Lowinger Timothy B

CIK 00017097751 companyCAMBRIDGE, MA

SEC Profile

Transactions

Companies

Filings

CIK

0001709775

Recent Transactions

50 trades

Disposition to Issuer
Mersana Therapeutics, Inc.$MRSN
Restricted Stock Units
2026-01-06−750→ 0 total
Disposition to Issuer
Mersana Therapeutics, Inc.$MRSN
Stock Option (right to buy)
2026-01-06−1,834→ 0 total
Disposition to Issuer
Mersana Therapeutics, Inc.$MRSN
Stock Option (right to buy)
2026-01-06−419→ 0 total
Disposition to Issuer
Mersana Therapeutics, Inc.$MRSN
Stock Option (right to buy)
2026-01-06−713→ 0 total
Disposition to Issuer
Mersana Therapeutics, Inc.$MRSN
Stock Option (right to buy)
2026-01-06−275→ 0 total
Disposition to Issuer
Mersana Therapeutics, Inc.$MRSN
Stock Option (right to buy)
2026-01-06−7,959→ 0 total
Disposition to Issuer
Mersana Therapeutics, Inc.$MRSN
Stock Option (right to buy)
2026-01-06−215→ 0 total
Disposition to Issuer
Mersana Therapeutics, Inc.$MRSN
Stock Option (right to buy)
2026-01-06−696→ 0 total
Disposition to Issuer
Mersana Therapeutics, Inc.$MRSN
Stock Option (right to buy)
2026-01-06−6,702→ 0 total
Disposition from Tender
Mersana Therapeutics, Inc.$MRSN
Common Stock
2026-01-06−10,466→ 0 total
Disposition to Issuer
Mersana Therapeutics, Inc.$MRSN
Stock Option (right to buy)
2026-01-06−3,090→ 0 total
Disposition to Issuer
Mersana Therapeutics, Inc.$MRSN
Stock Option (right to buy)
2026-01-06−5,891→ 0 total
Disposition to Issuer
Mersana Therapeutics, Inc.$MRSN
Stock Option (right to buy)
2026-01-06−4,974→ 0 total
Disposition to Issuer
Mersana Therapeutics, Inc.$MRSN
Restricted Stock Units
2026-01-06−192→ 0 total
Disposition to Issuer
Mersana Therapeutics, Inc.$MRSN
Stock Option (right to buy)
2026-01-06−1,040→ 0 total
Disposition to Issuer
Mersana Therapeutics, Inc.$MRSN
Restricted Stock Units
2026-01-06−2,166→ 0 total
Disposition to Issuer
Mersana Therapeutics, Inc.$MRSN
Stock Option (right to buy)
2026-01-06−3,234→ 0 total
Disposition to Issuer
Mersana Therapeutics, Inc.$MRSN
Restricted Stock Units
2026-01-06−1,500→ 0 total
Disposition to Issuer
Mersana Therapeutics, Inc.$MRSN
Stock Option (right to buy)
2026-01-06−920→ 0 total
Disposition to Issuer
Mersana Therapeutics, Inc.$MRSN
Stock Option (right to buy)
2026-01-06−1,578→ 0 total
Disposition to Issuer
Mersana Therapeutics, Inc.$MRSN
Stock Option (right to buy)
2026-01-06−3,047→ 0 total
Disposition to Issuer
Mersana Therapeutics, Inc.$MRSN
Stock Option (right to buy)
2026-01-06−858→ 0 total
Sale
Mersana Therapeutics, Inc.$MRSN
Common Stock
2025-01-16$0.58/sh−8,048→ 257,673 total
Exercise/Conversion
Mersana Therapeutics, Inc.$MRSN
Common Stock
2025-01-15+12,500→ 265,721 total
Award
Mersana Therapeutics, Inc.$MRSN
Restricted Stock Unit
2025-01-15+54,167→ 54,167 total
Exercise/Conversion
Mersana Therapeutics, Inc.$MRSN
Restricted Stock Unit
2025-01-15−7,291→ 0 total
Exercise/Conversion
Mersana Therapeutics, Inc.$MRSN
Common Stock
2025-01-15+7,291→ 253,221 total
Exercise/Conversion
Mersana Therapeutics, Inc.$MRSN
Restricted Stock Unit
2025-01-15−12,500→ 37,500 total
Sale
Mersana Therapeutics, Inc.$MRSN
Common Stock
2025-01-15$0.63/sh−1,794→ 245,930 total
Award
Mersana Therapeutics, Inc.$MRSN
Stock Option (Right to Buy)
2025-01-15+243,750→ 243,750 total
Sale
Mersana Therapeutics, Inc.$MRSN
Common Stock
2025-01-14$0.66/sh−3,483→ 242,932 total
Exercise/Conversion
Mersana Therapeutics, Inc.$MRSN
Common Stock
2025-01-14+4,792→ 247,724 total
Exercise/Conversion
Mersana Therapeutics, Inc.$MRSN
Restricted Stock Unit
2025-01-14−4,792→ 4,791 total
Exercise/Conversion
Mersana Therapeutics, Inc.$MRSN
Common Stock
2025-01-13+9,375→ 246,415 total
Exercise/Conversion
Mersana Therapeutics, Inc.$MRSN
Restricted Stock Unit
2025-01-13−9,375→ 18,750 total
Sale
Mersana Therapeutics, Inc.$MRSN
Common Stock
2024-10-03$1.96/sh−5,598→ 235,642 total
Sale
Mersana Therapeutics, Inc.$MRSN
Common Stock
2024-10-02$2.00/sh−8,089→ 241,240 total
Exercise/Conversion
Mersana Therapeutics, Inc.$MRSN
Restricted Stock Unit
2024-10-01−50,000→ 0 total
Exercise/Conversion
Mersana Therapeutics, Inc.$MRSN
Common Stock
2024-10-01+50,000→ 249,329 total
Sale
Mersana Therapeutics, Inc.$MRSN
Common Stock
2024-01-16$2.71/sh−10,409→ 199,329 total
Award
Mersana Therapeutics, Inc.$MRSN
Restricted Stock Unit
2024-01-15+50,000→ 50,000 total
Award
Mersana Therapeutics, Inc.$MRSN
Stock Option (Right to Buy)
2024-01-15+225,000→ 225,000 total
Exercise/Conversion
Mersana Therapeutics, Inc.$MRSN
Restricted Stock Unit
2024-01-15−7,916→ 0 total
Exercise/Conversion
Mersana Therapeutics, Inc.$MRSN
Restricted Stock Unit
2024-01-15−7,292→ 7,291 total
Exercise/Conversion
Mersana Therapeutics, Inc.$MRSN
Common Stock
2024-01-15+7,916→ 209,738 total
Exercise/Conversion
Mersana Therapeutics, Inc.$MRSN
Common Stock
2024-01-15+7,292→ 201,822 total
Exercise/Conversion
Mersana Therapeutics, Inc.$MRSN
Restricted Stock Unit
2024-01-14−4,792→ 9,583 total
Exercise/Conversion
Mersana Therapeutics, Inc.$MRSN
Common Stock
2024-01-14+4,792→ 194,530 total
Exercise/Conversion
Mersana Therapeutics, Inc.$MRSN
Restricted Stock Unit
2024-01-13−9,375→ 28,125 total
Exercise/Conversion
Mersana Therapeutics, Inc.$MRSN
Common Stock
2024-01-13+9,375→ 189,738 total

Companies

Mersana Therapeutics, Inc.
SVP, Chief Sci.&Tech. Officer
$MRSN

Recent Filings

4
Lowinger Timothy B
Jan 6, 2026

Address

C/O MERSANA THERAPEUTICS, INC. 840 MEMORIAL DRIVE

CAMBRIDGE, MA, 02139

View on SEC.gov