Boston Harbor Angels Investments & Fund Profile

Overview

Angel investment group focused on early-stage high-growth companies.

Founded

2004

Deals · 12mo

1

Links

Website LinkedIn X (Twitter)

Stage focus

Seed

Series A

Series B

Geographic focus

United States

Sector focus

Finance

Financial Services

Venture Capital

Investment portfolio

16rounds

LedParticipated

NAME	DATE	SIZE
GelMEDIX	Feb 2026Participated	$13 MSeed
Astrocyte Pharmaceuticals	Aug 2023Participated	$6 MSeries B
Zylö Therapeutics	Jun 2022Participated	$5 MSeries B
Astrocyte Pharmaceuticals	May 2021Led	$6 MSeries A
S'More Date	Jan 2021Participated	$2 MSeed
Zylö Therapeutics	Sep 2019Participated	$4 MSeries A
Astrocyte Pharmaceuticals	Jun 2018Participated	$2 MSeries A
Astrocyte Pharmaceuticals	Jul 2017Led	$2 MSeed
Siamab Therapeutics	Jul 2014Participated	$2 MSeries B
ZetrOZ	Jun 2014Participated	$2 MOther Equity
Sialix Cancer Research	Feb 2014Participated	$1 MOther Equity
Sialix Cancer Research	Jul 2013Participated	$1 MOther Equity
GelMEDIX	Feb 2026Participated	$13 MSeed
Astrocyte Pharmaceuticals	Aug 2023Participated	$6 MSeries B
Zylö Therapeutics	Jun 2022Participated	$5 MSeries B
Astrocyte Pharmaceuticals	May 2021Led	$6 MSeries A
S'More Date	Jan 2021Participated	$2 MSeed
Zylö Therapeutics	Sep 2019Participated	$4 MSeries A
Astrocyte Pharmaceuticals	Jun 2018Participated	$2 MSeries A
Astrocyte Pharmaceuticals	Jul 2017Led	$2 MSeed
Siamab Therapeutics	Jul 2014Participated	$2 MSeries B
ZetrOZ	Jun 2014Participated	$2 MOther Equity
Sialix Cancer Research	Feb 2014Participated	$1 MOther Equity
Sialix Cancer Research	Jul 2013Participated	$1 MOther Equity

16 Items

16

Items

...

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Insights

Time horizon

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Deal Distribution

Boston Harbor Angels: 16 funding rounds are recorded in the selected participation categories. All available history
Round type	Led deals	Participated deals
Seed	1	3
Series A	1	4
Series B	0	4
Other Equity	0	3

Monthly Deal Activity

Boston Harbor Angels: 16 deals are recorded across 198 months. All available history
Month	Deals
May '10	1
Jun '10	0
Jul '10	0
Aug '10	0
Sep '10	0
Oct '10	0
Nov '10	0
Dec '10	0
Jan '11	0
Feb '11	0
Mar '11	0
Apr '11	0
May '11	0
Jun '11	0
Jul '11	0
Aug '11	1
Sep '11	0
Oct '11	0
Nov '11	0
Dec '11	0
Jan '12	0
Feb '12	1
Mar '12	0
Apr '12	0
May '12	0
Jun '12	0
Jul '12	0
Aug '12	0
Sep '12	0
Oct '12	0
Nov '12	0
Dec '12	0
Jan '13	0
Feb '13	0
Mar '13	0
Apr '13	0
May '13	0
Jun '13	1
Jul '13	1
Aug '13	0
Sep '13	0
Oct '13	0
Nov '13	0
Dec '13	0
Jan '14	0
Feb '14	1
Mar '14	0
Apr '14	0
May '14	0
Jun '14	1
Jul '14	1
Aug '14	0
Sep '14	0
Oct '14	0
Nov '14	0
Dec '14	0
Jan '15	0
Feb '15	0
Mar '15	0
Apr '15	0
May '15	0
Jun '15	0
Jul '15	0
Aug '15	0
Sep '15	0
Oct '15	0
Nov '15	0
Dec '15	0
Jan '16	0
Feb '16	0
Mar '16	0
Apr '16	0
May '16	0
Jun '16	0
Jul '16	0
Aug '16	0
Sep '16	0
Oct '16	0
Nov '16	0
Dec '16	0
Jan '17	0
Feb '17	0
Mar '17	0
Apr '17	0
May '17	0
Jun '17	0
Jul '17	1
Aug '17	0
Sep '17	0
Oct '17	0
Nov '17	0
Dec '17	0
Jan '18	0
Feb '18	0
Mar '18	0
Apr '18	0
May '18	0
Jun '18	1
Jul '18	0
Aug '18	0
Sep '18	0
Oct '18	0
Nov '18	0
Dec '18	0
Jan '19	0
Feb '19	0
Mar '19	0
Apr '19	0
May '19	0
Jun '19	0
Jul '19	0
Aug '19	0
Sep '19	1
Oct '19	0
Nov '19	0
Dec '19	0
Jan '20	0
Feb '20	0
Mar '20	0
Apr '20	0
May '20	0
Jun '20	0
Jul '20	0
Aug '20	0
Sep '20	0
Oct '20	0
Nov '20	0
Dec '20	0
Jan '21	1
Feb '21	0
Mar '21	0
Apr '21	0
May '21	1
Jun '21	0
Jul '21	0
Aug '21	0
Sep '21	0
Oct '21	0
Nov '21	0
Dec '21	0
Jan '22	0
Feb '22	0
Mar '22	0
Apr '22	0
May '22	0
Jun '22	1
Jul '22	0
Aug '22	0
Sep '22	0
Oct '22	0
Nov '22	0
Dec '22	0
Jan '23	0
Feb '23	0
Mar '23	0
Apr '23	0
May '23	0
Jun '23	0
Jul '23	0
Aug '23	1
Sep '23	0
Oct '23	0
Nov '23	0
Dec '23	0
Jan '24	0
Feb '24	0
Mar '24	0
Apr '24	0
May '24	0
Jun '24	0
Jul '24	0
Aug '24	0
Sep '24	0
Oct '24	0
Nov '24	0
Dec '24	0
Jan '25	0
Feb '25	0
Mar '25	0
Apr '25	0
May '25	0
Jun '25	0
Jul '25	0
Aug '25	0
Sep '25	0
Oct '25	0
Nov '25	0
Dec '25	0
Jan '26	0
Feb '26	1
Mar '26	0
Apr '26	0
May '26	0
Jun '26	0
Jul '26	0
Aug '26	0
Sep '26	0
Oct '26	0

Sector Breakdown

A deal can appear in multiple sectors, so sector totals may overlap. Capital represents disclosed total round sizes, not fund cheque sizes.

Boston Harbor Angels: Health & Life Sciences is the largest displayed sector by deal count (13 deals). All available history
Sector	Deals
Health & Life Sciences	13
Networks, Cloud & Communication	2
Marketing & Advertising	2
Enterprise Software	2
Cybersecurity & Privacy	1
E-Commerce & Retail	1

Deal Size Distribution

Undisclosed round sizes are excluded. Capital represents total round sizes, not fund cheque sizes.

Boston Harbor Angels: 16 rounds have a disclosed size in the displayed size bands. All available history
Round size band (USD)	Deals
<$5M	11
$5M-$10M	3
$10M-$25M	2
$25M-$50M	0
$50M-$100M	0
$100M-$250M	0
$250M-$500M	0
$500M-$1B	0
$1B+	0

Deals By Geography

Top 1 of 1 regions; European countries are grouped as Europe.

Boston Harbor Angels: United States has the largest recorded deal count among the displayed regions (16 deals). All available history
Region	Deals
United States	16

Co-Investors

Bubble size = shared deals

Click a bubble to open that fund in a new tab.

Shows up to 20 co-investors ranked by shared deals. Deals may be shared with multiple funds, so rows overlap. Capital is total round size, not fund cheque size.

Boston Harbor Angels: 20 co-investors are shown, with Mass Medical Angels sharing 10 recorded deals. All available history
Co-investor	Shared deals
Mass Medical Angels	10
Launchpad Venture Group	7
Beacon Angels	5
SideCar Angels	5
Maine Angels	4
New York Angels	3
North Country Angels	3
Zhi Gao Holding	3
Ariel Southeast Angel Partners	2
Cherrystone Angels	2
DeepWork Capital	2
Desert Angels	2
Granite State Angels	2
Life Science Angels	2
Mid Atlantic Bio Angels	2
Nest.Bio Ventures	2
SCRA Technology Ventures	2
Trend Investment Group	2
VentureSouth	2
AbbVie Ventures	1