Gaffin David Joseph

EVP, CLO, Alkermes, Inc., SVP, CLO, Alkermes, Inc. · SEC CIK 1675905
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Buy track record

How this insider's open-market purchases have performed
This insider has no open-market purchases in the records we parsed, so there's no buy track record to score. Their full filing history is below.
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Open-market buys
$0
0 trades
Open-market sells
$1.57M
11 trades
Net flow
−$1.57M
Net selling
Total filings
93
transactions shown

Full transaction history

All Form 4 activity across every company, newest first
View on SEC EDGAR ↗
ALKS
Sell Gaffin David Joseph · EVP, CLO, Alkermes, Inc. · Open-market sale · filed 1w ago ΔOwn −0.9%

Gaffin David Joseph sold $87.6K of ALKS, trimming their stake 1%.

−$87.6K
2,034 sh @ $43
ALKS
Sell Gaffin David Joseph · EVP, CLO, Alkermes, Inc. · Open-market sale · filed May 4, 2026 ΔOwn −0.9%

Gaffin David Joseph sold $67.5K of ALKS, trimming their stake 1%.

−$67.5K
2,034 sh @ $33
ALKS
Sell Gaffin David Joseph · EVP, CLO, Alkermes, Inc. · Open-market sale · filed Apr 6, 2026 ΔOwn −0.9%

Gaffin David Joseph sold $70.3K of ALKS, trimming their stake 1%.

−$70.3K
2,034 sh @ $35
ALKS
Sell Gaffin David Joseph · EVP, CLO, Alkermes, Inc. · Open-market sale · filed Mar 4, 2026 ΔOwn −0.9%

Gaffin David Joseph sold $60.5K of ALKS, trimming their stake 1%.

−$60.5K
2,034 sh @ $30
ALKS
Sell Gaffin David Joseph · EVP, CLO, Alkermes, Inc. · Open-market sale · filed Mar 4, 2026 ΔOwn −0.8%

Gaffin David Joseph sold $59.6K of ALKS, trimming their stake 1%.

−$59.6K
2,034 sh @ $29
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ALKS
Tax withholding Gaffin David Joseph · EVP, CLO, Alkermes, Inc. · Tax withholding · filed Feb 27, 2026 ΔOwn −1.3%
−$93.7K
3,049 sh @ $31
ALKS
Tax withholding Gaffin David Joseph · EVP, CLO, Alkermes, Inc. · Tax withholding · filed Feb 25, 2026 ΔOwn −1.4%
−$109.9K
3,414 sh @ $32
ALKS
Tax withholding Gaffin David Joseph · EVP, CLO, Alkermes, Inc. · Tax withholding · filed Feb 20, 2026 ΔOwn −1.4%
−$109K
3,407 sh @ $32
ALKS
Tax withholding Gaffin David Joseph · EVP, CLO, Alkermes, Inc. · Tax withholding · filed Feb 20, 2026 ΔOwn −0.9%
−$68.1K
2,126 sh @ $32
ALKS
Tax withholding Gaffin David Joseph · EVP, CLO, Alkermes, Inc. · Tax withholding · filed Feb 6, 2026 ΔOwn −3.3%
−$255.6K
7,619 sh @ $34
ALKS
Tax withholding Gaffin David Joseph · EVP, CLO, Alkermes, Inc. · Tax withholding · filed Aug 4, 2025 ΔOwn −0.4%
−$23.8K
895 sh @ $27
ALKS
Tax withholding Gaffin David Joseph · EVP, CLO, Alkermes, Inc. · Tax withholding · filed Feb 28, 2025 ΔOwn −1.5%
−$106.1K
3,049 sh @ $35
ALKS
Tax withholding Gaffin David Joseph · EVP, CLO, Alkermes, Inc. · Tax withholding · filed Feb 25, 2025 ΔOwn −1.7%
−$120.6K
3,414 sh @ $35
ALKS
Tax withholding Gaffin David Joseph · EVP, CLO, Alkermes, Inc. · Tax withholding · filed Feb 25, 2025 ΔOwn −1.7%
−$116.6K
3,300 sh @ $35
ALKS
Tax withholding Gaffin David Joseph · EVP, CLO, Alkermes, Inc. · Tax withholding · filed Feb 20, 2025 ΔOwn −1.4%
−$101.3K
2,822 sh @ $36
ALKS
Tax withholding Gaffin David Joseph · EVP, CLO, Alkermes, Inc. · Tax withholding · filed Feb 7, 2025 ΔOwn −4.9%
−$306.1K
9,752 sh @ $31
ALKS
Tax withholding Gaffin David Joseph · EVP, CLO, Alkermes, Inc. · Tax withholding · filed Aug 5, 2024 ΔOwn −0.5%
−$24.8K
895 sh @ $28

Frequently asked questions

How is Gaffin David Joseph'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 Gaffin David Joseph'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.