NASDAQ · RPID

Rapid Micro Biosystems, Inc.

Closing price · Nov 13, 2026 $0.651

Latest quarter · ended Jun 30, 2026

Cash got weaker, but sales grew

descriptionFiled Aug 7, 2026

Revenue growthSlower

+10.9%

Sep '24Jun '26

$8.05M vs. $7.26M a year ago

Gross marginBetter

15.0%

Mar '25Jun '26

vs. 3.8% a year ago

Cash from operationsWorse

−$12.7M

Sep '24Jun '26

vs. −$9.7M a year ago

Numbers come from the company's own 10-Q and 10-K reports filed with the SEC. Each bar is one quarter, oldest on the left. The colored bar is the latest. Hover over or tap a bar to see its number.

Smart money pulse

What insiders and funds are doing

Mixed Insiders: as of Nov 13 Funds: as of Jun 30, 2026

account_balance
2 funds bought, 2 sold in the quarter ended Jun 30, 2026, counting funds that hold 500 stocks or fewer and $1M+ of this one. Index funds and banks are left out.
info
9 real insider sales in 12 months. $474K in total, not counting planned sales.

−100 means everyone selling, +100 everyone buying. This is data, not advice.

How the Pulse works

Pulse runs from −100 (everyone selling) to +100 (everyone buying). Half comes from insiders: real buyers vs. real sellers in the last 90 days (Form 4). Half comes from funds: funds that bought vs. funds that sold last quarter (13F). 13F is a snapshot of long positions on the last day of the quarter, filed up to 45 days later. It does not show short positions or trades since then.

Who owns it

35 funds report owning RPID, down from 46

Holdings as of Jun 30, 2026

New6

Added8

Held9

Trimmed12

Sold out17

Last quarter

Who bought and who sold

Apr–Jun 2026

Armistice Capital, LLC

New

Essex Investment Management Co LLC

−59%

Advent International, L.P.

−31%

Evernest Financial Advisors, LLC

+17%

Change in shares held from Mar 31 to Jun 30, 2026, biggest holdings first. Only funds that hold 500 stocks or fewer and $1M+ of this one: index funds and banks own almost everything, so their changes say little. Bars stop at ±100%.

Insider trades · last 12 months

Real buys and sales

● Open-market buy● Open-market sale

Last 12 months. No real trades in the last 6.

Showing 9 real trades. Hidden: 13 stock grants, 3 option exercises. Those happen on a schedule and say little about what an insider thinks. Bigger dot means a bigger trade.

Real trades, newest first

Mar 11 John Wilson COO Open-market sale $41.5K 9,603 sh at $4.32 Sold 3% of stake

Mar 11 Sean Wirtjes CFO Open-market sale $32.3K 7,480 sh at $4.32 Sold 1% of stake

Mar 10 Robert Spignesi President and CEO, Director Open-market sale $73.7K 17,922 sh at $4.11 Sold 2% of stake

Feb 20 Sean Wirtjes CFO Open-market sale $67.6K 17,254 sh at $3.92 Sold 3% of stake

Feb 20 John Wilson COO Open-market sale $21.2K 5,403 sh at $3.92 Sold 2% of stake

Feb 19 Robert Spignesi President and CEO, Director Open-market sale $149K 38,327 sh at $3.89 Sold 3% of stake

Feb 9 Robert Spignesi President and CEO, Director Open-market sale $48.5K 12,840 sh at $3.78 Sold 1% of stake

Feb 9 Sean Wirtjes CFO Open-market sale $22.8K 6,027 sh at $3.78 Sold 1% of stake

Feb 9 John Wilson COO Open-market sale $17.4K 4,610 sh at $3.78 Sold 2% of stake

Showing every filing. Dashed circles are routine: grants, tax withholding, option exercises and planned sales.

Big bets

Funds with a big share of their money in RPID

As of Jun 30, 2026

Fund	Of fund	Value	Change
Abg-wtt Global Life Science Capital Partners GP Ltd	37%	$3.2M	Same

Funds that hold 150 stocks or fewer, where this stock is 3% or more of what they reported. "Of fund" is its share of the fund's 13F value.