GENB
+$0
2.78M sh
AFEYAN NOUBAR
Director, 10% Owner · SEC CIK 1780951Advertisement
Buy track record
How this insider's open-market purchases have performed7%
of buys now in profit
1 up · 14 down
Avg return since buy−92.2%
Median return−100.0%
Best trade+1.7%
Worst trade−100.0%
Buys scored15 (+3 n/a)
Average return by holding period — separates good entry timing from riding one long winner
After 1 month
+23.6%
67% won · 15 trades
After 3 months
−4.8%
13% won · 15 trades
After 6 months
−26.4%
14% won · 14 trades
After 12 months
−71.8%
14% won · 14 trades
| Date | Company | 90d trend | Buy price | Value | ΔOwn | 1M | 3M | 6M | 12M | To date |
|---|---|---|---|---|---|---|---|---|---|---|
| Mar 2, 2026 | GENB | $16 | $25M | NEW | +13.0% | −1.6% | — | — | +1.7% | |
| Jul 11, 2023 | EVLO | $2 | $2.5M | +263% | +197.6% | −6.2% | −98.4% | −100.0% | −100.0% | |
| Jul 11, 2023 | EVLO | $2 | $7.5M | +474% | +197.6% | −6.2% | −98.4% | −100.0% | −100.0% | |
| Jul 5, 2022 | MCRB | $3 | $9.18M | +98% | +30.0% | +70.5% | +39.7% | +24.3% | −92.6% | |
| Jul 5, 2022 | MCRB | $3 | $18.35M | NEW | +30.0% | +70.5% | +39.7% | +24.3% | −92.6% | |
| May 27, 2022 | EVLO | $1 | $6.4M | +137% | +4.7% | −1.4% | −6.1% | −93.0% | −100.0% | |
| May 27, 2022 | EVLO | $1 | $1.6M | +138% | +4.7% | −1.4% | −6.1% | −93.0% | −100.0% | |
| May 27, 2022 | EVLO | $1 | $2M | +33% | +4.7% | −1.4% | −6.1% | −93.0% | −100.0% | |
| May 27, 2022 | EVLO | $1 | $10M | +500% | +4.7% | −1.4% | −6.1% | −93.0% | −100.0% | |
| May 27, 2022 | EVLO | $1 | $20M | NEW | +4.7% | −1.4% | −6.1% | −93.0% | −100.0% | |
| Feb 8, 2021 | KLDO | $12 | $824.2K | +4.4% | −23.6% | −41.2% | −46.2% | −85.3% | −100.0% | |
| Feb 8, 2021 | KLDO | $12 | $824.2K | +11% | −23.6% | −41.2% | −46.2% | −85.3% | −100.0% | |
| Feb 2, 2021 | EVLO | $15 | $557.1K | +2.8% | −30.0% | −36.4% | −42.8% | −72.7% | −100.0% | |
| Feb 2, 2021 | EVLO | $15 | $139.3K | +1.2% | −30.0% | −36.4% | −42.8% | −72.7% | −100.0% | |
| Feb 2, 2021 | EVLO | $15 | $696.4K | +1.1% | −30.0% | −36.4% | −42.8% | −72.7% | −100.0% |
How this is calculated. We score only open-market purchases (SEC code
P) — the buys that carry real signal. Each trade's return is measured from the adjusted closing price on the purchase date to the latest close, accounting for stock splits and dividends. The 1M/3M/6M/12M columns show the same trade's return after each fixed holding period; a dash means that horizon hasn't elapsed yet or isn't priceable. Sales are excluded because insiders sell for many routine reasons. With only 15 scored trades, treat this as a small sample, not a verdict.
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Open-market buys
$125.57M
18 trades
Open-market sells
$0
0 trades
Net flow
+$125.57M
Net buying
Total filings
22
transactions shown
Full transaction history
All Form 4 activity across every company, newest firstGENB
Afeyan Noubar, GENB's 10% owner, spent $25M of their own money on 1.56M shares at $16, opening a brand-new position.
+$25M
1.56M sh @ $16
EVLO
Flagship Ventures Fund Iv General Partner Llc, EVLO's 10% owner, spent $2.5M of their own money on 1.08M shares at $2, growing their stake 263%.
+$2.5M
1.08M sh @ $2
EVLO
Flagship Ventures Fund Iv General Partner Llc, EVLO's 10% owner, spent $7.5M of their own money on 3.25M shares at $2, growing their stake 474%.
+$7.5M
3.25M sh @ $2
MCRB
Nutritional Health Ltp Fund General Partner Llc, MCRB's 10% owner, spent $9.18M of their own money on 2.91M shares at $3, growing their stake 98%.
+$9.18M
2.91M sh @ $3
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MCRB
Nutritional Health Ltp Fund General Partner Llc, MCRB's 10% owner, spent $18.35M of their own money on 5.83M shares at $3, opening a brand-new position.
+$18.35M
5.83M sh @ $3
EVLO
Flagship Ventures Fund Iv General Partner Llc, EVLO's 10% owner, spent $6.4M of their own money on 4.38M shares at $1, growing their stake 137%.
+$6.4M
4.38M sh @ $1
EVLO
Flagship Ventures Fund Iv General Partner Llc, EVLO's 10% owner, spent $1.6M of their own money on 1.1M shares at $1, growing their stake 138%.
+$1.6M
1.1M sh @ $1
EVLO
Flagship Ventures Fund Iv General Partner Llc, EVLO's 10% owner, spent $2M of their own money on 1.37M shares at $1, growing their stake 33%.
+$2M
1.37M sh @ $1
EVLO
Flagship Ventures Fund Iv General Partner Llc, EVLO's 10% owner, spent $10M of their own money on 6.85M shares at $1, growing their stake 500%.
+$10M
6.85M sh @ $1
EVLO
Flagship Ventures Fund Iv General Partner Llc, EVLO's 10% owner, spent $20M of their own money on 13.7M shares at $1, opening a brand-new position.
+$20M
13.7M sh @ $1
OMGA
+$0
1.32M sh
OMGA
Flagship Pioneering Inc., OMGA's 10% owner, spent $3.75M of their own money on 220,588 shares at $17, growing their stake 3%.
+$3.75M
220,588 sh @ $17
OMGA
Flagship Pioneering Inc., OMGA's 10% owner, spent $11.25M of their own money on 661,764 shares at $17, growing their stake 14%.
+$11.25M
661,764 sh @ $17
OMGA
Flagship Pioneering Inc., OMGA's 10% owner, spent $5M of their own money on 294,117 shares at $17, growing their stake 22%.
+$5M
294,117 sh @ $17
MCRB
−$0
295,171 sh
KLDO
Flagship Ventures Fund Iv General Partner Llc, KLDO's 10% owner, spent $824.2K of their own money on 71,666 shares at $12, growing their stake 4%.
+$824.2K
71,666 sh @ $12
KLDO
Flagship Ventures Fund Iv General Partner Llc, KLDO's 10% owner, spent $824.2K of their own money on 71,667 shares at $12, growing their stake 11%.
+$824.2K
71,667 sh @ $12
EVLO
Flagship Ventures Fund Iv General Partner Llc, EVLO's 10% owner, spent $557.1K of their own money on 37,143 shares at $15, growing their stake 3%.
+$557.1K
37,143 sh @ $15
EVLO
Flagship Ventures Fund Iv General Partner Llc, EVLO's 10% owner, spent $139.3K of their own money on 9,285 shares at $15, growing their stake 1%.
+$139.3K
9,285 sh @ $15
EVLO
Flagship Ventures Fund Iv General Partner Llc, EVLO's 10% owner, spent $696.4K of their own money on 46,429 shares at $15, growing their stake 1%.
+$696.4K
46,429 sh @ $15
MCRB
−$0
43,154 sh
Frequently asked questions
How is AFEYAN NOUBAR's win rate calculated?
We take every open-market purchase (SEC code P) we can match to a stock price, then compare the split- and dividend-adjusted price on the purchase date to the most recent close. The win rate is the share of those buys currently trading above the purchase price. Sales and share grants are not scored.
Why are some buys not included in the score?
A purchase is excluded if we can't price it — for example if the ticker is missing from the filing, the company has been delisted, or the security isn't a common stock we can match to market data. Excluded counts are shown next to the scored total.
What do the 1M / 3M / 6M / 12M columns mean?
They show each purchase's return after a fixed holding period — one, three, six, and twelve months from the buy date — using split- and dividend-adjusted prices. This separates good entry timing from simply holding a long-running winner. A dash means that horizon hasn't elapsed yet for that trade, or the stock couldn't be priced at that date.
Does a high win rate mean I should copy this insider?
No. Past performance does not predict future results, sample sizes are often small, and an insider's edge in their own company doesn't transfer to yours. This is context, not a recommendation. InsiderSource is not investment advice.
Where does this data come from?
Trades come from AFEYAN NOUBAR's SEC Form 4 filings on EDGAR. Prices come from public market data and are split/dividend-adjusted. Always verify against the original filings before acting.