Spinout versus spinoff: What's the difference?

When we talk to private sector entrepreneurs and managers, there is much confusion about the difference between employee spinouts and corporate spinoffs. This confusion is due to the ambiguous use of these terms both in practice and in academia (Laplume & Yeganegi, 2024).

 
Corporate Spinoff ("spinoff") is the outcome of corporate decision making processes of organizations (Agarwal, Audretsch, & Sarkar, 2007). A company's managers decide to make a division or subsidiary of the corporation into a separate legal entity with different (albeit often overlapping) owners. Spinoffs are often used to increase corporate coherence and to give growing divisions the independence they need to flourish. Spinoffs are a type of corporate restructuring decision or divestiture. Owners of shares in the parent receive shares in the spinoff, which is a new legal entity that issues new equity. The actual implementation of a spinoff may vary, for example, a pure-play, split-off, or carve-out. The term "starburst" is also used in practice to describe a series of simultaneous or sequential spinoffs.

Employee spinout ("spinout") is the outcome of the independent decisions of employees that leave employment to start a new venture. Neither the parent organizations, nor their investors typically receive any ownership shares in a spinout. Spinouts are owned and controlled by the former employees and their own investors (often venture capitalists or angel investors). Because they often are not "authorized" or "sanctioned" by their parent organizations, spinouts may be met with hostility from parent firm managers and owners (Walter, Heinrichs, & Walter, 2014). Parent organizations may litigate against spinouts for violating fiduciary duties, breaching non-competes, non-solicitations, and non-disclosures, or infringing on intellectual property (e.g., patents). Spinouts may be considered by primary parent firm stakeholders to be disloyal or treacherous, as in the case of the Traitorous Eight. Nonetheless, spinouts led by employees have been among the most successful types of startups (e.g., Zoom, Apple, Intel, and Zillow) owning to the knowledge they transfer from their parents. The most successful spinouts often involve larger founding teams that transfer knowledge and networks with them from their previous employment.  

In the education and research industries, an academic spinoff or spinout usually involve university professors or researchers, but also typically also provide equity to universities or sign a licensing agreement. There are also public sector spinouts from government research laboratories, for example. 
Spinouts are related but distinct from hybrid entrepreneurship, which involves working on a startup as a side gig while remaining employed.

Sources:

Agarwal, R., Audretsch, D., and Sarkar, M. B. (2007). The process of creative construction: knowledge spillovers, entrepreneurship, and economic growth. Strategic Entrepreneurship Journal, 1(3–4), 263–286.

 

Laplume, A. O. and Yeganegi, S. (2024). Spinout ventures: Transitioning from employees to entrepreneurs. Business Expert Press.

Walter, S. G., Heinrichs, S., and Walter, A. (2014). Parent hostility and spin‐out performance. Strategic Management Journal, 35(13), 2031-2042.

Video about the "treacherous eight":