ALLEVA LAWRENCE M

PrivateCIK: 1553053
Location

NEWTON, MA

ALLEVA LAWRENCE M reported 2 transactions at MERSANA THERAPEUTICS, INC.

Review the transaction codes below to understand the nature of each event.

InsiderALLEVA LAWRENCE MCIK 1553053
Director
Since Sep 2018
-15.91K
Net shares
Net seller
$0.00
Total acquired
0
Open market trades
0B · 0S
24
Total transactions
15.91K disposed
Non-Derivative Transactions2

Common Stock

Direct
U · U

Shares

578.00

Price / share

Trade value

% of position

New position
1/6/2026
578.000.00

Common Stock

Indirect
U · U

Shares

84.00

Price / share

Trade value

% of position

New position
1/6/2026
84.000.00
Total

Net shares

662.00

Net value

$0.00

Derivative Transactions22

Stock Option (right to buy)

Direct
D · Disposition
Converts to

Common Stock

2.46K shares

Shares

2.46K

Strike price

9.0775

Held after

0.00

Exercisable

1/6/2026

Stock Option (right to buy)

Direct
D · Disposition
Converts to

Common Stock

800.00 shares

Shares

800.00

Strike price

437.50

Held after

0.00

Exercisable

1/6/2026

Stock Option (right to buy)

Direct
D · Disposition
Converts to

Common Stock

142.00 shares

Shares

142.00

Strike price

434.75

Held after

0.00

Exercisable

1/6/2026

Stock Option (right to buy)

Direct
D · Disposition
Converts to

Common Stock

400.00 shares

Shares

400.00

Strike price

306.75

Held after

0.00

Exercisable

1/6/2026

Stock Option (right to buy)

Direct
D · Disposition
Converts to

Common Stock

544.00 shares

Shares

544.00

Strike price

107.75

Held after

0.00

Exercisable

1/6/2026

Stock Option (right to buy)

Direct
D · Disposition
Converts to

Common Stock

1K shares

Shares

1K

Strike price

107.75

Held after

0.00

Exercisable

1/6/2026

Stock Option (right to buy)

Direct
D · Disposition
Converts to

Common Stock

450.00 shares

Shares

450.00

Strike price

134.00

Held after

0.00

Exercisable

1/6/2026

Stock Option (right to buy)

Direct
D · Disposition
Converts to

Common Stock

368.00 shares

Shares

368.00

Strike price

572.50

Held after

0.00

Exercisable

1/6/2026

Stock Option (right to buy)

Direct
D · Disposition
Converts to

Common Stock

133.00 shares

Shares

133.00

Strike price

527.25

Held after

0.00

Exercisable

1/6/2026

Stock Option (right to buy)

Direct
D · Disposition
Converts to

Common Stock

1K shares

Shares

1K

Strike price

372.50

Held after

0.00

Exercisable

1/6/2026

Stock Option (right to buy)

Direct
D · Disposition
Converts to

Common Stock

546.00 shares

Shares

546.00

Strike price

161.00

Held after

0.00

Exercisable

1/6/2026

Stock Option (right to buy)

Direct
D · Disposition
Converts to

Common Stock

1.80K shares

Shares

1.80K

Strike price

90.50

Held after

0.00

Exercisable

1/6/2026

Stock Option (right to buy)

Direct
D · Disposition
Converts to

Common Stock

181.00 shares

Shares

181.00

Strike price

106.25

Held after

0.00

Exercisable

1/6/2026

Stock Option (right to buy)

Direct
D · Disposition
Converts to

Common Stock

734.00 shares

Shares

734.00

Strike price

216.00

Held after

0.00

Exercisable

1/6/2026

Stock Option (right to buy)

Direct
D · Disposition
Converts to

Common Stock

215.00 shares

Shares

215.00

Strike price

85.50

Held after

0.00

Exercisable

1/6/2026

Stock Option (right to buy)

Direct
D · Disposition
Converts to

Common Stock

561.00 shares

Shares

561.00

Strike price

31.50

Held after

0.00

Exercisable

1/6/2026

Stock Option (right to buy)

Direct
D · Disposition
Converts to

Common Stock

310.00 shares

Shares

310.00

Strike price

56.75

Held after

0.00

Exercisable

1/6/2026

Stock Option (right to buy)

Direct
D · Disposition
Converts to

Common Stock

159.00 shares

Shares

159.00

Strike price

110.50

Held after

0.00

Exercisable

1/6/2026

Stock Option (right to buy)

Direct
D · Disposition
Converts to

Common Stock

2.20K shares

Shares

2.20K

Strike price

56.50

Held after

0.00

Exercisable

1/6/2026

Stock Option (right to buy)

Direct
D · Disposition
Converts to

Common Stock

358.00 shares

Shares

358.00

Strike price

49.25

Held after

0.00

Exercisable

1/6/2026

Stock Option (right to buy)

Direct
D · Disposition
Converts to

Common Stock

384.00 shares

Shares

384.00

Strike price

45.75

Held after

0.00

Exercisable

1/6/2026

Stock Option (right to buy)

Direct
D · Disposition
Converts to

Common Stock

500.00 shares

Shares

500.00

Strike price

35.00

Held after

0.00

Exercisable

1/6/2026
ALLEVA LAWRENCE M — Insider Transaction (Form 4) Filed Jan 6, 2026 | Finecho