Sesen Bio, Inc.

SESNNASDAQHealthcare

$0.63

+$0.04(+7.29%)

Market Cap$127955770

P/E Ratio—

52W High$0.965

52W Low$0.365

Avg Volume1.2M

Open$0.57

Beta0.83

Employees Ownership Insider Trades

Sesen Bio, Inc. (SESN) Number of Employees – History & Annual Headcount

Annual SEC headcount, year-over-year change, and per-employee efficiency — chart and full history below.

SEC EDGAR · FMP · SESN · as of Mar 31, 2025

Latest filing snapshot

+29+170.59%vs prior year

Sesen Bio, Inc. (SESN) employee data is sourced from the annual SEC 10-K filing. As of 2024, full-time employees only. Global consolidated headcount. View SEC filing ↗

SEC 10-K·Period end: 2024-12-31·Full-time · Global

Total Employees

Change (1Y)

+29

Growth % (1Y)

+170.59%

Revenue / Employee

—

Net Income / Employee

$-1.31M

Market Cap

$128M

SESN Employee Count

2013 – 2024 · Annual · SEC filing

Source: SEC annual filings · Hover bar to view year data · Click to view original filing

Employees History

Filing Date	Period End	Employees	Change (1Y)	Growth (1Y)
2025-03-31	2024-12-31	46	+29	+170.59%
2023-02-28	2022-12-31	17	-18	-51.43%
2022-02-28	2021-12-31	35	+8	+29.63%
2021-03-15	2020-12-31	27	+2	+8.00%
2020-03-16	2019-12-31	25	+1	+4.17%
2019-03-01	2018-12-31	24	+7	+41.18%
2018-04-02	2017-12-31	17	-17	-50.00%
2017-03-24	2016-12-31	34	+15	+78.95%
2016-03-25	2015-12-31	19	-2	-9.52%
2015-03-06	2014-12-31	21	+6	+40.00%

▸ Source: SEC Annual Reports (Form 10-K / 20-F). Employee counts as of fiscal year end. Click the ↗ icon at the end of a row to open the original SEC filing in a new tab.

Related Companies — Employee Count

Biotechnology

#SymbolCompanyEmployeesMkt Cap

NGM

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138$129M #2

KNTE

Kinnate Biopharma Inc.

84$125M #3

DBTX

Decibel Therapeutics, Inc.

68$123M #4

PRDS

Pardes Biosciences, Inc.

Source: /stock-peers + /profile.fullTimeEmployees · Click row → /employees · Sorted by headcount · SESN peer comparison

About SESN employees

SESN Employees · Headcount

Sesen Bio, Inc. (SESN) employee data is sourced from the annual SEC 10-K filing. As of 2024, Sesen Bio, Inc. had 46 full-time employees globally. Full-time employees only. Global consolidated headcount.

Sesen Bio, Inc.'s workforce increased by 29 (170.59%) in 2024 compared to the prior fiscal year. The historical trend reflects the company's expansion and contraction cycles.

Revenue Financial statements Net income SEC filings Price history Forecast & ratings Ownership Earnings

Frequently Asked Questions

SESN Employees · 5 questions

As of the latest SEC 10-K filing (2024), Sesen Bio, Inc. had 46 full-time employees globally. This figure is sourced from the company's mandatory annual disclosure to the SEC.

Sesen Bio, Inc. employee counthow many employees does Sesen Bio, Inc. haveSESN total employees 2024

▸ Data source: FMP /historical-employee-count · SEC EDGAR annual filings · As reported · Global consolidated headcount · As of 2025-03-31