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Robert G. Jr. Spignesi

RPID
PRESIDENT AND CEO · RAPID MICRO BIOSYSTEMS, INC. · CIK 0001853904
FILING MIX · LIFETIME64%/36%
BUYS
34
SELLS
19
TOTAL VALUE
$830.8K
COMPANIES
1
ACTIVE SINCE
Feb 2022
HOLDINGS NOW
1,190,571
AVG SELL PX
$3.10
TRADE KIND
SHOWING 53 / 53
Trades · vs SPY
Loading price series…
Performance · forward returns vs SPY
21 backtested trades · 8 horizons · 20 pending
Forward-return performance of every backtestable P/S trade by Robert G. Jr. Spignesi, measured at 8 horizons from 7 days to 2 years. Deduped per economic event so co-filings count once. Excess return = trade return minus SPY return over the same window.
HORIZONTRADESWIN RATEINSIDER RETURNSPY RETURNMEAN EXCESSMEDIAN EXCESST-STAT
7d21+71.43%+8.20%-0.39%+8.59%+11.89%—
14d21+61.90%+11.17%+0.84%+10.32%+13.50%—
30d21+85.71%+0.17%+2.88%-2.71%+3.55%—
60d21+100.00%-5.91%+5.39%-11.30%-4.63%—
90d21+71.43%+1.43%+6.59%-5.17%+1.64%—
180d21(3 pending)+83.33%+11.18%+8.59%+2.59%+1.92%—
1y21(8 pending)+7.69%+9.87%+25.45%-15.58%-40.04%—
2y21(9 pending)+91.67%+217.63%+46.09%+171.54%+201.89%—
How to read this: Insider Returnis the average raw return of the filer's trades over the horizon. SPY Return is what SPY did over those same windows — reference only, not a comparison. The headline alpha number is Mean Excess = Insider − SPY; green means the filer beat SPY, red means they trailed it. Win rate is the share of individual trades where the filer beat SPY. T-statvalues above 2 mean the alpha is unlikely to be chance given the sample size. "Pending" counts trades where the horizon hasn't elapsed yet; their stats are not included in the row average.
Holdings over time
RPID · 1,190,571 shares · as of May 29, 2026
0306,524613,049919,5731,226,0972023202420252026SHARES HELD
Trading cadence · quarterly flow
BUY ● SELL ●
2022
2022
2022
2022
2023
2023
2023
2023
2024
2024
2024
2024
2025
2025
2025
2025
2026
2026
FLOW · 34 buys / 19 sellsCOVERAGE · 18 quarters
Form 4 filings · all activity
COMPANYTYPESHARESPRICEVALUEHELD AFTERTRADE DATEFILEDDETAILS
RPID
RAPID MICRO BIOSYSTEMS, INC.
PURCHASEGRANT
Stock grant
12,787$1.96$25.0K1,190,571May 29, 2026Jun 2, 2026 ↗View →
RPID
RAPID MICRO BIOSYSTEMS, INC.
PURCHASEGRANT
Stock grant
12,787——12,787May 29, 2026Jun 2, 2026 ↗View →
RPID
RAPID MICRO BIOSYSTEMS, INC.
PURCHASEGRANT
Stock grant
12,787——12,787May 29, 2026Jun 2, 2026 ↗View →
RPID
RAPID MICRO BIOSYSTEMS, INC.
SALE
PRESIDENT AND CEO
17,922$4.11$73.7K1,169,848Mar 10, 2026Mar 12, 2026 ↗View →
RPID
RAPID MICRO BIOSYSTEMS, INC.
SALE
PRESIDENT AND CEO
38,327$3.89$148.9K1,187,770Feb 19, 2026Feb 20, 2026 ↗View →
RPID
RAPID MICRO BIOSYSTEMS, INC.
PURCHASEGRANT
Stock grant
264,000——1,226,097Feb 11, 2026Feb 13, 2026 ↗View →
RPID
RAPID MICRO BIOSYSTEMS, INC.
PURCHASEGRANT
Stock grant
528,000——528,000Feb 11, 2026Feb 13, 2026 ↗View →
RPID
RAPID MICRO BIOSYSTEMS, INC.
SALE
PRESIDENT AND CEO
12,840$3.78$48.6K962,097Feb 9, 2026Feb 10, 2026 ↗View →
RPID
RAPID MICRO BIOSYSTEMS, INC.
SALE
PRESIDENT AND CEO
7,833——0Oct 17, 2025Oct 21, 2025 ↗View →
RPID
RAPID MICRO BIOSYSTEMS, INC.
SALE
PRESIDENT AND CEO
2,072$3.08$6.4K971,878Oct 17, 2025Oct 21, 2025 ↗View →
RPID
RAPID MICRO BIOSYSTEMS, INC.
SALE
PRESIDENT AND CEO
4,774$3.08$14.7K974,937Oct 17, 2025Oct 21, 2025 ↗View →
RPID
RAPID MICRO BIOSYSTEMS, INC.
SALE
PRESIDENT AND CEO
3,400——0Oct 17, 2025Oct 21, 2025 ↗View →
RPID
RAPID MICRO BIOSYSTEMS, INC.
PURCHASE
PRESIDENT AND CEO
3,400$0.75$2.5K973,950Oct 17, 2025Oct 21, 2025 ↗View →
RPID
RAPID MICRO BIOSYSTEMS, INC.
PURCHASE
PRESIDENT AND CEO
7,833$0.75$5.9K979,711Oct 17, 2025Oct 21, 2025 ↗View →
RPID
RAPID MICRO BIOSYSTEMS, INC.
PURCHASE
PRESIDENT AND CEO
25,145——982,431Jul 14, 2025Jul 15, 2025 ↗View →
RPID
RAPID MICRO BIOSYSTEMS, INC.
SALE
PRESIDENT AND CEO
11,881$3.32$39.5K970,550Jul 14, 2025Jul 15, 2025 ↗View →
RPID
RAPID MICRO BIOSYSTEMS, INC.
SALE
PRESIDENT AND CEO
11,874$3.33$39.5K957,286Jul 11, 2025Jul 15, 2025 ↗View →
RPID
RAPID MICRO BIOSYSTEMS, INC.
PURCHASE
PRESIDENT AND CEO
25,145——969,160Jul 11, 2025Jul 15, 2025 ↗View →
RPID
RAPID MICRO BIOSYSTEMS, INC.
PURCHASE
PRESIDENT AND CEO
25,145——925,728Jul 10, 2025Jul 10, 2025 ↗View →
RPID
RAPID MICRO BIOSYSTEMS, INC.
SALE
PRESIDENT AND CEO
11,617$3.40$39.5K944,015Jul 10, 2025Jul 10, 2025 ↗View →
RPID
RAPID MICRO BIOSYSTEMS, INC.
PURCHASE
PRESIDENT AND CEO
25,144——911,830Jul 9, 2025Jul 10, 2025 ↗View →
RPID
RAPID MICRO BIOSYSTEMS, INC.
SALE
PRESIDENT AND CEO
11,247$3.51$39.5K900,583Jul 9, 2025Jul 10, 2025 ↗View →
RPID
RAPID MICRO BIOSYSTEMS, INC.
SALE
PRESIDENT AND CEO
10,824$3.51$38.0K886,686Jul 8, 2025Jul 10, 2025 ↗View →
RPID
RAPID MICRO BIOSYSTEMS, INC.
PURCHASE
PRESIDENT AND CEO
25,144——897,510Jul 8, 2025Jul 10, 2025 ↗View →
RPID
RAPID MICRO BIOSYSTEMS, INC.
SALE
PRESIDENT AND CEO
10,650$2.39$25.5K872,366Mar 9, 2025Mar 11, 2025 ↗View →
RPID
RAPID MICRO BIOSYSTEMS, INC.
PURCHASEGRANT
Stock grant
365,000——883,016Feb 18, 2025Feb 20, 2025 ↗View →
RPID
RAPID MICRO BIOSYSTEMS, INC.
PURCHASEGRANT
Stock grant
290,000——290,000Feb 18, 2025Feb 20, 2025 ↗View →
RPID
RAPID MICRO BIOSYSTEMS, INC.
SALE
PRESIDENT AND CEO
10,755$2.68$28.8K516,205Feb 11, 2025Feb 13, 2025 ↗View →
RPID
RAPID MICRO BIOSYSTEMS, INC.
SALE
PRESIDENT AND CEO
13,052$3.10$40.5K526,960Feb 6, 2025Feb 7, 2025 ↗View →
RPID
RAPID MICRO BIOSYSTEMS, INC.
PURCHASE
PRESIDENT AND CEO
50,000$0.77$38.4K540,012Aug 6, 2024Aug 7, 2024 ↗View →
RPID
RAPID MICRO BIOSYSTEMS, INC.
SALE
PRESIDENT AND CEO
10,323$0.98$10.1K468,824Mar 11, 2024Mar 12, 2024 ↗View →
RPID
RAPID MICRO BIOSYSTEMS, INC.
SALE
PRESIDENT AND CEO
9,365$0.96$9.0K479,147Feb 12, 2024Feb 14, 2024 ↗View →
RPID
RAPID MICRO BIOSYSTEMS, INC.
PURCHASEGRANT
Stock grant
113,000——488,512Feb 6, 2024Feb 8, 2024 ↗View →
RPID
RAPID MICRO BIOSYSTEMS, INC.
PURCHASEGRANT
Stock grant
225,000——225,000Feb 6, 2024Feb 8, 2024 ↗View →
RPID
RAPID MICRO BIOSYSTEMS, INC.
PURCHASE
PRESIDENT AND CEO
20,000$0.97$19.5K375,512Aug 15, 2023Aug 16, 2023 ↗View →
RPID
RAPID MICRO BIOSYSTEMS, INC.
PURCHASE
PRESIDENT AND CEO
34,000$0.92$31.4K355,512Aug 8, 2023Aug 10, 2023 ↗View →
RPID
RAPID MICRO BIOSYSTEMS, INC.
PURCHASE
PRESIDENT AND CEO
200$0.89$178294,973May 17, 2023May 18, 2023 ↗View →
RPID
RAPID MICRO BIOSYSTEMS, INC.
PURCHASE
PRESIDENT AND CEO
300$0.93$279321,512May 17, 2023May 18, 2023 ↗View →
RPID
RAPID MICRO BIOSYSTEMS, INC.
PURCHASE
PRESIDENT AND CEO
100$0.92$92314,273May 17, 2023May 18, 2023 ↗View →
RPID
RAPID MICRO BIOSYSTEMS, INC.
PURCHASE
PRESIDENT AND CEO
1,400$0.92$1.3K314,173May 17, 2023May 18, 2023 ↗View →
RPID
RAPID MICRO BIOSYSTEMS, INC.
PURCHASE
PRESIDENT AND CEO
14,700$0.91$13.4K312,773May 17, 2023May 18, 2023 ↗View →
RPID
RAPID MICRO BIOSYSTEMS, INC.
PURCHASE
PRESIDENT AND CEO
100$0.93$93314,473May 17, 2023May 18, 2023 ↗View →
RPID
RAPID MICRO BIOSYSTEMS, INC.
PURCHASE
PRESIDENT AND CEO
3,000$0.91$2.7K298,073May 17, 2023May 18, 2023 ↗View →
RPID
RAPID MICRO BIOSYSTEMS, INC.
PURCHASE
PRESIDENT AND CEO
100$0.92$92314,373May 17, 2023May 18, 2023 ↗View →
RPID
RAPID MICRO BIOSYSTEMS, INC.
PURCHASE
PRESIDENT AND CEO
100$0.90$90295,073May 17, 2023May 18, 2023 ↗View →
RPID
RAPID MICRO BIOSYSTEMS, INC.
PURCHASEGRANT
Stock grant
108,850——294,773Mar 9, 2023Mar 13, 2023 ↗View →
RPID
RAPID MICRO BIOSYSTEMS, INC.
PURCHASEGRANT
Stock grant
217,700——217,700Mar 9, 2023Mar 13, 2023 ↗View →
RPID
RAPID MICRO BIOSYSTEMS, INC.
SALE
President and CEO
11,406$1.30$14.8K185,923Feb 13, 2023Feb 15, 2023 ↗View →
RPID
RAPID MICRO BIOSYSTEMS, INC.
PURCHASE
President and CEO
10,000$3.80$38.0K194,027May 16, 2022May 18, 2022 ↗View →
RPID
RAPID MICRO BIOSYSTEMS, INC.
SALE
President and CEO
35,000——139,964Mar 14, 2022Mar 15, 2022 ↗View →
RPID
RAPID MICRO BIOSYSTEMS, INC.
PURCHASE
President and CEO
35,000$1.00$35.0K184,027Mar 14, 2022Mar 15, 2022 ↗View →
RPID
RAPID MICRO BIOSYSTEMS, INC.
PURCHASEGRANT
Stock grant
98,750——149,027Feb 11, 2022Feb 15, 2022 ↗View →
RPID
RAPID MICRO BIOSYSTEMS, INC.
PURCHASEGRANT
Stock grant
197,500——197,500Feb 11, 2022Feb 15, 2022 ↗View →
Other insiders · RPID
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About this filer
CIK 0001853904
ROLE
PRESIDENT AND CEO
PRIMARY
RPID
COMPANIES
1
ACTIVE SINCE
Feb 2022
MARKETPEEL · /INSIDER/0001853904DATA · SEC EDGAR · FORM 4 · CONSOLIDATED TAPE
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