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RPID

RAPID MICRO BIOSYSTEMS, INC.
Latest close $1.962 of 27 marquee funds currently hold1 CUSIP mapped
Current holders
2
27 funds tracked
Ever held
6
Current + past
New this quarter
0
Exited this quarter
2

Marquee-fund ownership over time

Nov 15, 2021Aug 9, 2024Aug 14, 2025May 15, 2026
Now
2

This quarter's activity

New positions opened

None.

Positions exited

Current holders

Sorted by tenure (longest first)
FundEntry priceLatest closeReturn on entry
Renaissance Technologies$0.85$1.96+130%
Millennium Management re-entered$0.83$1.96+134%

“Return on entry” is the price-only move from the fund's first disclosure to today — it ignores any adds, trims, or dividends. A fund that built its position over multiple quarters has a true cost basis somewhere between entry price and latest close; this figure is the upper bound.

Past holders

Funds that exited at some point
FundEntry → ExitReturn
Citadel Advisors 3× in & out→ $2.07-47%
Point72 Asset Management→ $2.07-47%
Glenview Capital—+0%
D1 Capital Partners→ $3.83-77%

Insider activity

Form 4 — officers, directors, 10%+ owners

Filed within two business days of each transaction by anyone with material insider status at RAPID MICRO BIOSYSTEMS, INC.. Pair with the holders table above as a sanity check: heavy insider buying alongside marquee-fund accumulation is the strongest accumulation signal; heavy insider selling alongside fund exits is the strongest distribution signal.

Filings · last 30d
11
Filings · last 90d
14
Total on file
128
Recent SEC buffer
Most recent
Jun 2, 2026

30d / 90d windows measured from Jun 2, 2026 — the most recent Form 4 on file — not from today.

Showing 15 of 128 recent Form 4 filings. Browse all on EDGAR ↗

Fundamentals

XBRL · RAPID MICRO BIOSYSTEMS, INC.

Annual figures sourced directly from RAPID MICRO BIOSYSTEMS, INC.'s 10-K / 10-Q filings via SEC EDGAR XBRL. Latest fiscal year and the year-over-year change, with up to ten years of history.

Revenue
$33.59M
FY2025+20% YoY
Net income
-$47.12M
FY2025-0% YoY
EPS (diluted)
$-1.05
FY2025+3% YoY
Free cash flow(?)
-$31.91M
FY2025+30% YoY

Recent SEC filings

10-K · 10-Q · 8-K · 13D/G · proxy

The most recent material filings for RAPID MICRO BIOSYSTEMS, INC. — earnings, material events, ownership disclosures, proxy statements. Form 4 insider activity is shown in the panel above.

Trade history

Every open→close lifecycle across tracked funds
FundOpen dateClose dateOpen priceClose price / currentReturn
Citadel AdvisorsQ1 2026Q2 2026$3.94$2.07-47%
Millennium ManagementQ1 2026open$3.94$1.96-50%
Point72 Asset ManagementQ1 2026Q2 2026$3.94$2.07-47%
Citadel AdvisorsQ3 2025Q4 2025$2.82$4.21+49%
Citadel AdvisorsQ1 2025Q2 2025$3.48$3.06-12%
Millennium ManagementQ3 2024Q2 2025$0.83$3.06+266%
Renaissance TechnologiesQ3 2024open$0.85$1.96+130%
Glenview CapitalQ2 2022Q1 2025$0.00—+0%
D1 Capital PartnersQ4 2021Q3 2022$16$3.83-77%
Caveats
  • Covers only the 27 marquee funds tracked here, not the full institutional universe. A “0 holders” reading does not mean unowned.
  • Heavy funds (Renaissance Technologies, Citadel Advisors, Soros Fund Management, Two Sigma Investments, D.E. Shaw, AQR Capital Management, Millennium Management, Point72 Asset Management) use 8-quarter snapshots, so their pre-2024 history is missing.
  • “Current” reflects each fund's most recent 13F — filings lag the actual trade by up to 45 days; positions shown may have changed since.
  • Cost = price at the entry filing date. Re-entered positions show the most recent open lot.
  • Options, ADRs, and unmapped CUSIPs are excluded from the follower-backtest pipeline that produces these snapshots, so certain holding types won't appear here.