WELLS DAVID B sold 29.9% of their position (28.64K shares) of TRADE DESK, INC. on the open market

Open‑market sale worth $2.29M — a significant reduction. Review remaining holdings and any 10b5‑1 plan disclosures.

S · 1 sale

WELLS DAVID B

Filed: 5/15/2025ACC: 0001671933-25-000065

InsiderWELLS DAVID BCIK 1507645

→

IssuerTRADE DESK, INC.CIK 1671933

Director

Since Apr 2019

-28.64K

Net shares

Net seller

$2.29M

Total sold

Open market trades

0B · 1S

Total transactions

28.64K acquired · 57.28K disposed

Non-Derivative Transactions13

Class A Common Stock

Direct

M · Option Exercise

+6.99K

Price / share

$58.46

Trade value

$408.62K

% of position

10.4%

5/13/2025

66.98K→73.97K

Class A Common Stock

Direct

M · Option Exercise

+1.39K

Price / share

$58.46

Trade value

$81.26K

% of position

1.9%

5/13/2025

73.97K→75.36K

Class A Common Stock

Direct

M · Option Exercise

+670.00

Price / share

$58.46

Trade value

$39.17K

% of position

0.9%

5/13/2025

75.36K→76.03K

Class A Common Stock

Direct

M · Option Exercise

+220.00

Price / share

$58.46

Trade value

$12.86K

% of position

0.3%

5/13/2025

76.03K→76.25K

Class A Common Stock

Direct

M · Option Exercise

+6.83K

Price / share

$49.03

Trade value

$334.68K

% of position

9.0%

5/13/2025

76.25K→83.08K

Class A Common Stock

Direct

M · Option Exercise

+1.36K

Price / share

$49.03

Trade value

$66.93K

% of position

1.6%

5/13/2025

83.08K→84.45K

Class A Common Stock

Direct

M · Option Exercise

+655.00

Price / share

$49.03

Trade value

$32.11K

% of position

0.8%

5/13/2025

84.45K→85.10K

Class A Common Stock

Direct

M · Option Exercise

+218.00

Price / share

$49.03

Trade value

$10.69K

% of position

0.3%

5/13/2025

85.10K→85.32K

Class A Common Stock

Direct

M · Option Exercise

+7.28K

Price / share

$66.26

Trade value

$482.51K

% of position

8.5%

5/13/2025

85.32K→92.60K

Class A Common Stock

Direct

M · Option Exercise

+1.37K

Price / share

$66.26

Trade value

$91.04K

% of position

1.5%

5/13/2025

92.60K→93.97K

Class A Common Stock

Direct

M · Option Exercise

+1.37K

Price / share

$66.26

Trade value

$91.04K

% of position

1.5%

5/13/2025

93.97K→95.35K

Class A Common Stock

Direct

M · Option Exercise

+274.00

Price / share

$66.26

Trade value

$18.16K

% of position

0.3%

5/13/2025

95.35K→95.62K

Class A Common Stock

Direct

S · Sale

−28.64K

Price / share

$79.88

Trade value

$2.29M

% of position

29.9%

5/13/2025

95.62K→66.98K

Total

Net shares

+0.00

Net value

-$618.55K

Security	Date	Type	Shares	Price / Share	Trade Value	% of Position	Held Before	Held After
Class A Common Stock Direct	5/13/2025	M · Option Exercise	+6.99K	$58.46	$408.62K	10.4%	66.98K	73.97K
Class A Common Stock Direct	5/13/2025	M · Option Exercise	+1.39K	$58.46	$81.26K	1.9%	73.97K	75.36K
Class A Common Stock Direct	5/13/2025	M · Option Exercise	+670.00	$58.46	$39.17K	0.9%	75.36K	76.03K
Class A Common Stock Direct	5/13/2025	M · Option Exercise	+220.00	$58.46	$12.86K	0.3%	76.03K	76.25K
Class A Common Stock Direct	5/13/2025	M · Option Exercise	+6.83K	$49.03	$334.68K	9.0%	76.25K	83.08K
Class A Common Stock Direct	5/13/2025	M · Option Exercise	+1.36K	$49.03	$66.93K	1.6%	83.08K	84.45K
Class A Common Stock Direct	5/13/2025	M · Option Exercise	+655.00	$49.03	$32.11K	0.8%	84.45K	85.10K
Class A Common Stock Direct	5/13/2025	M · Option Exercise	+218.00	$49.03	$10.69K	0.3%	85.10K	85.32K
Class A Common Stock Direct	5/13/2025	M · Option Exercise	+7.28K	$66.26	$482.51K	8.5%	85.32K	92.60K
Class A Common Stock Direct	5/13/2025	M · Option Exercise	+1.37K	$66.26	$91.04K	1.5%	92.60K	93.97K
Class A Common Stock Direct	5/13/2025	M · Option Exercise	+1.37K	$66.26	$91.04K	1.5%	93.97K	95.35K
Class A Common Stock Direct	5/13/2025	M · Option Exercise	+274.00	$66.26	$18.16K	0.3%	95.35K	95.62K
Class A Common Stock Direct	5/13/2025	S · Sale	−28.64K	$79.88	$2.29M	29.9%	95.62K	66.98K
Total			+0.00		-$618.55K

Derivative Transactions12

Stock Option (Right to Buy)

Direct

M · Option Exercise

Converts to

Class A Common Stock

6.99K shares

−6.99K

Strike price

58.458

Held after

0.00

Exercisable

—

5/13/2025

Stock Option (Right to Buy)

Direct

M · Option Exercise

Converts to

Class A Common Stock

1.39K shares

−1.39K

Strike price

58.458

Held after

0.00

Exercisable

—

5/13/2025

Stock Option (Right to Buy)

Direct

M · Option Exercise

Converts to

Class A Common Stock

670.00 shares

−670.00

Strike price

58.458

Held after

0.00

Exercisable

—

5/13/2025

Stock Option (Right to Buy)

Direct

M · Option Exercise

Converts to

Class A Common Stock

220.00 shares

−220.00

Strike price

58.458

Held after

0.00

Exercisable

—

5/13/2025

Stock Option (Right to Buy)

Direct

M · Option Exercise

Converts to

Class A Common Stock

6.83K shares

−6.83K

Strike price

49.03

Held after

0.00

Exercisable

—

5/13/2025

Stock Option (Right to Buy)

Direct

M · Option Exercise

Converts to

Class A Common Stock

1.36K shares

−1.36K

Strike price

49.03

Held after

0.00

Exercisable

—

5/13/2025

Stock Option (Right to Buy)

Direct

M · Option Exercise

Converts to

Class A Common Stock

655.00 shares

−655.00

Strike price

49.03

Held after

0.00

Exercisable

—

5/13/2025

Stock Option (Right to Buy)

Direct

M · Option Exercise

Converts to

Class A Common Stock

218.00 shares

−218.00

Strike price

49.03

Held after

0.00

Exercisable

—

5/13/2025

Stock Option (Right to Buy)

Direct

M · Option Exercise

Converts to

Class A Common Stock

7.28K shares

−7.28K

Strike price

66.26

Held after

0.00

Exercisable

—

5/13/2025

Stock Option (Right to Buy)

Direct

M · Option Exercise

Converts to

Class A Common Stock

1.37K shares

−1.37K

Strike price

66.26

Held after

0.00

Exercisable

—

5/13/2025

Stock Option (Right to Buy)

Direct

M · Option Exercise

Converts to

Class A Common Stock

1.37K shares

−1.37K

Strike price

66.26

Held after

0.00

Exercisable

—

5/13/2025

Stock Option (Right to Buy)

Direct

M · Option Exercise

Converts to

Class A Common Stock

274.00 shares

−274.00

Strike price

66.26

Held after

0.00

Exercisable

—

5/13/2025

Security	Converts To	Date	Type	Shares	Strike Price	Exercisable
Stock Option (Right to Buy) Direct	Class A Common Stock6.99K shares	5/13/2025	M · Option Exercise	−6.99K	58.458	—
Stock Option (Right to Buy) Direct	Class A Common Stock1.39K shares	5/13/2025	M · Option Exercise	−1.39K	58.458	—
Stock Option (Right to Buy) Direct	Class A Common Stock670.00 shares	5/13/2025	M · Option Exercise	−670.00	58.458	—
Stock Option (Right to Buy) Direct	Class A Common Stock220.00 shares	5/13/2025	M · Option Exercise	−220.00	58.458	—
Stock Option (Right to Buy) Direct	Class A Common Stock6.83K shares	5/13/2025	M · Option Exercise	−6.83K	49.03	—
Stock Option (Right to Buy) Direct	Class A Common Stock1.36K shares	5/13/2025	M · Option Exercise	−1.36K	49.03	—
Stock Option (Right to Buy) Direct	Class A Common Stock655.00 shares	5/13/2025	M · Option Exercise	−655.00	49.03	—
Stock Option (Right to Buy) Direct	Class A Common Stock218.00 shares	5/13/2025	M · Option Exercise	−218.00	49.03	—
Stock Option (Right to Buy) Direct	Class A Common Stock7.28K shares	5/13/2025	M · Option Exercise	−7.28K	66.26	—
Stock Option (Right to Buy) Direct	Class A Common Stock1.37K shares	5/13/2025	M · Option Exercise	−1.37K	66.26	—
Stock Option (Right to Buy) Direct	Class A Common Stock1.37K shares	5/13/2025	M · Option Exercise	−1.37K	66.26	—
Stock Option (Right to Buy) Direct	Class A Common Stock274.00 shares	5/13/2025	M · Option Exercise	−274.00	66.26	—