Bridgeline Digital, Inc.
Other Technology · Woburn, Massachusetts
Bridgeline Digital, Inc. is a other technology company based in Woburn, Massachusetts. It has raised at least $33.0 million across 8 known rounds, of which $17.2 million was reported to the SEC on 8 Form D filings, most recently in 2025.
Helping digital businesses maximise their online revenue by optimizing customer acquisition, conversion and retention.
| Date | Round | Amount | Raised to date | Lead investor | Source |
|---|---|---|---|---|---|
| 2025-04-09 | — | $720K | $33.0M | SEC Form D | |
| 2021-08-02 | — | $2.7M | $32.3M | SEC Form D | |
| 2019-03-14 | — | $10.2M | $29.6M | SEC Form D | |
| 2018-09-19 | — | $941K | $19.4M | SEC Form D | |
| 2016-11-14 | — | $1.1M | $18.4M | SEC Form D | |
| 2016-07-20 | — | $868K | $17.3M | SEC Form D | |
| 2016-05-10 | — | $0 | $16.5M | SEC Form D | |
| 2015-10-30 | — | $665K | $16.5M | SEC Form D | |
| 2014-11-12 | — | $2.0M | $15.8M | SEC Form D | |
| 2014-04-08 | — | $3.0M | $13.8M | SEC Form D | |
| 2013-10-08 | —+1 amd | $3.0M | $10.8M | SEC Form D | |
| 2013-08-07 | — | $604K | $7.8M | SEC Form D | |
| 2013-06-26 | — | $2.3M | $7.2M | SEC Form D | |
| 2012-06-11 | — | $526K | $4.9M | SEC Form D | |
| 2012-06-07 | — | $2.5M | $4.3M | SEC Form D | |
| 2011-10-11 | — | $150K | $1.8M | SEC Form D | |
| 2010-11-08 | — | $1.0M | $1.7M | SEC Form D | |
| 2010-08-24 | — | $675K | $675K | SEC Form D |
SEC rows are Form D filings, where the amount is what was actually sold and amendments update a round rather than adding one. Press rows are split between company-issued releases or wires and editorial or third-party coverage. The total is therefore a floor: a round nobody reported is a round we cannot see. A buyout or control change appears in the timeline but is never added to the total: that money goes to shareholders, not into the company.
Form D is the notice a company files with the SEC when it sells securities without registering them. It reports the amount sold, not a valuation. Figures here are what the filing says. Where a filing is silent, the field is left blank rather than estimated. “Total raised” adds press-reported rounds that never appear in a filing, so it is a floor rather than an audited sum: press amounts are the figures the company announced, and a round nobody reported is a round we cannot see.