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Bakker Juliet Tammenoms
Bakker Juliet Tammenoms
Bakker Juliet Tammenoms insider trades: Rapid Micro Biosystems (RPID) stock buys and sales
Rapid Micro Biosystems Last trade Feb 4, 2026 85 Form 4 filings
$664K
Sold, last 12 months
3 sales
$0
Bought, last 12 months
0 buys
64
Open-market trades
since 2009
20
Companies
last trade 2026
Trades on the price chart
Daily close, with an arrow on each day they bought or sold
Companies
Where Bakker reports to the SEC
RPIDRapid Micro Biosystems
Insider · last filing Feb 6, 2026
-$664K
+$3.0M
CBLLCeribell
Insider · last filing Jun 4, 2026
+$4.0M
RXSTRxSight
Insider · last filing Jun 18, 2026
-$30.7M
+$16.9M
LXEOLexeo Therapeutics
10% Owner · last filing Nov 9, 2023
+$5.0M
VERAVera Therapeutics
10% Owner · last filing Feb 8, 2023
+$27.0M
INZYInozyme Pharma
10% Owner · last filing Apr 21, 2022
+$15.0M
and 14 more companies
Open-market buys and sales
64 trades reported on SEC Form 4, newest first
| Date | Stock | Type | Shares | Price | Value | Holding | Reported |
|---|---|---|---|---|---|---|---|
| Feb 4, 2026 | RPID | ↓ Sell | 49,000 | $3.88 | $190K | Held by Longitude Prime Fund, L.P. | Feb 6, 2026 (2d) |
| Feb 3, 2026 | RPID | ↓ Sell | 101,000 | $4.38 | $442K | Held by Longitude Prime Fund, L.P. | Feb 3, 2026 (0d) |
| Jan 23, 2026 | RPID | ↓ Sell | 7,739 | $4.06 | $31K | Held by Longitude Venture Partners II, L | Feb 3, 2026 (11d) |
| Oct 15, 2024 | CBLL | ↑ Buy | 237,234 | $17.00 | $4.0M | By Longitude Venture Partners IV, L.P. | Oct 16, 2024 (1d) |
| May 17, 2024 | RXST | ↑ Buy | 5,000 | $61.09 | $305K | Direct | May 21, 2024 (4d) |
| Feb 14, 2024 | RXST | ↑ Buy | 8,000 | $50.83 | $407K | Direct | Feb 15, 2024 (1d) |
| Nov 29, 2023 | RXST | ↓ Sell | 494,313 | $29.73 | $14.7M | Indirect | Nov 30, 2023 (1d) |
| Nov 15, 2023 | RXST | ↓ Sell | 500,000 | $27.18 | $13.6M | Indirect | Nov 16, 2023 (1d) |
| Nov 7, 2023 | LXEO | ↑ Buy | 454,545 | $11.00 | $5.0M | By Longitude Venture Partners IV, L.P. | Nov 9, 2023 (2d) |
| Sep 11, 2023 | RXST | ↓ Sell | 32,950 | $30.14 | $993K | Direct | Sep 11, 2023 (0d) |
| Aug 25, 2023 | RXST | ↓ Sell | 16,208 | $29.25 | $474K | Direct | Aug 28, 2023 (3d) |
| Aug 18, 2023 | RXST | ↓ Sell | 33,135 | $29.62 | $982K | Direct | Aug 18, 2023 (0d) |
| Feb 10, 2023 | RXST | ↑ Buy | 480,000 | $12.50 | $6.0M | Indirect | Feb 13, 2023 (3d) |
| Feb 6, 2023 | VERA | ↑ Buy | 1,714,285 | $7.00 | $12.0M | Indirect | Feb 8, 2023 (2d) |
| Apr 19, 2022 | INZY | ↑ Buy | 1,355,000 | $3.69 | $5.0M | By Longitude Venture Partners III, L.P. | Apr 21, 2022 (2d) |
| Feb 10, 2022 | VERA | ↑ Buy | 333,333 | $15.00 | $5.0M | Indirect | Apr 5, 2022 (54d) |
| Feb 2, 2022 | SRRA | ↑ Buy | 175,000 | $27.00 | $4.7M | Indirect | Feb 2, 2022 (0d) |
| Aug 3, 2021 | RXST | ↑ Buy | 625,000 | $16.00 | $10.0M | Indirect | Aug 5, 2021 (2d) |
| Aug 3, 2021 | RXST | ↑ Buy | 12,500 | $16.00 | $200K | Direct | Aug 5, 2021 (2d) |
| Jul 19, 2021 | RPID | ↑ Buy | 150,000 | $20.00 | $3.0M | Held by Longitude Prime Fund, L.P. | Jul 20, 2021 (1d) |
| May 18, 2021 | VERA | ↑ Buy | 909,090 | $11.00 | $10.0M | Indirect | May 18, 2021 (0d) |
| May 11, 2021 | TALS | ↑ Buy | 235,000 | $17.00 | $4.0M | By Longitude Venture Partners III, L.P. | May 11, 2021 (0d) |
| Oct 20, 2020 | EAR | ↑ Buy | 233,333 | $18.00 | $4.2M | Indirect | Oct 22, 2020 (2d) |
| Sep 18, 2020 | AXNX | ↓ Sell | 9,167 | $42.67 | $391K | Direct | Sep 22, 2020 (4d) |
| Aug 28, 2020 | MTEM | ↓ Sell | 3,496 | $10.75 | $38K | Indirect | Sep 1, 2020 (4d) |
| Aug 14, 2020 | AXNX | ↓ Sell | 2,393 | $43.22 | $103K | Direct | Aug 18, 2020 (4d) |
| Jul 28, 2020 | INZY | ↑ Buy | 625,000 | $16.00 | $10.0M | By Longitude Venture Partners III, L.P. | Jul 28, 2020 (0d) |
| Jul 10, 2020 | ETNB | ↑ Buy | 109,090 | $27.50 | $3.0M | Indirect | Jul 14, 2020 (4d) |
| Nov 25, 2019 | MTEM | ↑ Buy | 937,000 | $8.00 | $7.5M | By Longitude Venture Partners III, L.P. | Nov 27, 2019 (2d) |
| Nov 11, 2019 | ETNB | ↑ Buy | 575,000 | $16.00 | $9.2M | Indirect | Nov 13, 2019 (2d) |
| Nov 2, 2018 | AXNX | ↑ Buy | 533,333 | $15.00 | $8.0M | By Longitude Venture Partners III, L.P. | Nov 2, 2018 (0d) |
| Sep 21, 2018 | MTEM | ↑ Buy | 365,000 | $5.50 | $2.0M | By Longitude Venture Partners III, L.P. | Sep 25, 2018 (4d) |
| Jul 2, 2018 | TCDA | ↑ Buy | 131,579 | $19.00 | $2.5M | Longitude Venture Partners II, L.P | Jul 2, 2018 (0d) |
| Jun 25, 2018 | APTX | ↑ Buy | 150,000 | $16.00 | $2.4M | By: Longitude Venture Partners II, L.P. | Jun 26, 2018 (1d) |
| Feb 22, 2018 | AIMT | ↑ Buy | 9,375 | $32.00 | $300K | Direct | Feb 26, 2018 (4d) |
| Dec 8, 2017 | COLL | ↓ Sell | 980,350 | $17.34 | $17.0M | By LVP | Dec 12, 2017 (4d) |
| Dec 8, 2017 | COLL | ↓ Sell | 19,650 | $17.34 | $341K | By LCA | Dec 12, 2017 (4d) |
| Jul 25, 2017 | KALA | ↑ Buy | 215,000 | $15.00 | $3.2M | By Longitude Venture Partners II, L.P. | Jul 27, 2017 (2d) |
| Nov 25, 2016 | CORT | ↓ Sell | 36,214 | $9.34 | $338K | Direct | Nov 25, 2016 (0d) |
| Nov 25, 2016 | CORT | ↓ Sell | 727 | $9.34 | $7K | By LCA | Nov 25, 2016 (0d) |
| Nov 21, 2016 | CORT | ↓ Sell | 533,408 | $9.56 | $5.1M | Direct | Nov 21, 2016 (0d) |
| Nov 21, 2016 | CORT | ↓ Sell | 10,692 | $9.56 | $102K | By LCA | Nov 21, 2016 (0d) |
| Nov 16, 2016 | CORT | ↓ Sell | 171,411 | $9.55 | $1.6M | Direct | Nov 17, 2016 (1d) |
| Nov 16, 2016 | CORT | ↓ Sell | 3,436 | $9.55 | $33K | By LCA | Nov 17, 2016 (1d) |
| Mar 29, 2016 | AIMT | ↑ Buy | 78,504 | $13.87 | $1.1M | By Longitude Venture Partners II, L.P. | Mar 31, 2016 (2d) |
| Aug 11, 2015 | AIMT | ↑ Buy | 312,500 | $16.00 | $5.0M | By: Longitude Venture Partners II, L.P. | Aug 11, 2015 (0d) |
| May 12, 2015 | COLL | ↑ Buy | 196,070 | $12.00 | $2.4M | By Longitude Venture Partners, L.P. | May 14, 2015 (2d) |
| May 12, 2015 | COLL | ↑ Buy | 3,930 | $12.00 | $47K | By Longitude Capital Associates, L.P. | May 14, 2015 (2d) |
| Mar 24, 2015 | CORT | ↓ Sell | 1,085,128 | $5.75 | $6.2M | Direct | Mar 24, 2015 (0d) |
| Mar 20, 2015 | CORT | ↓ Sell | 4,617 | $5.85 | $27K | By LCA | Mar 24, 2015 (4d) |
Each row is one filing's trades in one stock, summed. Shares and prices are as filed, before any later stock split.
Other RPID insiders
Open-market trades in the last 12 months
John J. Addington Wilson
Chief Operating Officer
3 sales
Mar 11, 2026
Sean M Wirtjes
Chief Financial Officer
3 sales
Mar 11, 2026
Robert G. Spignesi Jr.
President and CEO
3 sales
Mar 10, 2026
Longitude Capital Partners II, LLC
Insider
2 sales
Feb 4, 2026
Patrick G Enright
Insider
2 sales
Feb 4, 2026
Longitude Prime Partners, LLC
Insider
2 sales
Feb 4, 2026
Longitude Prime Fund, L.P.
Insider
1 sale
Feb 4, 2026
Longitude Venture Partners II, L.P.
Insider
2 sales
Feb 4, 2026
About Bakker Juliet Tammenoms's insider trades
Bakker Juliet Tammenoms is an insider at Rapid Micro Biosystems (RPID). Since Feb 6, 2009, Bakker has reported 34 open-market purchases worth $143.0M and 30 sales worth $82.2M on SEC Form 4. In the last 12 months: 3 sales ($664K).
Their filings also include other transactions (18 filings), conversions (17 filings), grants and awards (16 filings), option exercises (7 filings). These aren't open-market trades and aren't counted above.
How to read insider trades
Officers, directors and owners of more than 10% of a company must report trades in its stock on SEC Form 4, usually within two business days. Purchases with their own money are the stronger signal: insiders sell for many reasons (taxes, diversification, a house), but buy for one. See every RPID insider trade, the latest insider trades across the market, or cluster buys, when several insiders buy the same stock within days.