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Who

Longitude Capital Partners II, LLC

10% owner

Company insider

Files Form 4 as: 10% owner, Rapid Micro Biosystems; 10% owner, Aptinyx; 10% owner, Aimmune Therapeutics.

Every Form 4 they filed

In numbers

Trades disclosed
20
Buys
2
Sells
5
Bought
$7.4M
Sold
$664K
Companies
3
Companies where not an officer
3
First trade
11 Aug 2015
Last trade
4 Feb 2026
Last filed
6 Feb 2026

Companies traded

Everywhere else they filed: board seats, 10% stakes, other companies
RPID Rapid Micro Biosystems10% owner · Life-science tools · last 4 Feb 20260 buys · 5 sells
Aptinyx10% owner · last 25 Jun 20181 buy · 0 sells
Aimmune Therapeutics10% owner · last 11 Aug 20151 buy · 0 sells

Activity over time

1 Nov 2024 – 1 Oct 2026
30Nov 24May 25Nov 25Apr 26Oct 26

Buys above the line, sells below, each month.

Every trade

TradedCompanyWhatAmount
4 Feb 2026filed 6 Feb 2026RPID Rapid Micro BiosystemsLife-science toolsSEC FORM 4 Sold$190K49,000 at $3.88filing
3 Feb 2026filed 3 Feb 2026RPID Rapid Micro BiosystemsLife-science toolsSEC FORM 4 Sold$117K27,500 at $4.24filing
2 Feb 2026filed 3 Feb 2026RPID Rapid Micro BiosystemsLife-science toolsSEC FORM 4 Sold$117K27,500 at $4.25filing
30 Jan 2026filed 3 Feb 2026RPID Rapid Micro BiosystemsLife-science toolsSEC FORM 4 Sold$209K46,000 at $4.54filing
23 Jan 2026filed 3 Feb 2026RPID Rapid Micro BiosystemsLife-science toolsSEC FORM 4 Code X$31K629,032 at $0.05filing
23 Jan 2026filed 3 Feb 2026RPID Rapid Micro BiosystemsLife-science toolsSEC FORM 4 Sold$31K7,739 at $4.06filing
23 Jan 2026filed 3 Feb 2026RPID Rapid Micro Biosystemsoption or derivative · Life-science toolsSEC FORM 4 Code X—500,000 at $0.00filing
23 Jan 2026filed 3 Feb 2026RPID Rapid Micro Biosystemsoption or derivative · Life-science toolsSEC FORM 4 Code X—129,032 at $0.00filing
25 Jun 2018filed 26 Jun 2018Aptinyxoption or derivativeSEC FORM 4 Code C—28,895,188filing
25 Jun 2018filed 26 Jun 2018Aptinyxoption or derivativeSEC FORM 4 Code C—33,022,786filing
25 Jun 2018filed 26 Jun 2018Aptinyxoption or derivativeSEC FORM 4 Code C—21,946,301filing
25 Jun 2018filed 26 Jun 2018AptinyxSEC FORM 4 Code C—1,047,450filing
25 Jun 2018filed 26 Jun 2018AptinyxSEC FORM 4 Code C—1,197,076filing
25 Jun 2018filed 26 Jun 2018AptinyxSEC FORM 4 Code C—795,553filing
25 Jun 2018filed 26 Jun 2018AptinyxSEC FORM 4 Bought$2.4M150,000 at $16.00filing
11 Aug 2015filed 11 Aug 2015Aimmune TherapeuticsSEC FORM 4 Code C—3,873,530filing
11 Aug 2015filed 11 Aug 2015Aimmune TherapeuticsSEC FORM 4 Code C—3,248,600filing
11 Aug 2015filed 11 Aug 2015Aimmune TherapeuticsSEC FORM 4 Bought$5.0M312,500 at $16.00filing
11 Aug 2015filed 11 Aug 2015Aimmune Therapeuticsoption or derivativeSEC FORM 4 Code C—3,873,530filing
11 Aug 2015filed 11 Aug 2015Aimmune Therapeuticsoption or derivativeSEC FORM 4 Code C—3,248,600filing

News

No headline names them, or the companies they trade most, lately.

Sectors

Health Care5
Not placed2

Buys in green, sells in red, by the company’s sector.

Related people

Richard S. KollenderDirector · Director at Rapid Micro Biosystems, filing Form 4 there in the last year
Robert G. Spignesi Jr.President and CEO · President and CEO at Rapid Micro Biosystems, filing Form 4 there in the last year
Kirk MalloyDirector · Director at Rapid Micro Biosystems, filing Form 4 there in the last year
Melinda Litherland PeiDirector · Director at Rapid Micro Biosystems, filing Form 4 there in the last year
Sean M. WirtjesChief Financial Officer · Chief Financial Officer at Rapid Micro Biosystems, filing Form 4 there in the last year