Strand Therapeutics
Strand Therapeutics is a clinical-stage biotech company developing programmable mRNA therapies, with a focus on oncology and autoimmune diseases. It has raised $257M and employs 124 people.
The growth story
Strand Therapeutics grew from 32 to 124 employees between 2021 and 2026, raising $257M along the way, most recently a Series B in August 2025.
About
Strand Therapeutics creates mRNA-based treatments using its Signal Stack platform, which combines circular RNA, self-replicating RNA, targeted delivery, and genetic circuits to improve precision and safety. Its lead program, STX-001, is a self-replicating RNA therapy delivered directly into tumors.
The company has raised $257M, including a Series B round in August 2025. Its workforce of 124 is concentrated in research, which makes up 47 employees.
Founders and leadership
Research is the largest function at Strand Therapeutics, with 47 employees. The company is led by a team with expertise in mRNA therapeutics and biotechnology.
The Strand Therapeutics org chart
Jacob Becraft (Co-Founder and CEO) leads 35 mapped leaders with 7 direct reports. Click +N to expand a team; names link to the person’s public profile.
Departments, and which ones grew
Headcount by function: Research 64 (+7% YoY), Business Development 10 (+25% YoY), Operations 8 (0% YoY), Entrepreneurship 6 (0% YoY), Quality Assurance 4 (+33% YoY), Finance 4 (+100% YoY).
Talent flow
Strand Therapeutics recruits heavily from Moderna, with 15 alumni joining the company. Other top talent sources include Massachusetts Institute of Technology, bluebird bio, and Sanofi. Alumni often move to Convergent Therapeutics and AstraZeneca.
Most common previous employers of Strand Therapeutics staff: Moderna (15), Massachusetts Institute of Technology (7), bluebird bio (7), Sanofi (6), Northeastern University (5), Boston University (5). Former Strand Therapeutics employees most often moved to Convergent Therapeutics (3), AstraZeneca (3), Flagship Pioneering (2), Alltrna (2), IncuScience (1), Chiesi USA (1).
Alumni worth knowing
Web traffic
Traffic mix: 50% direct, 32% search, 12% social, 1% paid.
What this company is made of
Most common skills at Strand Therapeutics: Microsoft Office (41), Research Skills (37), Cell Culture (36), Molecular Biology (35), Polymerase Chain Reaction (PCR) (35), Microsoft Excel (31), Biotechnology (28), Leadership (27).
Where the team actually sits
Strand Therapeutics people are concentrated in Massachusetts, United States (59), Greater Boston (25), United States (4), San Francisco Bay Area (2).
Search footprint
Strand Therapeutics attracts about 667 organic search visits a month, traffic worth roughly $0K a month if bought through ads. It gained 40 ranking keywords and lost 24 in the last period.
What employees say
- Compensation
- 3.90 / 5
- Career opportunities
- 3.90 / 5
- Senior management
- 3.20 / 5
- Work-life balance
- 4.40 / 5
Frequently asked
Strand Therapeutics has 124 employees as of September 2026.
Strand Therapeutics has raised $257M in total, most recently a Series B round in August 2025.
Strand Therapeutics was founded in 2017 by Tasuku Kitada, Ron Weiss, Darrell Irvine.
Jacob Becraft (Co-Founder and CEO) sits at the top of Strand Therapeutics's reporting structure, with 7 direct reports.
The most common previous employers of current Strand Therapeutics staff are Moderna (15 people), Massachusetts Institute of Technology (7 people), bluebird bio (7 people).
Former Strand Therapeutics employees most often move to Convergent Therapeutics (3), AstraZeneca (3), Flagship Pioneering (2).
Strand Therapeutics attracts about 667 organic search visits a month, worth roughly $0K a month in equivalent ad spend.
The most common skills among Strand Therapeutics staff are Microsoft Office, Research Skills, Cell Culture, Molecular Biology, Polymerase Chain Reaction (PCR).
Strand Therapeutics staff are concentrated in Massachusetts, United States (59), Greater Boston (25), United States (4).
Strand Therapeutics has about 64 people in Research, up 7% over the past year, as of September 2026.
Strand Therapeutics has about 10 people in Business Development, up 25% over the past year, as of September 2026.
Computed from 99 current and 110 former Strand Therapeutics profiles, as of September 2026. Source: Crustdata.
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