Form 3 - Initial statement of beneficial ownership of securities:
SEC Accession No. 0000899243-17-025151
Filing Date
2017-11-01
Accepted
2017-11-01 19:50:22
Documents
1
Period of Report
2017-11-01

Document Format Files

Seq Description Document Type Size
1 FORM 3 SUBMISSION doc3.html 3  
1 FORM 3 SUBMISSION doc3.xml 3 11535
  Complete submission text file 0000899243-17-025151.txt   14333
Mailing Address 25 FIRST ST STE 303 CAMBRIDGE MA 02141
Business Address 25 FIRST ST STE 303 CAMBRIDGE MA 02141 6175882695
Atlas Venture Associates IX, LLC (Reporting) CIK: 0001671207 (see all company filings)

State of Incorp.: DE | Fiscal Year End: 1012
Type: 3 | Act: 34 | File No.: 001-38266 | Film No.: 171170369

Mailing Address 25 FIRST ST STE 303 CAMBRIDGE MA 02141
Business Address 25 FIRST ST STE 303 CAMBRIDGE MA 02141 6175882695
Atlas Venture Associates IX, L.P. (Reporting) CIK: 0001671208 (see all company filings)

State of Incorp.: DE | Fiscal Year End: 1012
Type: 3 | Act: 34 | File No.: 001-38266 | Film No.: 171170367

Mailing Address 25 FIRST ST STE 303 CAMBRIDGE MA 02141
Business Address 25 FIRST ST STE 303 CAMBRIDGE MA 02141 6175882695
Atlas Venture Fund IX, L.P. (Reporting) CIK: 0001671219 (see all company filings)

State of Incorp.: DE | Fiscal Year End: 1012
Type: 3 | Act: 34 | File No.: 001-38266 | Film No.: 171170368

Mailing Address 675 MASSACHUSETTS AVENUE 14TH FLOOR CAMBRIDGE MA 02139
Business Address 675 MASSACHUSETTS AVENUE 14TH FLOOR CAMBRIDGE MA 02139 857-242-1600
Spero Therapeutics, Inc. (Issuer) CIK: 0001701108 (see all company filings)

EIN.: 000000000 | State of Incorp.: DE | Fiscal Year End: 1231
SIC: 2834 Pharmaceutical Preparations