Neptune Holding US LP.

F6 · derivative.expiration_date: These Class C Units vest with CVC 3 upon the termination of employment of certain participants in the Neptune Management Limited Partnership Carry Unit Plan. At the time a portion of this derivative security was converted to Class A common stock, as reported on this Form 4, another portion of this derivative security was canceled for no consideration due to other distributions of Class A common stock by Neptune Holding US LP.

F2 · ownership.nature: Next Alt S.a r.l. ("Next Alt") is a personal holding company of Mr. Drahi, who is its controlling shareholder. As of the date of this report, Next Alt is the holder of 67.53% of the share capital and voting rights of Altice Europe N.V. Altice Europe N.V. maintains a one-tier board of four executive board members, one of whom is Mr. Drahi, and four non-executive board members. The executive board members are appointed by shareholders at the general meeting at the binding nomination of Next Alt. CVC 3 B.V. ("CVC 3") is wholly owned by Altice Europe N.V. Mr. Drahi, Next Alt and Altice Europe N.V. may each be deemed to beneficially own the shares of the Issuer owned by CVC 3.

F3 · ownership.nature: Mr. Drahi is the sole controlling shareholder of Uppernext S.C.S.p ("Uppernext"). As such, Mr. Drahi may be deemed to beneficially own shares of the Issuer held by Uppernext. A4 S.A., which is controlled by the family of Mr. Drahi, is an executive board member of Altice Europe N.V. Mr. Drahi is a director of the Issuer and Next Alt and A4 S.A. are parties to a stockholders agreement with the Issuer pursuant to which they have certain rights to appoint directors of the Issuer.

F4 · ownership.nature: Each Reporting Person disclaims beneficial ownership of all interests reported on this Form 4 except to the extent of such Reporting Person's pecuniary interests.

SEC source: 0000947871-19-000464 · ownership.xml · derivative · entry 6

Next Alt S.a.r.l. · CIK 0001709662 · Director · 10% owner

Drahi Patrick · CIK 0001709689 · Director · 10% owner

A4 S.A. · CIK 0001709665 · Director

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: Not disclosed

Ownership: Indirect · CVC 3 B.V.

Disclosed balance after: 21,255,670

Underlying: Class A common stock · 2,110,967 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · derivative.exercise_price: Class A Units represent a contingent right to receive shares of Class A common stock of the Issuer in the discretion of Neptune Holding US GP LLC. At the time a portion of this derivative security was converted to Class A common stock, as reported on this Form 4, another portion of this derivative security was canceled for no consideration due to other distributions of Class A common stock by Neptune Holding US Limited Partnership.

F1 · derivative.exercise_date: Class A Units represent a contingent right to receive shares of Class A common stock of the Issuer in the discretion of Neptune Holding US GP LLC. At the time a portion of this derivative security was converted to Class A common stock, as reported on this Form 4, another portion of this derivative security was canceled for no consideration due to other distributions of Class A common stock by Neptune Holding US Limited Partnership.

F1 · derivative.expiration_date: Class A Units represent a contingent right to receive shares of Class A common stock of the Issuer in the discretion of Neptune Holding US GP LLC. At the time a portion of this derivative security was converted to Class A common stock, as reported on this Form 4, another portion of this derivative security was canceled for no consideration due to other distributions of Class A common stock by Neptune Holding US Limited Partnership.

F2 · ownership.nature: Next Alt S.a r.l. ("Next Alt") is a personal holding company of Mr. Drahi, who is its controlling shareholder. As of the date of this report, Next Alt is the holder of 67.53% of the share capital and voting rights of Altice Europe N.V. Altice Europe N.V. maintains a one-tier board of four executive board members, one of whom is Mr. Drahi, and four non-executive board members. The executive board members are appointed by shareholders at the general meeting at the binding nomination of Next Alt. CVC 3 B.V. ("CVC 3") is wholly owned by Altice Europe N.V. Mr. Drahi, Next Alt and Altice Europe N.V. may each be deemed to beneficially own the shares of the Issuer owned by CVC 3.

F3 · ownership.nature: Mr. Drahi is the sole controlling shareholder of Uppernext S.C.S.p ("Uppernext"). As such, Mr. Drahi may be deemed to beneficially own shares of the Issuer held by Uppernext. A4 S.A., which is controlled by the family of Mr. Drahi, is an executive board member of Altice Europe N.V. Mr. Drahi is a director of the Issuer and Next Alt and A4 S.A. are parties to a stockholders agreement with the Issuer pursuant to which they have certain rights to appoint directors of the Issuer.

F4 · ownership.nature: Each Reporting Person disclaims beneficial ownership of all interests reported on this Form 4 except to the extent of such Reporting Person's pecuniary interests.

SEC source: 0000947871-19-000464 · ownership.xml · nonDerivative · entry 2

Next Alt S.a.r.l. · CIK 0001709662 · Director · 10% owner

Drahi Patrick · CIK 0001709689 · Director · 10% owner

A4 S.A. · CIK 0001709665 · Director

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: Not disclosed

Ownership: Indirect · CVC 3 B.V.

Disclosed balance after: 11,725,832

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F5 · price: Class C Units represent a contingent right to receive, following vesting, shares of Class A common stock of the Issuer in the discretion of Neptune Holding US GP LLC.

F2 · ownership.nature: Next Alt S.a r.l. ("Next Alt") is a personal holding company of Mr. Drahi, who is its controlling shareholder. As of the date of this report, Next Alt is the holder of 67.53% of the share capital and voting rights of Altice Europe N.V. Altice Europe N.V. maintains a one-tier board of four executive board members, one of whom is Mr. Drahi, and four non-executive board members. The executive board members are appointed by shareholders at the general meeting at the binding nomination of Next Alt. CVC 3 B.V. ("CVC 3") is wholly owned by Altice Europe N.V. Mr. Drahi, Next Alt and Altice Europe N.V. may each be deemed to beneficially own the shares of the Issuer owned by CVC 3.

F3 · ownership.nature: Mr. Drahi is the sole controlling shareholder of Uppernext S.C.S.p ("Uppernext"). As such, Mr. Drahi may be deemed to beneficially own shares of the Issuer held by Uppernext. A4 S.A., which is controlled by the family of Mr. Drahi, is an executive board member of Altice Europe N.V. Mr. Drahi is a director of the Issuer and Next Alt and A4 S.A. are parties to a stockholders agreement with the Issuer pursuant to which they have certain rights to appoint directors of the Issuer.

F4 · ownership.nature: Each Reporting Person disclaims beneficial ownership of all interests reported on this Form 4 except to the extent of such Reporting Person's pecuniary interests.

SEC source: 0000947871-19-000464 · ownership.xml · nonDerivative · entry 1

Next Alt S.a.r.l. · CIK 0001709662 · Director · 10% owner

Drahi Patrick · CIK 0001709689 · Director · 10% owner

A4 S.A. · CIK 0001709665 · Director

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: Not disclosed

Ownership: Indirect · CVC 3 B.V.

Disclosed balance after: 10,916,771

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · price: Class A Units represent a contingent right to receive shares of Class A common stock of the Issuer in the discretion of Neptune Holding US GP LLC. At the time a portion of this derivative security was converted to Class A common stock, as reported on this Form 4, another portion of this derivative security was canceled for no consideration due to other distributions of Class A common stock by Neptune Holding US Limited Partnership.

F2 · ownership.nature: Next Alt S.a r.l. ("Next Alt") is a personal holding company of Mr. Drahi, who is its controlling shareholder. As of the date of this report, Next Alt is the holder of 67.53% of the share capital and voting rights of Altice Europe N.V. Altice Europe N.V. maintains a one-tier board of four executive board members, one of whom is Mr. Drahi, and four non-executive board members. The executive board members are appointed by shareholders at the general meeting at the binding nomination of Next Alt. CVC 3 B.V. ("CVC 3") is wholly owned by Altice Europe N.V. Mr. Drahi, Next Alt and Altice Europe N.V. may each be deemed to beneficially own the shares of the Issuer owned by CVC 3.

F3 · ownership.nature: Mr. Drahi is the sole controlling shareholder of Uppernext S.C.S.p ("Uppernext"). As such, Mr. Drahi may be deemed to beneficially own shares of the Issuer held by Uppernext. A4 S.A., which is controlled by the family of Mr. Drahi, is an executive board member of Altice Europe N.V. Mr. Drahi is a director of the Issuer and Next Alt and A4 S.A. are parties to a stockholders agreement with the Issuer pursuant to which they have certain rights to appoint directors of the Issuer.

F4 · ownership.nature: Each Reporting Person disclaims beneficial ownership of all interests reported on this Form 4 except to the extent of such Reporting Person's pecuniary interests.

SEC source: 0000947871-19-000467 · ownership.xml · derivative · entry 2

Taki Layth · CIK 0001763752 · SVP & Chief Accounting Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 37,414

Underlying: Class A common stock · 37,278 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · derivative.exercise_price: Class C Units represent a contingent right to receive, following vesting, shares of Class A common stock of the Issuer in the discretion of Neptune Holding US GP LLC.

F1 · derivative.exercise_date: Class C Units represent a contingent right to receive, following vesting, shares of Class A common stock of the Issuer in the discretion of Neptune Holding US GP LLC.

F1 · derivative.expiration_date: Class C Units represent a contingent right to receive, following vesting, shares of Class A common stock of the Issuer in the discretion of Neptune Holding US GP LLC.

SEC source: 0000947871-19-000467 · ownership.xml · nonDerivative · entry 1

Taki Layth · CIK 0001763752 · SVP & Chief Accounting Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 87,278

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · price: Class C Units represent a contingent right to receive, following vesting, shares of Class A common stock of the Issuer in the discretion of Neptune Holding US GP LLC.

SEC source: 0000947871-19-000466 · ownership.xml · derivative · entry 2

Schmidt Colleen · CIK 0001769422 · EVP Human Resources

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 112,243

Underlying: Class A common stock · 111,833 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · derivative.exercise_price: Class C Units represent a contingent right to receive, following vesting, shares of Class A common stock of the Issuer in the discretion of Neptune Holding US GP LLC.

F1 · derivative.exercise_date: Class C Units represent a contingent right to receive, following vesting, shares of Class A common stock of the Issuer in the discretion of Neptune Holding US GP LLC.

F1 · derivative.expiration_date: Class C Units represent a contingent right to receive, following vesting, shares of Class A common stock of the Issuer in the discretion of Neptune Holding US GP LLC.

SEC source: 0000947871-19-000466 · ownership.xml · nonDerivative · entry 1

Schmidt Colleen · CIK 0001769422 · EVP Human Resources

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 222,427

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · price: Class C Units represent a contingent right to receive, following vesting, shares of Class A common stock of the Issuer in the discretion of Neptune Holding US GP LLC.

SEC source: 0000947871-19-000465 · ownership.xml · derivative · entry 2

Olsen Michael · CIK 0001773608 · Acting Gen. Counsel & Sec.

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 74,829

Underlying: Class A common stock · 74,556 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · derivative.exercise_price: Class C Units represent a contingent right to receive, following vesting, shares of Class A common stock of the Issuer in the discretion of Neptune Holding US GP LLC.

F1 · derivative.exercise_date: Class C Units represent a contingent right to receive, following vesting, shares of Class A common stock of the Issuer in the discretion of Neptune Holding US GP LLC.

F1 · derivative.expiration_date: Class C Units represent a contingent right to receive, following vesting, shares of Class A common stock of the Issuer in the discretion of Neptune Holding US GP LLC.

SEC source: 0000947871-19-000465 · ownership.xml · nonDerivative · entry 1

Olsen Michael · CIK 0001773608 · Acting Gen. Counsel & Sec.

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 105,355

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · price: Class C Units represent a contingent right to receive, following vesting, shares of Class A common stock of the Issuer in the discretion of Neptune Holding US GP LLC.

SEC source: 0000947871-19-000456 · ownership.xml · derivative · entry 6

Next Alt S.a.r.l. · CIK 0001709662 · Director · 10% owner

Drahi Patrick · CIK 0001709689 · Director · 10% owner

A4 S.A. · CIK 0001709665 · Director

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: Not disclosed

Ownership: Indirect · Altice Europe N.V.

Disclosed balance after: 0

Underlying: Class A common stock · 1,699,909 shares

Expires not disclosed

F1 · derivative.exercise_price: Altice Europe N.V. is physically settling a share forward contract with a final reference date of June 15, 2019 (the "Forward Contract") entered into with a financial institution counterparty. Pursuant to the Forward Contract, in exchange for payment from the counterparty upon settlement, Altice Europe N.V. is delivering to the counterparty 1,699,909 shares of Class A common stock of the Issuer, along with a certain number of Altice Europe N.V. shares that were also subject to the Forward Contract.

F2 · derivative.exercise_price: In anticipation of settlement of the Forward Contract, on June 13, 2019, 1,699,909 shares of Class A common stock of the Issuer were transferred to Altice Europe N.V. from its wholly-owned subsidiary CVC 3 B.V. ("CVC 3"). In connection with the settlement of the Forward Contract, shares of Class A common stock of the Issuer will be sold by the financial institution counterparty over the 10-day period beginning immediately following June 17, 2019.

F1 · date: Altice Europe N.V. is physically settling a share forward contract with a final reference date of June 15, 2019 (the "Forward Contract") entered into with a financial institution counterparty. Pursuant to the Forward Contract, in exchange for payment from the counterparty upon settlement, Altice Europe N.V. is delivering to the counterparty 1,699,909 shares of Class A common stock of the Issuer, along with a certain number of Altice Europe N.V. shares that were also subject to the Forward Contract.

F2 · date: In anticipation of settlement of the Forward Contract, on June 13, 2019, 1,699,909 shares of Class A common stock of the Issuer were transferred to Altice Europe N.V. from its wholly-owned subsidiary CVC 3 B.V. ("CVC 3"). In connection with the settlement of the Forward Contract, shares of Class A common stock of the Issuer will be sold by the financial institution counterparty over the 10-day period beginning immediately following June 17, 2019.

F1 · kind: Altice Europe N.V. is physically settling a share forward contract with a final reference date of June 15, 2019 (the "Forward Contract") entered into with a financial institution counterparty. Pursuant to the Forward Contract, in exchange for payment from the counterparty upon settlement, Altice Europe N.V. is delivering to the counterparty 1,699,909 shares of Class A common stock of the Issuer, along with a certain number of Altice Europe N.V. shares that were also subject to the Forward Contract.

F2 · kind: In anticipation of settlement of the Forward Contract, on June 13, 2019, 1,699,909 shares of Class A common stock of the Issuer were transferred to Altice Europe N.V. from its wholly-owned subsidiary CVC 3 B.V. ("CVC 3"). In connection with the settlement of the Forward Contract, shares of Class A common stock of the Issuer will be sold by the financial institution counterparty over the 10-day period beginning immediately following June 17, 2019.

F1 · price: Altice Europe N.V. is physically settling a share forward contract with a final reference date of June 15, 2019 (the "Forward Contract") entered into with a financial institution counterparty. Pursuant to the Forward Contract, in exchange for payment from the counterparty upon settlement, Altice Europe N.V. is delivering to the counterparty 1,699,909 shares of Class A common stock of the Issuer, along with a certain number of Altice Europe N.V. shares that were also subject to the Forward Contract.

F2 · price: In anticipation of settlement of the Forward Contract, on June 13, 2019, 1,699,909 shares of Class A common stock of the Issuer were transferred to Altice Europe N.V. from its wholly-owned subsidiary CVC 3 B.V. ("CVC 3"). In connection with the settlement of the Forward Contract, shares of Class A common stock of the Issuer will be sold by the financial institution counterparty over the 10-day period beginning immediately following June 17, 2019.

F1 · derivative.exercise_date: Altice Europe N.V. is physically settling a share forward contract with a final reference date of June 15, 2019 (the "Forward Contract") entered into with a financial institution counterparty. Pursuant to the Forward Contract, in exchange for payment from the counterparty upon settlement, Altice Europe N.V. is delivering to the counterparty 1,699,909 shares of Class A common stock of the Issuer, along with a certain number of Altice Europe N.V. shares that were also subject to the Forward Contract.

F2 · derivative.exercise_date: In anticipation of settlement of the Forward Contract, on June 13, 2019, 1,699,909 shares of Class A common stock of the Issuer were transferred to Altice Europe N.V. from its wholly-owned subsidiary CVC 3 B.V. ("CVC 3"). In connection with the settlement of the Forward Contract, shares of Class A common stock of the Issuer will be sold by the financial institution counterparty over the 10-day period beginning immediately following June 17, 2019.

F1 · derivative.expiration_date: Altice Europe N.V. is physically settling a share forward contract with a final reference date of June 15, 2019 (the "Forward Contract") entered into with a financial institution counterparty. Pursuant to the Forward Contract, in exchange for payment from the counterparty upon settlement, Altice Europe N.V. is delivering to the counterparty 1,699,909 shares of Class A common stock of the Issuer, along with a certain number of Altice Europe N.V. shares that were also subject to the Forward Contract.

F2 · derivative.expiration_date: In anticipation of settlement of the Forward Contract, on June 13, 2019, 1,699,909 shares of Class A common stock of the Issuer were transferred to Altice Europe N.V. from its wholly-owned subsidiary CVC 3 B.V. ("CVC 3"). In connection with the settlement of the Forward Contract, shares of Class A common stock of the Issuer will be sold by the financial institution counterparty over the 10-day period beginning immediately following June 17, 2019.

F3 · ownership.nature: Next Alt S.a r.l. ("Next Alt") is a personal holding company of Mr. Drahi, who is its controlling shareholder. As of the date of this report, Next Alt is the holder of 67.53% of the share capital and voting rights of Altice Europe N.V. Altice Europe N.V. maintains a one-tier board of four executive board members, one of whom is Mr. Drahi, and four non-executive board members. The executive board members are appointed by shareholders at the general meeting at the binding nomination of Next Alt. Mr. Drahi and Next Alt may each be deemed to beneficially own the shares of the Issuer owned by Altice Europe N.V. and CVC 3.

F4 · ownership.nature: Mr. Drahi is the sole controlling shareholder of Uppernext S.C.S.p ("Uppernext"). As such, Mr. Drahi may be deemed to beneficially own shares of the Issuer held by Uppernext. A4 S.A., which is controlled by the family of Mr. Drahi, is an executive board member of Altice Europe N.V. Mr. Drahi is a director of the Issuer and Next Alt and A4 S.A. are parties to a stockholders agreement with the Issuer pursuant to which they have certain rights to appoint directors of the Issuer.

F5 · ownership.nature: Each Reporting Person disclaims beneficial ownership of all interests reported on this Form 4 except to the extent of such Reporting Person's pecuniary interests.

SEC source: 0000947871-19-000456 · ownership.xml · nonDerivative · entry 1

Next Alt S.a.r.l. · CIK 0001709662 · Director · 10% owner

Drahi Patrick · CIK 0001709689 · Director · 10% owner

A4 S.A. · CIK 0001709665 · Director

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: Not disclosed

Ownership: Indirect · Altice Europe N.V.

Disclosed balance after: 0

F1 · date: Altice Europe N.V. is physically settling a share forward contract with a final reference date of June 15, 2019 (the "Forward Contract") entered into with a financial institution counterparty. Pursuant to the Forward Contract, in exchange for payment from the counterparty upon settlement, Altice Europe N.V. is delivering to the counterparty 1,699,909 shares of Class A common stock of the Issuer, along with a certain number of Altice Europe N.V. shares that were also subject to the Forward Contract.

F2 · date: In anticipation of settlement of the Forward Contract, on June 13, 2019, 1,699,909 shares of Class A common stock of the Issuer were transferred to Altice Europe N.V. from its wholly-owned subsidiary CVC 3 B.V. ("CVC 3"). In connection with the settlement of the Forward Contract, shares of Class A common stock of the Issuer will be sold by the financial institution counterparty over the 10-day period beginning immediately following June 17, 2019.

F1 · kind: Altice Europe N.V. is physically settling a share forward contract with a final reference date of June 15, 2019 (the "Forward Contract") entered into with a financial institution counterparty. Pursuant to the Forward Contract, in exchange for payment from the counterparty upon settlement, Altice Europe N.V. is delivering to the counterparty 1,699,909 shares of Class A common stock of the Issuer, along with a certain number of Altice Europe N.V. shares that were also subject to the Forward Contract.

F2 · kind: In anticipation of settlement of the Forward Contract, on June 13, 2019, 1,699,909 shares of Class A common stock of the Issuer were transferred to Altice Europe N.V. from its wholly-owned subsidiary CVC 3 B.V. ("CVC 3"). In connection with the settlement of the Forward Contract, shares of Class A common stock of the Issuer will be sold by the financial institution counterparty over the 10-day period beginning immediately following June 17, 2019.

F1 · price: Altice Europe N.V. is physically settling a share forward contract with a final reference date of June 15, 2019 (the "Forward Contract") entered into with a financial institution counterparty. Pursuant to the Forward Contract, in exchange for payment from the counterparty upon settlement, Altice Europe N.V. is delivering to the counterparty 1,699,909 shares of Class A common stock of the Issuer, along with a certain number of Altice Europe N.V. shares that were also subject to the Forward Contract.

F2 · price: In anticipation of settlement of the Forward Contract, on June 13, 2019, 1,699,909 shares of Class A common stock of the Issuer were transferred to Altice Europe N.V. from its wholly-owned subsidiary CVC 3 B.V. ("CVC 3"). In connection with the settlement of the Forward Contract, shares of Class A common stock of the Issuer will be sold by the financial institution counterparty over the 10-day period beginning immediately following June 17, 2019.

F3 · ownership.nature: Next Alt S.a r.l. ("Next Alt") is a personal holding company of Mr. Drahi, who is its controlling shareholder. As of the date of this report, Next Alt is the holder of 67.53% of the share capital and voting rights of Altice Europe N.V. Altice Europe N.V. maintains a one-tier board of four executive board members, one of whom is Mr. Drahi, and four non-executive board members. The executive board members are appointed by shareholders at the general meeting at the binding nomination of Next Alt. Mr. Drahi and Next Alt may each be deemed to beneficially own the shares of the Issuer owned by Altice Europe N.V. and CVC 3.

F4 · ownership.nature: Mr. Drahi is the sole controlling shareholder of Uppernext S.C.S.p ("Uppernext"). As such, Mr. Drahi may be deemed to beneficially own shares of the Issuer held by Uppernext. A4 S.A., which is controlled by the family of Mr. Drahi, is an executive board member of Altice Europe N.V. Mr. Drahi is a director of the Issuer and Next Alt and A4 S.A. are parties to a stockholders agreement with the Issuer pursuant to which they have certain rights to appoint directors of the Issuer.

F5 · ownership.nature: Each Reporting Person disclaims beneficial ownership of all interests reported on this Form 4 except to the extent of such Reporting Person's pecuniary interests.

SEC source: 0000947871-19-000442 · ownership.xml · nonDerivative · entry 2

Okhuijsen Dennis · CIK 0001708840 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 0

F2 · price: Represents the weighted average sales price of the shares sold ranging from a low of $24.62 to a high of $24.91 per share. The Reporting Person undertakes, upon request by the Commission staff, the Issuer or a security holder of the Issuer, to provide full information regarding the number of shares sold at each separate price.

SEC source: 0000947871-19-000442 · ownership.xml · nonDerivative · entry 1

Okhuijsen Dennis · CIK 0001708840 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 276,724

F1 · price: Represents the weighted average sales price of the shares sold ranging from a low of $24.05 to a high of $24.87 per share. The Reporting Person undertakes, upon request by the Commission staff, the Issuer or a security holder of the Issuer, to provide full information regarding the number of shares sold at each separate price.

SEC source: 0000947871-19-000441 · ownership.xml · derivative · entry 5

Next Alt S.a.r.l. · CIK 0001709662 · Director · 10% owner

Drahi Patrick · CIK 0001709689 · Director · 10% owner

A4 S.A. · CIK 0001709665 · Director

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: Not disclosed

Ownership: Indirect · CVC 3 B.V.

Disclosed balance after: 26,565,190

Underlying: Class A common stock · 115,055 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · derivative.exercise_price: Class A Units represent a contingent right to receive shares of Class A common stock of the Issuer in the discretion of Neptune Holding US GP LLC. At the time a portion of this derivative security was converted to Class A common stock, as reported on this Form 4, another portion of this derivative security was canceled for no consideration due to other distributions of Class A common stock by Neptune Holding US Limited Partnership.

F1 · derivative.exercise_date: Class A Units represent a contingent right to receive shares of Class A common stock of the Issuer in the discretion of Neptune Holding US GP LLC. At the time a portion of this derivative security was converted to Class A common stock, as reported on this Form 4, another portion of this derivative security was canceled for no consideration due to other distributions of Class A common stock by Neptune Holding US Limited Partnership.

F1 · derivative.expiration_date: Class A Units represent a contingent right to receive shares of Class A common stock of the Issuer in the discretion of Neptune Holding US GP LLC. At the time a portion of this derivative security was converted to Class A common stock, as reported on this Form 4, another portion of this derivative security was canceled for no consideration due to other distributions of Class A common stock by Neptune Holding US Limited Partnership.

F2 · ownership.nature: Next Alt S.a r.l. ("Next Alt") is a personal holding company of Mr. Drahi, who is its controlling shareholder. As of the date of this report, Next Alt is the holder of 67.53% of the share capital and voting rights of Altice Europe N.V. Altice Europe N.V. maintains a one-tier board of four executive board members, one of whom is Mr. Drahi, and four non-executive board members. The executive board members are appointed by shareholders at the general meeting at the binding nomination of Next Alt. Altice Europe N.V. owns a direct controlling interest in CVC 3 B.V. ("CVC 3"). Mr. Drahi, Next Alt and Altice Europe N.V. may each be deemed to beneficially own the shares of the Issuer owned by CVC 3.

F3 · ownership.nature: Mr. Drahi is the sole controlling shareholder of Uppernext S.C.S.p ("Uppernext"). As such, Mr. Drahi may be deemed to beneficially own shares of the Issuer held by Uppernext. A4 S.A., which is controlled by the family of Mr. Drahi, is an executive board member of Altice Europe N.V. Mr. Drahi is a director of the Issuer and Next Alt and A4 S.A. are parties to a stockholders agreement with the Issuer pursuant to which they have certain rights to appoint directors of the Issuer.

F4 · ownership.nature: Each Reporting Person disclaims beneficial ownership of all interests reported on this Form 4 except to the extent of such Reporting Person's pecuniary interests.

SEC source: 0000947871-19-000441 · ownership.xml · nonDerivative · entry 1

Next Alt S.a.r.l. · CIK 0001709662 · Director · 10% owner

Drahi Patrick · CIK 0001709689 · Director · 10% owner

A4 S.A. · CIK 0001709665 · Director

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: Not disclosed

Ownership: Indirect · CVC 3 B.V.

Disclosed balance after: 10,505,713

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · price: Class A Units represent a contingent right to receive shares of Class A common stock of the Issuer in the discretion of Neptune Holding US GP LLC. At the time a portion of this derivative security was converted to Class A common stock, as reported on this Form 4, another portion of this derivative security was canceled for no consideration due to other distributions of Class A common stock by Neptune Holding US Limited Partnership.

F2 · ownership.nature: Next Alt S.a r.l. ("Next Alt") is a personal holding company of Mr. Drahi, who is its controlling shareholder. As of the date of this report, Next Alt is the holder of 67.53% of the share capital and voting rights of Altice Europe N.V. Altice Europe N.V. maintains a one-tier board of four executive board members, one of whom is Mr. Drahi, and four non-executive board members. The executive board members are appointed by shareholders at the general meeting at the binding nomination of Next Alt. Altice Europe N.V. owns a direct controlling interest in CVC 3 B.V. ("CVC 3"). Mr. Drahi, Next Alt and Altice Europe N.V. may each be deemed to beneficially own the shares of the Issuer owned by CVC 3.

F3 · ownership.nature: Mr. Drahi is the sole controlling shareholder of Uppernext S.C.S.p ("Uppernext"). As such, Mr. Drahi may be deemed to beneficially own shares of the Issuer held by Uppernext. A4 S.A., which is controlled by the family of Mr. Drahi, is an executive board member of Altice Europe N.V. Mr. Drahi is a director of the Issuer and Next Alt and A4 S.A. are parties to a stockholders agreement with the Issuer pursuant to which they have certain rights to appoint directors of the Issuer.

F4 · ownership.nature: Each Reporting Person disclaims beneficial ownership of all interests reported on this Form 4 except to the extent of such Reporting Person's pecuniary interests.

SEC source: 0000947871-19-000424 · ownership.xml · nonDerivative · entry 2

Okhuijsen Dennis · CIK 0001708840 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 551,725

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · kind: Each share of Class B common stock, which is a registered security of the Issuer, is convertible on a share-for-share basis at any time upon written notice to the Issuer at the option of the holder into one share of Class A common stock pursuant to the Issuer's third amended and restated certificate of incorporation. Holders of Class A common stock are entitled to one vote per share and holders of Class B common stock are entitled to twenty-five votes per share, in each case, on any matter submitted to a vote of Altice USA stockholders. Shares of Class B common stock that have been converted into Class A common stock may not be converted back into shares of Class B common stock.

F1 · price: Each share of Class B common stock, which is a registered security of the Issuer, is convertible on a share-for-share basis at any time upon written notice to the Issuer at the option of the holder into one share of Class A common stock pursuant to the Issuer's third amended and restated certificate of incorporation. Holders of Class A common stock are entitled to one vote per share and holders of Class B common stock are entitled to twenty-five votes per share, in each case, on any matter submitted to a vote of Altice USA stockholders. Shares of Class B common stock that have been converted into Class A common stock may not be converted back into shares of Class B common stock.

SEC source: 0000947871-19-000424 · ownership.xml · nonDerivative · entry 1

Okhuijsen Dennis · CIK 0001708840 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 0

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · kind: Each share of Class B common stock, which is a registered security of the Issuer, is convertible on a share-for-share basis at any time upon written notice to the Issuer at the option of the holder into one share of Class A common stock pursuant to the Issuer's third amended and restated certificate of incorporation. Holders of Class A common stock are entitled to one vote per share and holders of Class B common stock are entitled to twenty-five votes per share, in each case, on any matter submitted to a vote of Altice USA stockholders. Shares of Class B common stock that have been converted into Class A common stock may not be converted back into shares of Class B common stock.

F1 · price: Each share of Class B common stock, which is a registered security of the Issuer, is convertible on a share-for-share basis at any time upon written notice to the Issuer at the option of the holder into one share of Class A common stock pursuant to the Issuer's third amended and restated certificate of incorporation. Holders of Class A common stock are entitled to one vote per share and holders of Class B common stock are entitled to twenty-five votes per share, in each case, on any matter submitted to a vote of Altice USA stockholders. Shares of Class B common stock that have been converted into Class A common stock may not be converted back into shares of Class B common stock.

SEC source: 0000947871-19-000310 · ownership.xml · derivative · entry 7

Next Alt S.a.r.l. · CIK 0001709662 · Director · 10% owner

Drahi Patrick · CIK 0001709689 · Director · 10% owner

A4 S.A. · CIK 0001709665 · Director

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: Not disclosed

Ownership: Indirect · CVC 3 B.V.

Disclosed balance after: 19,011,572

Underlying: Class A common stock · 11,754 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F5 · derivative.exercise_price: Class C Units represent a contingent right to receive, following vesting, shares of Class A common stock of the Issuer in the discretion of Neptune Holding US GP LLC.

F6 · derivative.exercise_date: These Class C Units vest with CVC 3 upon the termination of employment of certain participants in the Neptune Management Limited Partnership Carry Unit Plan. At the time a portion of this derivative security was converted to Class A common stock, as reported on this Form 4, another portion of this derivative security was canceled for no consideration due to other distributions of Class A common stock by Neptune Holding US LP.

F6 · derivative.expiration_date: These Class C Units vest with CVC 3 upon the termination of employment of certain participants in the Neptune Management Limited Partnership Carry Unit Plan. At the time a portion of this derivative security was converted to Class A common stock, as reported on this Form 4, another portion of this derivative security was canceled for no consideration due to other distributions of Class A common stock by Neptune Holding US LP.

SEC source: 0000947871-19-000310 · ownership.xml · derivative · entry 6

Next Alt S.a.r.l. · CIK 0001709662 · Director · 10% owner

Drahi Patrick · CIK 0001709689 · Director · 10% owner

A4 S.A. · CIK 0001709665 · Director

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: Not disclosed

Ownership: Indirect · CVC 3 B.V.

Disclosed balance after: 26,834,850

Underlying: Class A common stock · 281,991 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · derivative.exercise_price: Class A Units represent a contingent right to receive shares of Class A common stock of the Issuer in the discretion of Neptune Holding US GP LLC. At the time a portion of this derivative security was converted to Class A common stock, as reported on this Form 4, another portion of this derivative security was canceled for no consideration due to other distributions of Class A common stock by Neptune Holding US Limited Partnership.

F1 · derivative.exercise_date: Class A Units represent a contingent right to receive shares of Class A common stock of the Issuer in the discretion of Neptune Holding US GP LLC. At the time a portion of this derivative security was converted to Class A common stock, as reported on this Form 4, another portion of this derivative security was canceled for no consideration due to other distributions of Class A common stock by Neptune Holding US Limited Partnership.

F1 · derivative.expiration_date: Class A Units represent a contingent right to receive shares of Class A common stock of the Issuer in the discretion of Neptune Holding US GP LLC. At the time a portion of this derivative security was converted to Class A common stock, as reported on this Form 4, another portion of this derivative security was canceled for no consideration due to other distributions of Class A common stock by Neptune Holding US Limited Partnership.

F2 · ownership.nature: Next Alt S.a r.l. ("Next Alt") is a personal holding company of Mr. Drahi, who is its controlling shareholder. As of the date of this report, Next Alt is the holder of 67.53% of the share capital and voting rights of Altice Europe N.V. Altice Europe N.V. maintains a one-tier board of four executive board members, one of whom is Mr. Drahi, and four non-executive board members. The executive board members are appointed by shareholders at the general meeting at the binding nomination of Next Alt. Altice Europe N.V. owns a direct controlling interest in CVC 3 B.V. ("CVC 3"). Mr. Drahi, Next Alt and Altice Europe N.V. may each be deemed to beneficially own the shares of the Issuer owned by CVC 3.

F3 · ownership.nature: Mr. Drahi is the sole controlling shareholder of Uppernext S.C.S.p ("Uppernext"). As such, Mr. Drahi may be deemed to beneficially own shares of the Issuer held by Uppernext. A4 S.A., which is controlled by the family of Mr. Drahi, is an executive board member of Altice Europe N.V. Mr. Drahi is a director of the Issuer and Next Alt and A4 S.A. are parties to a stockholders agreement with the Issuer pursuant to which they have certain rights to appoint directors of the Issuer.

F4 · ownership.nature: Each Reporting Person disclaims beneficial ownership of all interests reported on this Form 4 except to the extent of such Reporting Person's pecuniary interests.

SEC source: 0000947871-19-000310 · ownership.xml · nonDerivative · entry 2

Next Alt S.a.r.l. · CIK 0001709662 · Director · 10% owner

Drahi Patrick · CIK 0001709689 · Director · 10% owner

A4 S.A. · CIK 0001709665 · Director

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: Not disclosed

Ownership: Indirect · CVC 3 B.V.

Disclosed balance after: 10,390,658

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F5 · price: Class C Units represent a contingent right to receive, following vesting, shares of Class A common stock of the Issuer in the discretion of Neptune Holding US GP LLC.

F2 · ownership.nature: Next Alt S.a r.l. ("Next Alt") is a personal holding company of Mr. Drahi, who is its controlling shareholder. As of the date of this report, Next Alt is the holder of 67.53% of the share capital and voting rights of Altice Europe N.V. Altice Europe N.V. maintains a one-tier board of four executive board members, one of whom is Mr. Drahi, and four non-executive board members. The executive board members are appointed by shareholders at the general meeting at the binding nomination of Next Alt. Altice Europe N.V. owns a direct controlling interest in CVC 3 B.V. ("CVC 3"). Mr. Drahi, Next Alt and Altice Europe N.V. may each be deemed to beneficially own the shares of the Issuer owned by CVC 3.

F3 · ownership.nature: Mr. Drahi is the sole controlling shareholder of Uppernext S.C.S.p ("Uppernext"). As such, Mr. Drahi may be deemed to beneficially own shares of the Issuer held by Uppernext. A4 S.A., which is controlled by the family of Mr. Drahi, is an executive board member of Altice Europe N.V. Mr. Drahi is a director of the Issuer and Next Alt and A4 S.A. are parties to a stockholders agreement with the Issuer pursuant to which they have certain rights to appoint directors of the Issuer.

F4 · ownership.nature: Each Reporting Person disclaims beneficial ownership of all interests reported on this Form 4 except to the extent of such Reporting Person's pecuniary interests.

SEC source: 0000947871-19-000310 · ownership.xml · nonDerivative · entry 1

Next Alt S.a.r.l. · CIK 0001709662 · Director · 10% owner

Drahi Patrick · CIK 0001709689 · Director · 10% owner

A4 S.A. · CIK 0001709665 · Director

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: Not disclosed

Ownership: Indirect · CVC 3 B.V.

Disclosed balance after: 10,378,904

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · price: Class A Units represent a contingent right to receive shares of Class A common stock of the Issuer in the discretion of Neptune Holding US GP LLC. At the time a portion of this derivative security was converted to Class A common stock, as reported on this Form 4, another portion of this derivative security was canceled for no consideration due to other distributions of Class A common stock by Neptune Holding US Limited Partnership.

F2 · ownership.nature: Next Alt S.a r.l. ("Next Alt") is a personal holding company of Mr. Drahi, who is its controlling shareholder. As of the date of this report, Next Alt is the holder of 67.53% of the share capital and voting rights of Altice Europe N.V. Altice Europe N.V. maintains a one-tier board of four executive board members, one of whom is Mr. Drahi, and four non-executive board members. The executive board members are appointed by shareholders at the general meeting at the binding nomination of Next Alt. Altice Europe N.V. owns a direct controlling interest in CVC 3 B.V. ("CVC 3"). Mr. Drahi, Next Alt and Altice Europe N.V. may each be deemed to beneficially own the shares of the Issuer owned by CVC 3.

F3 · ownership.nature: Mr. Drahi is the sole controlling shareholder of Uppernext S.C.S.p ("Uppernext"). As such, Mr. Drahi may be deemed to beneficially own shares of the Issuer held by Uppernext. A4 S.A., which is controlled by the family of Mr. Drahi, is an executive board member of Altice Europe N.V. Mr. Drahi is a director of the Issuer and Next Alt and A4 S.A. are parties to a stockholders agreement with the Issuer pursuant to which they have certain rights to appoint directors of the Issuer.

F4 · ownership.nature: Each Reporting Person disclaims beneficial ownership of all interests reported on this Form 4 except to the extent of such Reporting Person's pecuniary interests.

SEC source: 0000947871-19-000312 · ownership.xml · derivative · entry 1

Olsen Michael · CIK 0001773608 · Acting Gen Counsel & Secretary

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 88,836

Underlying: Class A common stock · 88,836 shares

Expires 2029-04-24

SEC source: 0000947871-19-000282 · ownership.xml · derivative · entry 7

Next Alt S.a.r.l. · CIK 0001709662 · Director · 10% owner

Drahi Patrick · CIK 0001709689 · Director · 10% owner

A4 S.A. · CIK 0001709665 · Director

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: Not disclosed

Ownership: Indirect · CVC 3 B.V.

Disclosed balance after: 27,206,955

Underlying: Class A common stock · 49,264 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · derivative.exercise_price: Class A Units represent a contingent right to receive shares of Class A common stock of the Issuer in the discretion of Neptune Holding US GP LLC. At the time a portion of this derivative security was converted to Class A common stock, as reported on this Form 4, another portion of this derivative security was canceled for no consideration due to other distributions of Class A common stock by Neptune Holding US Limited.

F1 · derivative.exercise_date: Class A Units represent a contingent right to receive shares of Class A common stock of the Issuer in the discretion of Neptune Holding US GP LLC. At the time a portion of this derivative security was converted to Class A common stock, as reported on this Form 4, another portion of this derivative security was canceled for no consideration due to other distributions of Class A common stock by Neptune Holding US Limited.

F1 · derivative.expiration_date: Class A Units represent a contingent right to receive shares of Class A common stock of the Issuer in the discretion of Neptune Holding US GP LLC. At the time a portion of this derivative security was converted to Class A common stock, as reported on this Form 4, another portion of this derivative security was canceled for no consideration due to other distributions of Class A common stock by Neptune Holding US Limited.

F2 · ownership.nature: Next Alt S.a r.l. ("Next Alt") is a personal holding company of Mr. Drahi, who is its controlling shareholder. As of the date of this report, Next Alt is the holder of 67.53% of the share capital and voting rights of Altice Europe N.V. Altice Europe N.V. maintains a one-tier board of four executive board members, one of whom is Mr. Drahi, and four non-executive board members. The executive board members are appointed by shareholders at the general meeting at the binding nomination of Next Alt. Altice Europe N.V. owns a direct controlling interest in CVC 3 B.V. ("CVC 3"). Mr. Drahi, Next Alt and Altice Europe N.V. may each be deemed to beneficially own the shares of the Issuer owned by CVC 3.

F3 · ownership.nature: Mr. Drahi is the sole controlling shareholder of Uppernext S.C.S.p ("Uppernext"). As such, Mr. Drahi may be deemed to beneficially own shares of the Issuer held by Uppernext. A4 S.A., which is controlled by the family of Mr. Drahi, is an executive board member of Altice Europe N.V. Mr. Drahi is a director of the Issuer and Next Alt and A4 S.A. are parties to a stockholders agreement with the Issuer pursuant to which they have certain rights to appoint directors of the Issuer.

F4 · ownership.nature: Each Reporting Person disclaims beneficial ownership of all interests reported on this Form 4 except to the extent of such Reporting Person's pecuniary interests.