278 investors have funded 67 Cybersecurity companies head-officed in Boston, across 546 rounds (Apr 2005 – Dec 2025). They are ranked by how many Boston companies in this market they have actually backed.
"In Boston" describes the companies, not the investor: most of the money in any city comes from somewhere else, and the Where the money comes from section below shows exactly where it came from here.
Ranked by companies backed in this market and city, then by round count. "Led" counts rounds recorded with this investor as lead.
| # | Investor | Based in | Stages here | Companies | Rounds | Led | Latest | Portfolio total |
|---|---|---|---|---|---|---|---|---|
| 1 | .406 Ventures | Boston, United States | Series ASeedSeries B | 6 | 18 | 10 | Aug 2023 | 89 |
| 2 | General Catalyst | San Francisco, United States | Series ASeedSeries B | 6 | 13 | 5 | Mar 2025 | 855 |
| 3 | Accel | Palo Alto, United States | SeedSeries ASeries B | 5 | 14 | 5 | Mar 2025 | 1,133 |
| 4 | Bain Capital Ventures | Boston, United States | Series ASeries BSeries C | 4 | 8 | 5 | Jul 2025 | 395 |
| 5 | Accomplice | Boston, United States | Series ASeedSeries B | 4 | 7 | 3 | Oct 2025 | 153 |
| 6 | Bessemer Venture Partners | Redwood City, United States | Series ASeries BSeries C | 3 | 10 | 4 | Jan 2021 | 781 |
| 7 | Intel Capital | Santa Clara, United States | Series BSeries CSeries D | 3 | 6 | 4 | Jun 2022 | 764 |
| 8 | Flybridge Capital Partners | New York City, United States | UnattributedSeries CSeries B | 3 | 6 | 3 | Dec 2022 | 173 |
| 9 | Dell Technologies Capital | Palo Alto, United States | SeedSeries E+Series A | 3 | 6 | 2 | Jun 2022 | 102 |
| 10 | Citi Ventures | New York City, United States | Series BSeries CSeries D | 3 | 5 | — | Jul 2021 | 160 |
| 11 | Evolution Equity Partners | New York City, United States | Series CSeries BSeed | 3 | 5 | 2 | May 2025 | 54 |
| 12 | Techstars | New York City, United States | Seed | 3 | 3 | 2 | Jun 2023 | 3,580 |
| 13 | Underscore VC | Boston, United States | Seed | 3 | 3 | 2 | Nov 2021 | 52 |
| 14 | NightDragon | San Francisco, United States | Series BSeries DSeries E+ | 3 | 3 | 3 | Jun 2022 | 26 |
| 15 | M12 | San Francisco, United States | SeedSeries BSeries C | 2 | 5 | 2 | May 2025 | 230 |
| 16 | Ten Eleven Ventures | Boston, United States | Series CSeries DSeries E+ | 2 | 5 | 1 | Mar 2025 | 62 |
| 17 | Glasswing Ventures | Boston, United States | Series BSeries ASeed | 2 | 5 | 1 | Oct 2025 | 39 |
| 18 | Fairhaven Capital | Cambridge, United States | Series ASeries BSeries C | 2 | 5 | 1 | Nov 2017 | 27 |
| 19 | Spark Capital | San Francisco, United States | Series ASeries BSeed | 2 | 4 | — | Dec 2025 | 322 |
| 20 | Atlas Venture | Cambridge, United States | SeedSeries A | 2 | 4 | 3 | Aug 2015 | 302 |
| 21 | Warburg Pincus | New York City, United States | Series DSeries E+ | 2 | 4 | 2 | Mar 2025 | 331 |
| 22 | Index Ventures | London, United Kingdom | Series CSeries A | 2 | 3 | 2 | Dec 2025 | 639 |
| 23 | Insight Partners | New York City, United States | Series CSeries A | 2 | 3 | 1 | Jun 2021 | 762 |
| 24 | F-Prime Capital | Cambridge, United States | Series ASeries CSeries B | 2 | 3 | 1 | Aug 2018 | 306 |
| 25 | TCV | Menlo Park, United States | Series CSeries D | 2 | 3 | — | Feb 2016 | 202 |
| 26 | March Capital | Santa Monica, United States | Series DSeries CSeries E+ | 2 | 3 | 2 | Jun 2022 | 76 |
| 27 | WndrCo | Los Angeles, United States | Series E+UnattributedSeries D | 2 | 3 | 1 | Jun 2022 | 100 |
| 28 | LLR Partners | Philadelphia, United States | Series ASeries CSeries D | 2 | 3 | 2 | Oct 2020 | 103 |
| 29 | Pillar VC | Boston, United States | Series ASeries B | 2 | 3 | 2 | Aug 2022 | 60 |
| 30 | Koch Disruptive Technologies | Wichita, United States | Series E+SeedSeries A | 2 | 3 | 1 | Oct 2025 | 58 |
| 31 | Ascent Venture Partners | Bedford, United States | Series B | 2 | 3 | 3 | Apr 2018 | 45 |
| 32 | Geodesic Capital | Foster City, United States | Series E+Series A | 2 | 3 | — | Sep 2021 | 49 |
| 33 | Okta | San Francisco, United States | Series DSeries C | 2 | 3 | — | Jul 2021 | 40 |
| 34 | Atlassian | Sydney, Australia | Series E+Series C | 2 | 3 | — | May 2022 | 49 |
| 35 | Mendoza Ventures | Brookline, United States | Seed | 2 | 3 | 2 | Apr 2023 | 8 |
| 36 | Goldman Sachs | New York City, United States | Series CSeries A | 2 | 2 | 1 | Jun 2021 | 695 |
| 37 | Battery Ventures | Boston, United States | Series ASeries B | 2 | 2 | 2 | Nov 2021 | 458 |
| 38 | Eight Roads Ventures | London, United Kingdom | Series CSeries A | 2 | 2 | 2 | Sep 2017 | 333 |
| 39 | Founder Collective | Cambridge, United States | SeedUnattributed | 2 | 2 | 1 | Apr 2018 | 336 |
| 40 | FirstMark | New York City, United States | SeedSeries A | 2 | 2 | 2 | Aug 2022 | 183 |
| 41 | Amplify Partners | Menlo Park, United States | Series ASeed | 2 | 2 | 1 | Oct 2020 | 129 |
| 42 | Greenspring Associates | Owings Mills, United States | Series E+Series D | 2 | 2 | 1 | May 2021 | 112 |
| 43 | Fin Capital | San Francisco, United States | Series BSeed | 2 | 2 | 1 | Apr 2023 | 95 |
| 44 | Presidio Ventures | Santa Clara, United States | Series BSeries A | 2 | 2 | 1 | Dec 2025 | 85 |
| 45 | ServiceNow | Santa Clara, United States | Series E+ | 2 | 2 | 2 | Feb 2023 | 60 |
| 46 | Akamai | Cambridge, United States | Seed | 2 | 2 | — | Mar 2022 | 20 |
| 47 | Boldstart Ventures | Miami, United States | SeedSeries ASeries B | 1 | 9 | 3 | Dec 2022 | 89 |
| 48 | Tiger Global Management | New York City, United States | Series CSeries DSeries E+ | 1 | 5 | 2 | Dec 2022 | 791 |
| 49 | Google Ventures | Mountain View, United States | Series BSeries DSeries E+ | 1 | 4 | 2 | Mar 2021 | 736 |
| 50 | Menlo Ventures | Menlo Park, United States | Series DSeries CSeries B | 1 | 4 | 2 | Jun 2018 | 417 |
| 51 | Canaan | San Francisco, United States | Series ASeries DSeries E+ | 1 | 4 | 1 | Sep 2021 | 379 |
| 52 | Salesforce Ventures | San Francisco, United States | Series CSeries DSeries E+ | 1 | 4 | — | Sep 2021 | 364 |
| 53 | Coatue | New York City, United States | Series CSeries DSeries E+ | 1 | 4 | — | Sep 2021 | 312 |
| 54 | Summit Partners | Boston, United States | Series DSeries E+ | 1 | 4 | 2 | Jan 2021 | 295 |
| 55 | DFJ Growth | Menlo Park, United States | Series BSeries CSeries D | 1 | 4 | 1 | Jun 2022 | 83 |
| 56 | Common Angels | Boston, United States | SeedSeries ASeries B | 1 | 4 | 2 | Mar 2012 | 41 |
| 57 | Kleiner Perkins | Menlo Park, United States | Series ASeries BSeries C | 1 | 3 | 3 | Sep 2015 | 666 |
| 58 | Greycroft | New York City, United States | Series ASeries BSeries C | 1 | 3 | — | Jun 2020 | 452 |
| 59 | Balderton Capital | London, United Kingdom | Series ASeries BSeries C | 1 | 3 | 1 | May 2021 | 244 |
| 60 | Foundry | Boulder, United States | Series ASeries BSeries C | 1 | 3 | 2 | May 2022 | 203 |
| 61 | North Bridge Venture Partners | Needham, United States | Series ASeries BSeries C | 1 | 3 | 3 | Sep 2015 | 142 |
| 62 | LocalGlobe | London, United Kingdom | SeedSeries ASeries B | 1 | 3 | 1 | Jan 2019 | 208 |
| 63 | 83NORTH | London, United Kingdom | Series BSeries CSeries D | 1 | 3 | 1 | Apr 2021 | 74 |
| 64 | Homebrew | Burlingame, United States | Series ASeries B | 1 | 3 | 1 | Nov 2021 | 112 |
| 65 | Globespan Capital Partners | Boston, United States | Series CSeries BSeries A | 1 | 3 | 2 | Sep 2016 | 81 |
| 66 | Drive Capital | Columbus, United States | Series ASeries BSeries C | 1 | 3 | 1 | Jun 2020 | 97 |
| 67 | Stripes | New York City, United States | Series CSeries DSeries E+ | 1 | 3 | 1 | Mar 2021 | 88 |
| 68 | Singtel Innov8 | Singapore, Singapore | Series DSeries CSeries B | 1 | 3 | 1 | Jun 2018 | 83 |
| 69 | Commonwealth Capital Ventures | Woburn, United States | Series BSeries ASeed | 1 | 3 | 2 | Jun 2015 | 45 |
| 70 | Arsenal Growth Equity | Winter Park, United States | Series BSeries CSeries D | 1 | 3 | — | Oct 2020 | 27 |
| 71 | Data Point Capital | Boston, United States | Series BSeries A | 1 | 3 | 2 | Oct 2021 | 30 |
| 72 | Addition Capital | London, United Kingdom | Series DSeries E+ | 1 | 3 | 1 | Sep 2021 | 18 |
| 73 | VCET | Burlington, United States | Series ASeries B | 1 | 3 | — | Nov 2017 | 6 |
| 74 | Sequoia Capital | Menlo Park, United States | Series BSeries C | 1 | 2 | 1 | May 2021 | 1,568 |
| 75 | Khosla Ventures | Menlo Park, United States | Series CSeries A | 1 | 2 | — | Oct 2013 | 680 |
| 76 | Greylock Partners | Menlo Park, United States | SeedSeries A | 1 | 2 | — | Dec 2025 | 471 |
| 77 | GGV Capital | Menlo Park, United States | Series DSeries C | 1 | 2 | 1 | Jun 2018 | 438 |
| 78 | CRV | Palo Alto, United States | SeedSeries A | 1 | 2 | — | Dec 2025 | 381 |
| 79 | Temasek | Singapore, Singapore | Series E+ | 1 | 2 | — | Sep 2021 | 450 |
| 80 | Polaris Partners | Boston, United States | Series A | 1 | 2 | 2 | Aug 2023 | 330 |
| 81 | BlackRock | New York City, United States | Series E+ | 1 | 2 | — | Sep 2021 | 283 |
| 82 | Comcast Ventures | San Francisco, United States | Series CSeries B | 1 | 2 | 1 | Sep 2016 | 219 |
| 83 | Scale Venture Partners | Foster City, United States | Series BSeries C | 1 | 2 | 1 | Sep 2017 | 177 |
| 84 | Craft Ventures | San Francisco, United States | Unattributed | 1 | 2 | 1 | Jun 2022 | 197 |
| 85 | Amadeus Capital | London, United Kingdom | SeedSeries A | 1 | 2 | — | Mar 2018 | 139 |
| 86 | Polychain | San Francisco, United States | SeedSeries A | 1 | 2 | 2 | Jul 2023 | 186 |
| 87 | Viola Group | Herzliya, Israel | SeedSeries A | 1 | 2 | 1 | Oct 2025 | 148 |
| 88 | TTV Capital | Atlanta, United States | Series A | 1 | 2 | — | May 2020 | 97 |
| 89 | Flourish | Redwood City, United States | Series ASeries B | 1 | 2 | 1 | Nov 2021 | 85 |
| 90 | CoinFund | Brooklyn, United States | Series A | 1 | 2 | 1 | Jul 2023 | 113 |
| 91 | Flare Capital Partners | Boston, United States | Series A | 1 | 2 | 1 | Aug 2023 | 71 |
| 92 | Susquehanna Growth Equity | Bala Cynwyd, United States | Series CSeries D | 1 | 2 | 1 | Apr 2021 | 89 |
| 93 | Liberty Global | London, United Kingdom | Series CSeries B | 1 | 2 | 1 | Sep 2016 | 70 |
| 94 | Sands Capital | Arlington, United States | Series E+ | 1 | 2 | 1 | Dec 2022 | 71 |
| 95 | Team8 | New York City, United States | Series BSeed | 1 | 2 | — | May 2025 | 55 |
| 96 | Crane Venture Partners | London, United Kingdom | SeedSeries A | 1 | 2 | — | Mar 2018 | 62 |
| 97 | BBG Ventures | New York City, United States | Seed | 1 | 2 | — | Oct 2022 | 59 |
| 98 | New Science Ventures | New York City, United States | Series ASeries B | 1 | 2 | 2 | Jan 2015 | 47 |
| 99 | Harmony Partners | New York City, United States | Series ASeries B | 1 | 2 | 2 | Jan 2015 | 55 |
| 100 | Grove Ventures | Tel Aviv Yafo, Israel | Series ASeed | 1 | 2 | 1 | Oct 2025 | 34 |
Showing the top 100 of 278. Search the full investor set →
Head office of the investors on this page.
Rounds by stage — where in a company's life this money arrives.
Total disclosed size of each round, not one investor's share.
How active this market has been.
Cybersecurity companies head-officed in Boston that took money from these investors.
| Company | Backers | Rounds | Disclosed | Latest round |
|---|---|---|---|---|
| Snyk snyk.io |
32 | 72 | $15.2B | Series E+ Jan 2023 |
| Manta Network manta.network |
26 | 28 | $214.1M | Series A Jul 2023 |
| Immuta immuta.com |
25 | 41 | $2.5B | Series E+ May 2023 |
| Tessian tessian.com |
17 | 29 | $1.2B | Series C Jul 2021 |
| Fuze fuze.com |
12 | 22 | $1.5B | Series E+ Jan 2021 |
| BitSight bitsight.com |
11 | 26 | $1B | Series E+ Sep 2021 |
| Transmit Security transmitsecurity.com |
9 | 9 | $4.9B | Series A Jun 2021 |
| Aura aura.com |
8 | 15 | $2.5B | Series E+ Mar 2025 |
| Ox Security ox.security |
8 | 11 | $496M | Series B May 2025 |
| Threat Stack threatstack.com |
8 | 16 | $296.3M | Series C Sep 2017 |
| Apperian apperian.com |
8 | 18 | $177.6M | Series C Sep 2015 |
| Onapsis onapsis.com |
7 | 14 | $469.2M | Series D Oct 2020 |
| Hummingbird hummingbird.co |
7 | 12 | $164.8M | Series B Nov 2021 |
| Mend mend.io |
6 | 11 | $427M | Series D Apr 2021 |
| OneLayer onelayer.com |
6 | 9 | $190.9M | Series A Oct 2025 |
| RiskRecon riskrecon.com |
6 | 10 | $164M | Series B Aug 2018 |
| Nebulock nebulock.io |
6 | 6 | $51M | Seed Jul 2025 |
| BastionZero bastionzero.com |
6 | 6 | $22.5M | Seed Mar 2022 |
| Perygee perygee.com |
6 | 7 | $17M | Seed Oct 2022 |
| 7AI 7ai.com |
5 | 8 | $758M | Series A Dec 2025 |
| Tidelift tidelift.com |
5 | 9 | $247.5M | Series C May 2022 |
| Pwnie Express pwnieexpress.com |
5 | 12 | $111.8M | Series B Nov 2017 |
| Ramp rampecdn.com |
5 | 9 | $76.3M | Series C May 2009 |
| Salesroom salesroom.com |
5 | 6 | $42.5M | Unattributed Jun 2022 |
| Wabbi wabbisoft.com |
5 | 5 | $10M | Seed Nov 2021 |
| HaystackID haystackid.com |
5 | 8 | — | Series A Feb 2020 |
| ObserveIT observeit.com |
4 | 6 | $168M | Series B Jul 2018 |
| SimSpace simspace.com |
4 | 5 | $162M | Series A Oct 2025 |
| Black Kite blackkite.com |
4 | 8 | $110M | Series B Oct 2021 |
| CyberSaint Security cybersaint.io |
4 | 6 | $92.9M | Series A Mar 2024 |
| Realm Security realm.security |
4 | 6 | $57M | Series A Dec 2025 |
| Vaultive vaultive.com |
4 | 7 | $55M | Series B Jan 2015 |
| Rezonate rezonate.io |
4 | 4 | $34.8M | Seed Dec 2022 |
| FiVerity fiverity.com |
4 | 5 | $18M | Seed Apr 2023 |
| Macro macro.io |
4 | 4 | $17.2M | Seed Jul 2020 |
| Confirm IO confirm.io |
4 | 4 | $16M | Seed Jul 2015 |
| Krypt krypt.co |
4 | 4 | $4.8M | Seed Jun 2017 |
| Tausight tausight.com |
3 | 6 | $78M | Series A Aug 2023 |
| Edgewise Networks edgewise.net |
3 | 6 | $54M | Series B Jun 2019 |
| JetPatch jetpatch.com |
3 | 5 | $47.2M | Series B Jul 2014 |
| Zilla Security zillasecurity.com |
3 | 3 | $40.5M | Series A Aug 2022 |
| PreVeil preveil.com |
3 | 4 | $34M | Series C Oct 2022 |
| Sym symops.com |
3 | 3 | $27M | Series A Oct 2020 |
| Thundra thundra.io |
3 | 3 | $12M | Series A Dec 2019 |
| Rapid7 rapid7.com |
2 | 5 | $121.2M | Series C Dec 2014 |
| InAuth inauth.com |
2 | 2 | $30.8M | Series A Feb 2016 |
| Cygilant cygilant.com |
2 | 3 | $30.2M | Series C Apr 2017 |
| Barkly barkly.com |
2 | 2 | $25M | Series A Jun 2015 |
| Abine abine.com |
2 | 2 | $12.9M | Series A Jun 2011 |
| Minim Technology minim.com |
2 | 2 | $5M | Unattributed Apr 2018 |
| Date | Investor | Company | Stage | Round size |
|---|---|---|---|---|
| Dec 2025 | Presidio Ventures | Realm Security | Series A | $2M |
| Dec 2025 | Greylock Partners | 7AI | Series A | $130M |
| Dec 2025 | Index VenturesLED | 7AI | Series A | $130M |
| Dec 2025 | Blackstone | 7AI | Series A | $130M |
| Dec 2025 | CRV | 7AI | Series A | $130M |
| Dec 2025 | Spark Capital | 7AI | Series A | $130M |
| Oct 2025 | BTG Pactual | SimSpace | Series A | $39M |
| Oct 2025 | Communitas Capital | SimSpace | Series A | $39M |
| Oct 2025 | L2 Point | SimSpace | Series A | $39M |
| Oct 2025 | McRock Capital | OneLayer | Series A | $28M |
| Oct 2025 | Grove Ventures | OneLayer | Series A | $28M |
| Oct 2025 | Viola Group | OneLayer | Series A | $28M |
| Oct 2025 | Chevron | OneLayer | Series A | $28M |
| Oct 2025 | Maor InvestmentsLED | OneLayer | Series A | $28M |
| Oct 2025 | Koch Disruptive Technologies | OneLayer | Series A | $28M |
| Oct 2025 | Accomplice | Realm Security | Series A | $15M |
| Oct 2025 | Jump CapitalLED | Realm Security | Series A | $15M |
| Oct 2025 | Glasswing Ventures | Realm Security | Series A | $15M |
| Jul 2025 | Zetta Venture Partners | Nebulock | Seed | $8.5M |
| Jul 2025 | Step Function | Nebulock | Seed | $8.5M |
Cybersecurity investors in other cities
Other markets in Boston
Individual angels in the same market