CHAMBERS DOUGLAS W (Senior VP-Finance & CAO) sold 41.99K shares of TELEPHONE & DATA SYSTEMS INC /DE/ on the open market

Open‑market sale worth $1.62M. Review remaining holdings and any 10b5‑1 plan disclosures.

S · 1 sale

CHAMBERS DOUGLAS W

Filed: 8/14/2025ACC: 0001739622-25-000008

InsiderCHAMBERS DOUGLAS WCIK 1739622

→

IssuerTELEPHONE & DATA SYSTEMS INC /DE/CIK 1051512

Officer· Senior VP-Finance & CAO

Since Aug 2018

-41.99K

Net shares

Net seller

$1.62M

Total sold

Open market trades

0B · 1S

Total transactions

28.83K acquired · 70.82K disposed

Non-Derivative Transactions4

Common Shares

Direct

M · Option Exercise

+6.63K

Price / share

$30.72

Trade value

$203.80K

% of position

50.4%

8/12/2025

13.15K→19.79K

Common Shares

Direct

M · Option Exercise

+10.59K

Price / share

$29.45

Trade value

$311.93K

% of position

53.5%

8/12/2025

19.79K→30.38K

Common Shares

Direct

M · Option Exercise

+11.60K

Price / share

$27.79

Trade value

$322.39K

% of position

38.2%

8/12/2025

30.38K→41.98K

Common Shares

Direct

S · Sale

−41.99K

Price / share

$38.63

Trade value

$1.62M

% of position

New position

8/12/2025

41.99K→0.00

Total

Net shares

−13.17K

Net value

-$784.01K

Security	Date	Type	Shares	Price / Share	Trade Value	% of Position	Held Before	Held After
Common Shares Direct	8/12/2025	M · Option Exercise	+6.63K	$30.72	$203.80K	50.4%	13.15K	19.79K
Common Shares Direct	8/12/2025	M · Option Exercise	+10.59K	$29.45	$311.93K	53.5%	19.79K	30.38K
Common Shares Direct	8/12/2025	M · Option Exercise	+11.60K	$27.79	$322.39K	38.2%	30.38K	41.98K
Common Shares Direct	8/12/2025	S · Sale	−41.99K	$38.63	$1.62M	New position	41.99K	0.00
Total			−13.17K		-$784.01K

Derivative Transactions3

Option (Rigft to Buy)

Direct

M · Option Exercise

Converts to

Common Shares

6.63K shares

−6.63K

Strike price

30.72

Held after

0.00

Exercisable

—

8/12/2025

Option (Right to Buy)

Direct

M · Option Exercise

Converts to

Common Shares

11.60K shares

−11.60K

Strike price

27.79

Held after

0.00

Exercisable

—

8/12/2025

Option (Right to Buy)

Direct

M · Option Exercise

Converts to

Common Shares

10.59K shares

−10.59K

Strike price

29.45

Held after

0.00

Exercisable

—

8/12/2025

Security	Converts To	Date	Type	Shares	Strike Price	Exercisable
Option (Rigft to Buy) Direct	Common Shares6.63K shares	8/12/2025	M · Option Exercise	−6.63K	30.72	—
Option (Right to Buy) Direct	Common Shares11.60K shares	8/12/2025	M · Option Exercise	−11.60K	27.79	—
Option (Right to Buy) Direct	Common Shares10.59K shares	8/12/2025	M · Option Exercise	−10.59K	29.45	—