AltMountain

Baker Brothers Life Sciences LP

New York, NY · CIK 1363364 · Managed by Baker Brothers Investments

Baker Brothers Life Sciences LP is a private investment fund based in New York, New York. Its most recent Form D, filed Jul 1, 2026, reports no sales yet. The filing does not set a minimum investment. It relies on the Section 3(c)(7) exclusion, so investors generally must be qualified purchasers. The offering uses Rule 506(b), which does not permit general solicitation. Related persons named in the filing include Felix Baker; Baker Brothers Life Sciences Capital, L.P; Julian Baker.

Total raised
$0Cumulative sales reported on Form D
Investors
0
First sale
—
Minimum investment
None set
Who can invest
Qualified purchasersSection 3(c)(7): generally $5M+ in investments
Offering exemption
Rule 506(b)No general advertising
Key people and entities
Felix Baker; Baker Brothers Life Sciences Capital, L.P; Julian Baker
Latest Form D
Jul 1, 2026

From SEC filings, not verified. This page republishes the fund's Form D as filed. It is not an offer, solicitation or recommendation, and AltMountain has not reviewed the fund. “Raised” is cumulative sales, not current assets or performance. Returns are not part of SEC filings. Private funds are speculative, illiquid and generally limited to accredited investors or qualified purchasers. Full disclosures · Request a correction

Raise history

$3,309,319,415Aug 13, 2014: $37,000,000 raisedFeb 17, 2016: $0 raisedJul 12, 2016: $0 raisedJul 2, 2018: $0 raisedJul 1, 2020: $0 raisedJul 1, 2022: $0 raisedJul 14, 2023: $0 raisedAug 12, 2024: $3,309,319,415 raisedOct 14, 2025: $0 raisedJul 1, 2026: $0 raisedAug 2014Jul 2026
FiledFilingTotal raisedInvestorsSource
Jul 1, 2026First notice$00SEC.gov ↗
Oct 14, 2025First notice$00SEC.gov ↗
Aug 12, 2024Amendment$3,309,319,415101SEC.gov ↗
Jul 14, 2023First notice$00SEC.gov ↗
Jul 1, 2022First notice$00SEC.gov ↗
Jul 1, 2020First notice$00SEC.gov ↗
Jul 2, 2018First notice$00SEC.gov ↗
Jul 12, 2016First notice$00SEC.gov ↗
Feb 17, 2016First notice$00SEC.gov ↗
Aug 13, 2014First notice$37,000,0003SEC.gov ↗

10 Form D filings in the SEC's electronic records (2008 onward), the earliest on Aug 13, 2014. Each filing reports the cumulative amount sold and the number of investors to that date, as the fund filed it. Not verified, and not the fund's current assets. Source: U.S. Securities and Exchange Commission, Form D data sets.

Questions about Baker Brothers Life Sciences LP

What is the minimum investment for Baker Brothers Life Sciences LP?

Baker Brothers Life Sciences LP's latest Form D, filed Jul 1, 2026, does not set a minimum investment. Managers can still require one in the offering documents.

Who can invest in Baker Brothers Life Sciences LP?

Baker Brothers Life Sciences LP is generally open only to qualified purchasers (generally individuals with at least $5 million in investments), because it relies on Section 3(c)(7). It uses Rule 506(b), which does not allow general advertising.

How much has Baker Brothers Life Sciences LP raised?

Baker Brothers Life Sciences LP's latest Form D, filed Jul 1, 2026, reports no sales yet.

Where is Baker Brothers Life Sciences LP based?

Baker Brothers Life Sciences LP is based in New York, New York and is managed by Baker Brothers Investments.

Size compared with every private investment fund

This fund hasn't reported any sales yet.

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