SPHR: Koester Jennifer discloses securities transactions

By AlphaYouPublished Sep 24, 2026Form 4

Stocks in this disclosure

Reported activity

Koester Jennifer

Reporting filer

Koester Jennifer reported Exercise or conversion in Sphere Entertainment Co.: 11988 units of Class A Common Stock, dated 2026-09-15. The full Form 4 contains 10 transaction entries.

Disclosed: Sep 17, 2026

Reported details

10 entries

All validated entries in this disclosure
Security	Owner	Date	Code	Action	Quantity	Price	Following holdings	Reporting delay	Filed terms and references
Class A Common Stock	Koester Jennifer	2026-09-15	M	Exercise or conversion	11988	0	42,906	2 days	Filed terms security Title: Class A Common Stock transaction Date: 2026-09-15 transaction Form Type: 4 transaction Code: M equity Swap Involved: false transaction Shares: 11988 transaction Price Per Share: 0 id: F1 transaction Acquired Disposed Code: A shares Owned Following Transaction: 42906 direct Or Indirect Ownership: D
Class A Common Stock	Koester Jennifer	2026-09-15	M	Exercise or conversion	6829	0	49,735	2 days	Filed terms security Title: Class A Common Stock transaction Date: 2026-09-15 transaction Form Type: 4 transaction Code: M equity Swap Involved: false transaction Shares: 6829 transaction Price Per Share: 0 id: F1 transaction Acquired Disposed Code: A shares Owned Following Transaction: 49735 direct Or Indirect Ownership: D
Class A Common Stock	Koester Jennifer	2026-09-15	M	Exercise or conversion	8269	0	58,004	2 days	Filed terms security Title: Class A Common Stock transaction Date: 2026-09-15 transaction Form Type: 4 transaction Code: M equity Swap Involved: false transaction Shares: 8269 transaction Price Per Share: 0 id: F2 transaction Acquired Disposed Code: A shares Owned Following Transaction: 58004 direct Or Indirect Ownership: D
Class A Common Stock	Koester Jennifer	2026-09-15	F	Tax/exercise withholding	13826	144.12	44,178	2 days	Filed terms security Title: Class A Common Stock transaction Date: 2026-09-15 transaction Form Type: 4 transaction Code: F equity Swap Involved: false id: F3 transaction Shares: 13826 transaction Price Per Share: 144.12 transaction Acquired Disposed Code: D shares Owned Following Transaction: 44178 direct Or Indirect Ownership: D
Class A Common Stock	Koester Jennifer	2026-09-15	M	Exercise or conversion	20487	0	64,665	2 days	Filed terms security Title: Class A Common Stock transaction Date: 2026-09-15 transaction Form Type: 4 transaction Code: M equity Swap Involved: false transaction Shares: 20487 transaction Price Per Share: 0 id: F4 transaction Acquired Disposed Code: A shares Owned Following Transaction: 64665 direct Or Indirect Ownership: D
Class A Common Stock	Koester Jennifer	2026-09-15	F	Tax/exercise withholding	10458	144.12	54,207	2 days	Filed terms security Title: Class A Common Stock transaction Date: 2026-09-15 transaction Form Type: 4 transaction Code: F equity Swap Involved: false id: F5 transaction Shares: 10458 transaction Price Per Share: 144.12 transaction Acquired Disposed Code: D shares Owned Following Transaction: 54207 direct Or Indirect Ownership: D
Restricted Stock Units (derivative)	Koester Jennifer	2026-09-15	M	Exercise or conversion	11988	0.00	0	2 days	Filed terms security Title: Restricted Stock Units id: F1 transaction Date: 2026-09-15 transaction Form Type: 4 transaction Code: M equity Swap Involved: false transaction Shares: 11988 transaction Price Per Share: 0.00 transaction Acquired Disposed Code: D id: F1 expiration Date: 2026-09-15 underlying Security Title: Class A Common Stock underlying Security Shares: 11988 shares Owned Following Transaction: 0 direct Or Indirect Ownership: D
Restricted Stock Units (derivative)	Koester Jennifer	2026-09-15	M	Exercise or conversion	6829	0.00	0	2 days	Filed terms security Title: Restricted Stock Units id: F1 transaction Date: 2026-09-15 transaction Form Type: 4 transaction Code: M equity Swap Involved: false transaction Shares: 6829 transaction Price Per Share: 0.00 transaction Acquired Disposed Code: D id: F1 expiration Date: 2026-09-15 underlying Security Title: Class A Common Stock underlying Security Shares: 6829 shares Owned Following Transaction: 0 direct Or Indirect Ownership: D
Restricted Stock Units (derivative)	Koester Jennifer	2026-09-15	M	Exercise or conversion	8269	0.00	8,270	2 days	Filed terms security Title: Restricted Stock Units id: F2 transaction Date: 2026-09-15 transaction Form Type: 4 transaction Code: M equity Swap Involved: false transaction Shares: 8269 transaction Price Per Share: 0.00 transaction Acquired Disposed Code: D id: F2 expiration Date: 2027-09-15 underlying Security Title: Class A Common Stock underlying Security Shares: 8269 shares Owned Following Transaction: 8270 direct Or Indirect Ownership: D
Performance Restricted Stock Units (derivative)	Koester Jennifer	2026-09-15	M	Exercise or conversion	20487	0.00	0	2 days	Filed terms security Title: Performance Restricted Stock Units id: F4 transaction Date: 2026-09-15 transaction Form Type: 4 transaction Code: M equity Swap Involved: false transaction Shares: 20487 transaction Price Per Share: 0.00 transaction Acquired Disposed Code: D id: F4 expiration Date: 2026-09-15 underlying Security Title: Class A Common Stock underlying Security Shares: 20487 shares Owned Following Transaction: 0 direct Or Indirect Ownership: D

Class A Common Stock

Owner: Koester Jennifer
Date: 2026-09-15
Code: M
Action: Exercise or conversion
Quantity: 11988
Price: 0
Following holdings: 42,906
Reporting delay: 2 days
Filed terms and references: Filed terms
security Title: Class A Common Stock
transaction Date: 2026-09-15
transaction Form Type: 4
transaction Code: M
equity Swap Involved: false
transaction Shares: 11988
transaction Price Per Share: 0
id: F1
transaction Acquired Disposed Code: A
shares Owned Following Transaction: 42906
direct Or Indirect Ownership: D

Class A Common Stock

Owner: Koester Jennifer
Date: 2026-09-15
Code: M
Action: Exercise or conversion
Quantity: 6829
Price: 0
Following holdings: 49,735
Reporting delay: 2 days
Filed terms and references: Filed terms
security Title: Class A Common Stock
transaction Date: 2026-09-15
transaction Form Type: 4
transaction Code: M
equity Swap Involved: false
transaction Shares: 6829
transaction Price Per Share: 0
id: F1
transaction Acquired Disposed Code: A
shares Owned Following Transaction: 49735
direct Or Indirect Ownership: D

Class A Common Stock

Owner: Koester Jennifer
Date: 2026-09-15
Code: M
Action: Exercise or conversion
Quantity: 8269
Price: 0
Following holdings: 58,004
Reporting delay: 2 days
Filed terms and references: Filed terms
security Title: Class A Common Stock
transaction Date: 2026-09-15
transaction Form Type: 4
transaction Code: M
equity Swap Involved: false
transaction Shares: 8269
transaction Price Per Share: 0
id: F2
transaction Acquired Disposed Code: A
shares Owned Following Transaction: 58004
direct Or Indirect Ownership: D

Class A Common Stock

Owner: Koester Jennifer
Date: 2026-09-15
Code: F
Action: Tax/exercise withholding
Quantity: 13826
Price: 144.12
Following holdings: 44,178
Reporting delay: 2 days
Filed terms and references: Filed terms
security Title: Class A Common Stock
transaction Date: 2026-09-15
transaction Form Type: 4
transaction Code: F
equity Swap Involved: false
id: F3
transaction Shares: 13826
transaction Price Per Share: 144.12
transaction Acquired Disposed Code: D
shares Owned Following Transaction: 44178
direct Or Indirect Ownership: D

Class A Common Stock

Owner: Koester Jennifer
Date: 2026-09-15
Code: M
Action: Exercise or conversion
Quantity: 20487
Price: 0
Following holdings: 64,665
Reporting delay: 2 days
Filed terms and references: Filed terms
security Title: Class A Common Stock
transaction Date: 2026-09-15
transaction Form Type: 4
transaction Code: M
equity Swap Involved: false
transaction Shares: 20487
transaction Price Per Share: 0
id: F4
transaction Acquired Disposed Code: A
shares Owned Following Transaction: 64665
direct Or Indirect Ownership: D

Class A Common Stock

Owner: Koester Jennifer
Date: 2026-09-15
Code: F
Action: Tax/exercise withholding
Quantity: 10458
Price: 144.12
Following holdings: 54,207
Reporting delay: 2 days
Filed terms and references: Filed terms
security Title: Class A Common Stock
transaction Date: 2026-09-15
transaction Form Type: 4
transaction Code: F
equity Swap Involved: false
id: F5
transaction Shares: 10458
transaction Price Per Share: 144.12
transaction Acquired Disposed Code: D
shares Owned Following Transaction: 54207
direct Or Indirect Ownership: D

Restricted Stock Units (derivative)

Owner: Koester Jennifer
Date: 2026-09-15
Code: M
Action: Exercise or conversion
Quantity: 11988
Price: 0.00
Following holdings: 0
Reporting delay: 2 days
Filed terms and references: Filed terms
security Title: Restricted Stock Units
id: F1
transaction Date: 2026-09-15
transaction Form Type: 4
transaction Code: M
equity Swap Involved: false
transaction Shares: 11988
transaction Price Per Share: 0.00
transaction Acquired Disposed Code: D
id: F1
expiration Date: 2026-09-15
underlying Security Title: Class A Common Stock
underlying Security Shares: 11988
shares Owned Following Transaction: 0
direct Or Indirect Ownership: D

Restricted Stock Units (derivative)

Owner: Koester Jennifer
Date: 2026-09-15
Code: M
Action: Exercise or conversion
Quantity: 6829
Price: 0.00
Following holdings: 0
Reporting delay: 2 days
Filed terms and references: Filed terms
security Title: Restricted Stock Units
id: F1
transaction Date: 2026-09-15
transaction Form Type: 4
transaction Code: M
equity Swap Involved: false
transaction Shares: 6829
transaction Price Per Share: 0.00
transaction Acquired Disposed Code: D
id: F1
expiration Date: 2026-09-15
underlying Security Title: Class A Common Stock
underlying Security Shares: 6829
shares Owned Following Transaction: 0
direct Or Indirect Ownership: D

Restricted Stock Units (derivative)

Owner: Koester Jennifer
Date: 2026-09-15
Code: M
Action: Exercise or conversion
Quantity: 8269
Price: 0.00
Following holdings: 8,270
Reporting delay: 2 days
Filed terms and references: Filed terms
security Title: Restricted Stock Units
id: F2
transaction Date: 2026-09-15
transaction Form Type: 4
transaction Code: M
equity Swap Involved: false
transaction Shares: 8269
transaction Price Per Share: 0.00
transaction Acquired Disposed Code: D
id: F2
expiration Date: 2027-09-15
underlying Security Title: Class A Common Stock
underlying Security Shares: 8269
shares Owned Following Transaction: 8270
direct Or Indirect Ownership: D

Performance Restricted Stock Units (derivative)

Owner: Koester Jennifer
Date: 2026-09-15
Code: M
Action: Exercise or conversion
Quantity: 20487
Price: 0.00
Following holdings: 0
Reporting delay: 2 days
Filed terms and references: Filed terms
security Title: Performance Restricted Stock Units
id: F4
transaction Date: 2026-09-15
transaction Form Type: 4
transaction Code: M
equity Swap Involved: false
transaction Shares: 20487
transaction Price Per Share: 0.00
transaction Acquired Disposed Code: D
id: F4
expiration Date: 2026-09-15
underlying Security Title: Class A Common Stock
underlying Security Shares: 20487
shares Owned Following Transaction: 0
direct Or Indirect Ownership: D

Purchases, sales, grants and option exercises are different transactions. The reported code identifies the action; it does not establish a motive.

Filing context

Quantities and prices are shown in the units filed. No trade value is inferred from their product.
Koester Jennifer: President & COO, Sphere.
F1: Each restricted stock unit ("RSU") was granted on April 22, 2024 under the Sphere Entertainment Co. ("SPHR") 2020 Employee Stock Plan, as amended (the "2020 Employee Stock Plan"), and represents a right to receive one share of Class A Common Stock or the cash equivalent thereof. One-third of the RSUs vested and were settled on September 13, 2024. One-third of the RSUs vested and were settled on September 15, 2025. The remaining one-third of the RSUs vested and were settled on September 15, 2026.
F2: Each RSU was granted on August 27, 2024 under the 2020 Employee Stock Plan and represents a right to receive one share of Class A Common Stock or the cash equivalent thereof. One-third of the RSUs vested and were settled on September 15, 2025. One-third of the RSUs vested and were settled on September 15, 2026. The remaining one-third of the RSUs are scheduled to vest and settle on September 15, 2027.
F3: Represents RSUs of SPHR withheld to satisfy tax withholding obligations in connection with the vesting and settlement of RSUs described in footnotes 1 and 2, exempt under Rule 16b-3.
F4: Each performance restricted stock unit ("PSU") was granted on April 22, 2024 under the 2020 Employee Stock Plan and represents a right to receive one share of Class A Common Stock or the cash equivalent thereof. The Compensation Committee of the Board of Directors of SPHR deemed such PSUs earned at 100% of target. The PSUs vested and were settled on September 15, 2026.
F5: Represents PSUs of SPHR withheld to satisfy tax withholding obligations in connection with the vesting and settlement of PSUs described in footnote 4, exempt under Rule 16b-3.

Original sources

SEC ownership filing

Prepared automatically from public filing data. Report a correction.

Security

Owner

Date

Code

Action

Quantity

Price

Following holdings

Reporting delay

Filed terms and references

Class A Common Stock

Koester Jennifer

2026-09-15

Exercise or conversion

11988

42,906

2 days

Filed terms

security Title: Class A Common Stock
transaction Date: 2026-09-15
transaction Form Type: 4
transaction Code: M
equity Swap Involved: false
transaction Shares: 11988
transaction Price Per Share: 0
id: F1
transaction Acquired Disposed Code: A
shares Owned Following Transaction: 42906
direct Or Indirect Ownership: D

Class A Common Stock

Koester Jennifer

2026-09-15

Exercise or conversion

6829

49,735

2 days

Filed terms

security Title: Class A Common Stock
transaction Date: 2026-09-15
transaction Form Type: 4
transaction Code: M
equity Swap Involved: false
transaction Shares: 6829
transaction Price Per Share: 0
id: F1
transaction Acquired Disposed Code: A
shares Owned Following Transaction: 49735
direct Or Indirect Ownership: D

Class A Common Stock

Koester Jennifer

2026-09-15

Exercise or conversion

8269

58,004

2 days

Filed terms

security Title: Class A Common Stock
transaction Date: 2026-09-15
transaction Form Type: 4
transaction Code: M
equity Swap Involved: false
transaction Shares: 8269
transaction Price Per Share: 0
id: F2
transaction Acquired Disposed Code: A
shares Owned Following Transaction: 58004
direct Or Indirect Ownership: D

Class A Common Stock

Koester Jennifer

2026-09-15

Tax/exercise withholding

13826

144.12

44,178

2 days

Filed terms

security Title: Class A Common Stock
transaction Date: 2026-09-15
transaction Form Type: 4
transaction Code: F
equity Swap Involved: false
id: F3
transaction Shares: 13826
transaction Price Per Share: 144.12
transaction Acquired Disposed Code: D
shares Owned Following Transaction: 44178
direct Or Indirect Ownership: D

Class A Common Stock

Koester Jennifer

2026-09-15

Exercise or conversion

20487

64,665

2 days

Filed terms

security Title: Class A Common Stock
transaction Date: 2026-09-15
transaction Form Type: 4
transaction Code: M
equity Swap Involved: false
transaction Shares: 20487
transaction Price Per Share: 0
id: F4
transaction Acquired Disposed Code: A
shares Owned Following Transaction: 64665
direct Or Indirect Ownership: D

Class A Common Stock

Koester Jennifer

2026-09-15

Tax/exercise withholding

10458

144.12

54,207

2 days

Filed terms

security Title: Class A Common Stock
transaction Date: 2026-09-15
transaction Form Type: 4
transaction Code: F
equity Swap Involved: false
id: F5
transaction Shares: 10458
transaction Price Per Share: 144.12
transaction Acquired Disposed Code: D
shares Owned Following Transaction: 54207
direct Or Indirect Ownership: D

Restricted Stock Units (derivative)

Koester Jennifer

2026-09-15

Exercise or conversion

11988

0.00

2 days

Filed terms

security Title: Restricted Stock Units
id: F1
transaction Date: 2026-09-15
transaction Form Type: 4
transaction Code: M
equity Swap Involved: false
transaction Shares: 11988
transaction Price Per Share: 0.00
transaction Acquired Disposed Code: D
id: F1
expiration Date: 2026-09-15
underlying Security Title: Class A Common Stock
underlying Security Shares: 11988
shares Owned Following Transaction: 0
direct Or Indirect Ownership: D

Restricted Stock Units (derivative)

Koester Jennifer

2026-09-15

Exercise or conversion

6829

0.00

2 days

Filed terms

security Title: Restricted Stock Units
id: F1
transaction Date: 2026-09-15
transaction Form Type: 4
transaction Code: M
equity Swap Involved: false
transaction Shares: 6829
transaction Price Per Share: 0.00
transaction Acquired Disposed Code: D
id: F1
expiration Date: 2026-09-15
underlying Security Title: Class A Common Stock
underlying Security Shares: 6829
shares Owned Following Transaction: 0
direct Or Indirect Ownership: D

Restricted Stock Units (derivative)

Koester Jennifer

2026-09-15

Exercise or conversion

8269

0.00

8,270

2 days

Filed terms

security Title: Restricted Stock Units
id: F2
transaction Date: 2026-09-15
transaction Form Type: 4
transaction Code: M
equity Swap Involved: false
transaction Shares: 8269
transaction Price Per Share: 0.00
transaction Acquired Disposed Code: D
id: F2
expiration Date: 2027-09-15
underlying Security Title: Class A Common Stock
underlying Security Shares: 8269
shares Owned Following Transaction: 8270
direct Or Indirect Ownership: D

Performance Restricted Stock Units (derivative)

Koester Jennifer

2026-09-15

Exercise or conversion

20487

0.00

2 days

Filed terms

security Title: Performance Restricted Stock Units
id: F4
transaction Date: 2026-09-15
transaction Form Type: 4
transaction Code: M
equity Swap Involved: false
transaction Shares: 20487
transaction Price Per Share: 0.00
transaction Acquired Disposed Code: D
id: F4
expiration Date: 2026-09-15
underlying Security Title: Class A Common Stock
underlying Security Shares: 20487
shares Owned Following Transaction: 0
direct Or Indirect Ownership: D

Filing context

Quantities and prices are shown in the units filed. No trade value is inferred from their product.

Koester Jennifer: President & COO, Sphere.

F1: Each restricted stock unit ("RSU") was granted on April 22, 2024 under the Sphere Entertainment Co. ("SPHR") 2020 Employee Stock Plan, as amended (the "2020 Employee Stock Plan"), and represents a right to receive one share of Class A Common Stock or the cash equivalent thereof. One-third of the RSUs vested and were settled on September 13, 2024. One-third of the RSUs vested and were settled on September 15, 2025. The remaining one-third of the RSUs vested and were settled on September 15, 2026.

F2: Each RSU was granted on August 27, 2024 under the 2020 Employee Stock Plan and represents a right to receive one share of Class A Common Stock or the cash equivalent thereof. One-third of the RSUs vested and were settled on September 15, 2025. One-third of the RSUs vested and were settled on September 15, 2026. The remaining one-third of the RSUs are scheduled to vest and settle on September 15, 2027.

F3: Represents RSUs of SPHR withheld to satisfy tax withholding obligations in connection with the vesting and settlement of RSUs described in footnotes 1 and 2, exempt under Rule 16b-3.

F4: Each performance restricted stock unit ("PSU") was granted on April 22, 2024 under the 2020 Employee Stock Plan and represents a right to receive one share of Class A Common Stock or the cash equivalent thereof. The Compensation Committee of the Board of Directors of SPHR deemed such PSUs earned at 100% of target. The PSUs vested and were settled on September 15, 2026.

F5: Represents PSUs of SPHR withheld to satisfy tax withholding obligations in connection with the vesting and settlement of PSUs described in footnote 4, exempt under Rule 16b-3.