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Form SC 13G - Statement of acquisition of beneficial ownership by individuals:
SEC Accession No. 0001172661-19-000530
Filing Date
2019-02-14
Accepted
2019-02-14 07:53:43
Documents
1

Document Format Files

Seq Description Document Type Size
1 arrowmark-mrsn123118.htm SC 13G 52376
  Complete submission text file 0001172661-19-000530.txt   54035
Mailing Address 840 MEMORIAL DRIVE CAMBRIDGE MA 02139
Business Address 840 MEMORIAL DRIVE CAMBRIDGE MA 02139 617-498-0020
Mersana Therapeutics, Inc. (Subject) CIK: 0001442836 (see all company filings)

IRS No.: 000000000 | State of Incorp.: DE | Fiscal Year End: 1231
Type: SC 13G | Act: 34 | File No.: 005-90033 | Film No.: 19600814
SIC: 2834 Pharmaceutical Preparations

Mailing Address 100 FILLMORE STREET, SUITE 325 DENVER CO 80206
Business Address 100 FILLMORE STREET, SUITE 325 DENVER CO 80206 303.398.2929
ArrowMark Colorado Holdings LLC (Filed by) CIK: 0001483859 (see all company filings)

IRS No.: 392068140 | State of Incorp.: DE | Fiscal Year End: 1231
Type: SC 13G