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NASDAQ · Health care

Seres Therapeutics, Inc. (MCRB)

Seres Therapeutics, Inc. brought in $1.9M of revenue over the twelve months to June 30, 2026. It posted a net loss of $22.5M. Operating cash flow minus capital spending left $865K of free cash flow in fiscal 2025. At June 30, 2026 it held $15.6M in cash. Its latest periodic report to the SEC is the quarterly report (10-Q) filed on August 5, 2026.

Free, no password. An email when MCRB files with the SEC.

Price
$1.61
-5.29% on the day · November 10, 2026
52-week range $1.59 to $29.98
Market cap
$16.2M
Revenue (last 12 months)
$1.9M
Net margin
-1,192.9%
P/E
2.5
on FY2025 diluted EPS

Key facts about Seres Therapeutics, Inc.

Net worth
Seres Therapeutics, Inc. has a market value (market cap) of $16.2M at the latest share price, and shareholders' equity of $34.5M on its balance sheet at June 30, 2026. A company's "net worth" usually means one of these: what the market pays for all its shares, or its assets minus its liabilities.
Revenue and profit
Over the 12 months to June 30, 2026: revenue $1.9M, net loss $22.5M.
Cash flow
In fiscal 2025 operations brought in $1.1M of cash; after $252K of capital spending, free cash flow was $865K.
Latest report
The latest periodic report (quarterly report, 10-Q) was filed with the SEC on August 5, 2026 and covers the period to June 30, 2026. Open on SEC EDGAR
Next earnings report
Seres Therapeutics, Inc.'s next report was expected around November 4, 2026 and is not on file with the SEC yet.

What Seres Therapeutics, Inc. does

Seres Therapeutics, Inc. is registered with the SEC under industry code SIC 2834 (Pharmaceutical Preparations). Its shares trade on NASDAQ under the ticker MCRB.

Revenue and profit by year

Revenue
FY18: $28.3M $28.3M FY18FY19: $34.5M $34.5M FY19FY20: $33.2M $33.2M FY20FY21: $144.9M $144.9M FY21FY22: $7.1M $7.1M FY22FY23: $0 $0 FY23FY24: $0 $0 FY24FY25: $789K $789K FY25
Net income
FY18: -$98.9M -$98.9M FY18FY19: -$70.3M -$70.3M FY19FY20: -$89.1M -$89.1M FY20FY21: -$65.6M -$65.6M FY21FY22: -$250.2M -$250.2M FY22FY23: -$113.7M -$113.7M FY23FY24: $136K $136K FY24FY25: $5.7M $5.7M FY25

Fiscal years as reported in annual reports. Amounts in USD.

Key figures

Fiscal yearRevenueOperating incomeNet incomeDiluted EPSFree cash flow
2025$789K-$94M$5.7M$0.64$865K
2024$0-$121.3M$136K$0.00-$149M
2023$0-$195.1M-$113.7M-$17.77-$125.3M
2022$7.1M-$179.9M-$250.2M-$46.12-$238.6M
2021$144.9M-$64.5M-$65.6M-$14.38-$2.9M
2020$33.2M-$88.1M-$89.1M-$22.36-$94.2M

Earnings: every quarter and the next report date

Full financial statements: income, balance sheet and cash flow

A report was expected around November 4, 2026 and is not on file yet.

Estimated from its filing rhythm: 52 weeks after its report of November 5, 2025. Not a date the company has announced. See the report calendar · Earnings, quarter by quarter

Where MCRB ranks in Health care

Revenue$789K
#663 of 751 in Health care · Bottom 12%

Latest fiscal year of every company in the sector with the figure reported. Revenue is ranked among companies reporting in US dollars; growth and margins among companies with at least 10 million of revenue. Health care

Latest SEC filings

What Seres Therapeutics, Inc. has filed recently, newest first. Each links to the original document on SEC EDGAR.

  1. August 13, 2026
  2. August 5, 2026
    Quarterly report 10-Q · period to June 30, 2026Revenue was $736K; diluted EPS $0.47 versus -$2.27.
  3. August 5, 2026
  4. August 4, 2026
  5. July 9, 2026
  6. July 8, 2026
  7. July 8, 2026
  8. June 5, 2026
  9. June 1, 2026
  10. May 5, 2026
    Quarterly report 10-Q · period to March 31, 2026Revenue was $358K; diluted EPS -$2.08 versus $3.75.

Recent insider filings (Forms 3, 4 and 144): 10, the latest on August 18, 2026. Insider transactions on SEC

What is MCRB worth? A DCF from its reported cash flow

Insider trades

What the people running Seres Therapeutics, Inc. did with its shares, from the Form 4 filings they must send the SEC within two business days.

Insiders sold $2.2K worth of shares in the last 90 days and bought none on the open market. All of the selling was pre-planned under Rule 10b5-1 trading plans.

Bought (open market)
$0
last 90 days
Sold
$2.2K
last 90 days
Net sold
490
$2.2K
DateInsiderWhatSharesPriceValueFiling
August 17, 2026 DesRosier ThomasSee Remarks Soldpre-planned (10b5-1) 82 $4.55 $373.1 Form 4
August 17, 2026 Henn Matthew RSee Remarks Soldpre-planned (10b5-1) 81 $4.55 $368.6 Form 4
August 17, 2026 Shaff Eric D.Director Soldpre-planned (10b5-1) 263 $4.55 $1.2K Form 4
August 17, 2026 Brady KellySee Remarks Soldpre-planned (10b5-1) 64 $4.55 $291.2 Form 4
August 15, 2026 DesRosier ThomasSee Remarks Exercised options 245 - - Form 4
August 15, 2026 Henn Matthew RSee Remarks Exercised options 238 - - Form 4
August 15, 2026 Shaff Eric D.Director Exercised options 722 - - Form 4
August 15, 2026 Brady KellySee Remarks Exercised options 181 - - Form 4

All insider filings on SEC.gov · Where insiders are buying across the market

Who owns MCRB

Three views from three kinds of SEC filings, each with its own date. They overlap and are not added up.

5% holders

Anyone who owns more than 5% of a class of shares must say so on Schedule 13D (if they may seek to influence the company) or 13G (a passive holder). The latest filing of each holder is shown: 13G filings of the last 2 years, 13D of the last 3.

HolderOf classSharesFiled
Nestlé S.A.13D, may seek influence with 1 related filers 14.29% 21,781,753 October 2, 2024

Latest filings below 5%: Fmr LLC 3.1% (August 6, 2025).

Largest institutional holders

No Form 13F positions imported for this company yet.

Insiders

Reported holdings of insiders who filed a Form 4 in the last 12 months: the shares each one held after their latest reported transaction. This is not the total held by all insiders.

5 insiders reported holding 45,847 shares in total, about $73.8K at the last price.

HolderSharesAs of
Shaff Eric D.Director 12,499 August 17, 2026
Brady KellySee Remarks 8,679 August 17, 2026
Young Teresa L.See Remarks 8,557 February 15, 2026
DesRosier ThomasSee Remarks 8,117 August 17, 2026
Henn Matthew RSee Remarks 7,995 August 17, 2026

Schedule 13D/13G filings on SEC.gov

All filings on SEC EDGAR

Questions about MCRB

What does Seres Therapeutics, Inc. do?

Seres Therapeutics, Inc. is a company in the Health care sector, listed on NASDAQ as MCRB. Its shares trade on NASDAQ under the ticker MCRB.

What is Seres Therapeutics, Inc.'s net worth?

Seres Therapeutics, Inc. has a market value (market cap) of $16.2M at the latest share price, and shareholders' equity of $34.5M on its balance sheet at June 30, 2026. A company's "net worth" usually means one of these: what the market pays for all its shares, or its assets minus its liabilities.

Is Seres Therapeutics, Inc. profitable?

No. Over the twelve months to June 30, 2026 it reported a net loss of $22.5M on revenue of $1.9M.

How much revenue does Seres Therapeutics, Inc. make?

Over the twelve months to June 30, 2026 Seres Therapeutics, Inc. reported revenue of $1.9M.

When did Seres Therapeutics, Inc. last report?

Its most recent periodic report is the quarterly report (10-Q) filed on August 5, 2026. It covers the period to June 30, 2026. Its newest filing of any kind is the insider trade from August 18, 2026.

When is Seres Therapeutics, Inc.'s next earnings report?

Seres Therapeutics, Inc.'s next report was expected around November 4, 2026 and is not on file with the SEC yet.

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Where the numbers come from

Financial figures are the values Seres Therapeutics, Inc. tagged in its own SEC filings (XBRL), taken from the latest filing for each period, so restatements replace older figures. Revenue, profit and cash flow are for full fiscal years unless marked as the last twelve months, which is the sum of the four most recent quarters. Where a company reports only the full year, the fourth quarter is the year minus the first three.

Prices are delayed end-of-day market data in the listing currency, and market cap moves with the price. P/E is shown only when earnings per share are positive. Nothing here is investment advice.