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Chirfi Guindo

BIIB
EVP GLOB. PROD STRAT AND COMM · BIOGEN INC. · CIK 0001722753
FILING MIX · LIFETIME44%/56%
BUYS
27
SELLS
35
TOTAL VALUE
$28.01M
COMPANIES
3
ACTIVE SINCE
Feb 2020
HOLDINGS NOW
46,442
AVG SELL PX
$125.43
TRADE KIND
SHOWING 62 / 62
Trades · vs SPY
Loading price series…
Performance · forward returns vs SPY
4 backtested trades · 8 horizons · 9 pending
Forward-return performance of every backtestable P/S trade by Chirfi Guindo, 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
7d4+25.00%+1.93%+0.03%+1.89%+1.80%—
14d4+25.00%+0.82%+0.13%+0.69%-0.19%—
30d4+100.00%-4.45%-0.71%-3.74%-1.40%—
60d4+25.00%-2.31%+0.25%-2.56%+1.86%—
90d4+100.00%-7.79%+7.87%-15.66%-13.64%—
180d4(3 pending)+100.00%-43.43%+8.10%-51.53%-51.53%—
1y4(3 pending)+100.00%-49.20%-0.23%-48.98%-48.98%—
2y4(3 pending)+100.00%-22.98%+4.10%-27.08%-27.08%—
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
BIIB · 7,364 shares · as of Feb 18, 2022
03,6257,25010,87514,50020212022SHARES HELD
Trading cadence · quarterly flow
BUY ● SELL ●
2020
2020
2020
2020
2021
2021
2021
2021
2022
2022
2022
2022
2023
2023
2023
2023
2024
2024
2024
2024
2025
2025
2025
2025
2026
2026
FLOW · 27 buys / 35 sellsCOVERAGE · 26 quarters
Form 4 filings · all activity
COMPANYTYPESHARESPRICEVALUEHELD AFTERTRADE DATEFILEDDETAILS
BEAM
BEAM THERAPEUTICS INC.
PURCHASEGRANT
Stock grant
19,676——19,676Jun 3, 2026Jun 5, 2026 ↗View →
MRK
MERCK & CO., INC.
PURCHASEGRANT
Stock grant
6,628——6,628May 5, 2026May 7, 2026 ↗View →
MRK
MERCK & CO., INC.
PURCHASEGRANT
Stock grant
19,402——19,402May 5, 2026May 7, 2026 ↗View →
MRK
MERCK & CO., INC.
SALE
EVP, Access, Policy & Comms
1,967——3,935Apr 29, 2026May 1, 2026 ↗View →
MRK
MERCK & CO., INC.
PURCHASE
EVP, Access, Policy & Comms
1,967$110.03$216.4K62,582.127Apr 29, 2026May 1, 2026 ↗View →
MRK
MERCK & CO., INC.
SALE
EVP, Access, Policy & Comms
969$110.03$106.6K61,613.127Apr 29, 2026May 1, 2026 ↗View →
MRK
MERCK & CO., INC.
SALE
Chief Marketing Officer
10,000$121.46$1.21M60,615.127Feb 12, 2026Feb 12, 2026 ↗View →
MRK
MERCK & CO., INC.
SALE
Chief Marketing Officer
10,000$118.41$1.18M70,615.127Feb 9, 2026Feb 9, 2026 ↗View →
MRK
MERCK & CO., INC.
SALE
Chief Marketing Officer
20,000$121.88$2.44M80,615.127Feb 5, 2026Feb 6, 2026 ↗View →
MRK
MERCK & CO., INC.
PURCHASEGRANT
Stock grant
9,865$107.40$1.06M100,615.127Jan 26, 2026Jan 28, 2026 ↗View →
MRK
MERCK & CO., INC.
SALE
Chief Marketing Officer
18,175$79.29$1.44M89,233.973Aug 4, 2025Aug 5, 2025 ↗View →
MRK
MERCK & CO., INC.
SALE
Chief Marketing Officer
36,903——0Aug 4, 2025Aug 5, 2025 ↗View →
MRK
MERCK & CO., INC.
PURCHASE
Chief Marketing Officer
36,903$79.29$2.93M107,408.973Aug 4, 2025Aug 5, 2025 ↗View →
BEAM
BEAM THERAPEUTICS INC.
PURCHASEGRANT
Stock grant
33,662——33,662Jun 4, 2025Jun 6, 2025 ↗View →
MRK
MERCK & CO., INC.
PURCHASEGRANT
Stock grant
5,902——5,902Apr 29, 2025May 1, 2025 ↗View →
MRK
MERCK & CO., INC.
PURCHASEGRANT
Stock grant
26,867——26,867Apr 29, 2025May 1, 2025 ↗View →
MRK
MERCK & CO., INC.
PURCHASEGRANT
Stock grant
28,158$97.94$2.76M69,143.918Jan 27, 2025Jan 29, 2025 ↗View →
BEAM
BEAM THERAPEUTICS INC.
PURCHASEGRANT
Stock grant
39,086——39,086Dec 2, 2024Dec 4, 2024 ↗View →
MRK
MERCK & CO., INC.
SALE
Chief Marketing Officer
17,412$115.20$2.01M40,369.593Aug 5, 2024Aug 6, 2024 ↗View →
MRK
MERCK & CO., INC.
SALE
Chief Marketing Officer
36,901——36,903Aug 5, 2024Aug 6, 2024 ↗View →
MRK
MERCK & CO., INC.
PURCHASE
Chief Marketing Officer
36,901$115.20$4.25M57,781.593Aug 5, 2024Aug 6, 2024 ↗View →
MRK
MERCK & CO., INC.
PURCHASEGRANT
Stock grant
29,297——29,297Apr 30, 2024May 2, 2024 ↗View →
MRK
MERCK & CO., INC.
SALE
Chief Marketing Officer
36,901——73,804Aug 3, 2023Aug 4, 2023 ↗View →
MRK
MERCK & CO., INC.
PURCHASE
Chief Marketing Officer
36,901$105.70$3.90M38,341.684Aug 3, 2023Aug 4, 2023 ↗View →
MRK
MERCK & CO., INC.
SALE
Chief Marketing Officer
17,989$105.70$1.90M20,352.684Aug 3, 2023Aug 4, 2023 ↗View →
MRK
MERCK & CO., INC.
PURCHASEGRANT
Stock grant
34,578——34,578May 2, 2023May 4, 2023 ↗View →
MRK
MERCK & CO., INC.
PURCHASEGRANT
Stock grant
110,705——110,705Aug 3, 2022Aug 4, 2022 ↗View →
BIIB
BIOGEN INC.
SALE
Head of Glob Prod Strat & Com
2,851——9,668Feb 18, 2022Feb 23, 2022 ↗View →
BIIB
BIOGEN INC.
SALE
Head of Glob Prod Strat & Com
1,981——12,519Feb 18, 2022Feb 23, 2022 ↗View →
BIIB
BIOGEN INC.
PURCHASE
Head of Glob Prod Strat & Com
1,981——8,243Feb 18, 2022Feb 23, 2022 ↗View →
BIIB
BIOGEN INC.
SALE
Head of Glob Prod Strat & Com
879$209.79$184.4K7,364Feb 18, 2022Feb 23, 2022 ↗View →
BIIB
BIOGEN INC.
SALE
Head of Glob Prod Strat & Com
560$214.59$120.2K6,708Feb 12, 2022Feb 15, 2022 ↗View →
BIIB
BIOGEN INC.
PURCHASE
Head of Glob Prod Strat & Com
1,261——7,268Feb 12, 2022Feb 15, 2022 ↗View →
BIIB
BIOGEN INC.
SALE
Head of Glob Prod Strat & Com
2,480——3,818Feb 12, 2022Feb 15, 2022 ↗View →
BIIB
BIOGEN INC.
SALE
Head of Glob Prod Strat & Com
1,336——6,298Feb 12, 2022Feb 15, 2022 ↗View →
BIIB
BIOGEN INC.
PURCHASE
Head of Glob Prod Strat & Com
1,336——8,044Feb 12, 2022Feb 15, 2022 ↗View →
BIIB
BIOGEN INC.
SALE
Head of Glob Prod Strat & Com
1,261——2,395Feb 12, 2022Feb 15, 2022 ↗View →
BIIB
BIOGEN INC.
SALE
Head of Glob Prod Strat & Com
2,395——0Feb 12, 2022Feb 15, 2022 ↗View →
BIIB
BIOGEN INC.
SALE
Head of Glob Prod Strat & Com
593$214.59$127.3K7,451Feb 12, 2022Feb 15, 2022 ↗View →
BIIB
BIOGEN INC.
SALE
Head of Glob Prod Strat & Com
1,189$214.59$255.1K6,262Feb 12, 2022Feb 15, 2022 ↗View →
BIIB
BIOGEN INC.
PURCHASEGRANT
Stock grant
9,090——9,090Feb 10, 2022Feb 14, 2022 ↗View →
BIIB
BIOGEN INC.
PURCHASEGRANT
Stock grant
3,088——6,007Jan 19, 2022Jan 21, 2022 ↗View →
BIIB
BIOGEN INC.
SALE
Head of Glob Prod Strat & Com
3,087$440.00$1.36M2,919Jun 7, 2021Jun 9, 2021 ↗View →
BIIB
BIOGEN INC.
PURCHASEGRANT
Stock grant
14,500——14,500Feb 18, 2021Feb 22, 2021 ↗View →
BIIB
BIOGEN INC.
PURCHASE
EVP Glob. Prod Strat and Comm
1,534——5,324Feb 12, 2021Feb 17, 2021 ↗View →
BIIB
BIOGEN INC.
PURCHASE
EVP Glob. Prod Strat and Comm
1,622——6,946Feb 12, 2021Feb 17, 2021 ↗View →
BIIB
BIOGEN INC.
SALE
EVP Glob. Prod Strat and Comm
463$278.03$128.7K6,483Feb 12, 2021Feb 17, 2021 ↗View →
BIIB
BIOGEN INC.
SALE
EVP Glob. Prod Strat and Comm
2,194——7,634Feb 12, 2021Feb 17, 2021 ↗View →
BIIB
BIOGEN INC.
SALE
EVP Glob. Prod Strat and Comm
1,534——5,774Feb 12, 2021Feb 17, 2021 ↗View →
BIIB
BIOGEN INC.
SALE
EVP Glob. Prod Strat and Comm
477$278.03$132.6K6,006Feb 12, 2021Feb 17, 2021 ↗View →
BIIB
BIOGEN INC.
SALE
EVP Glob. Prod Strat and Comm
1,622——9,828Feb 12, 2021Feb 17, 2021 ↗View →
BIIB
BIOGEN INC.
SALE
EVP Glob. Prod Strat and Comm
2,118——3,656Feb 12, 2021Feb 17, 2021 ↗View →
BIIB
BIOGEN INC.
SALE
EVP Glob. Prod Strat and Comm
481——693Dec 1, 2020Dec 3, 2020 ↗View →
BIIB
BIOGEN INC.
SALE
EVP Glob. Prod Strat and Comm
693——0Dec 1, 2020Dec 3, 2020 ↗View →
BIIB
BIOGEN INC.
SALE
EVP Glob. Prod Strat and Comm
348$243.16$84.6K3,523Dec 1, 2020Dec 3, 2020 ↗View →
BIIB
BIOGEN INC.
SALE
EVP Glob. Prod Strat and Comm
214$243.16$52.0K3,790Dec 1, 2020Dec 3, 2020 ↗View →
BIIB
BIOGEN INC.
PURCHASE
EVP Glob. Prod Strat and Comm
481——4,004Dec 1, 2020Dec 3, 2020 ↗View →
BIIB
BIOGEN INC.
SALE
EVP Glob. Prod Strat and Comm
504$331.76$167.2K3,871Feb 12, 2020Feb 14, 2020 ↗View →
BIIB
BIOGEN INC.
PURCHASEGRANT
Stock grant
11,450——11,450Feb 12, 2020Feb 14, 2020 ↗View →
BIIB
BIOGEN INC.
SALE
EVP Glob. Prod Strat and Comm
1,680——9,280Feb 12, 2020Feb 14, 2020 ↗View →
BIIB
BIOGEN INC.
SALE
EVP Glob. Prod Strat and Comm
1,972——7,308Feb 12, 2020Feb 14, 2020 ↗View →
BIIB
BIOGEN INC.
PURCHASE
EVP Glob. Prod Strat and Comm
1,680——4,375Feb 12, 2020Feb 14, 2020 ↗View →
Other insiders · BIIB
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About this filer
CIK 0001722753
ROLE
EVP Glob. Prod Strat and Comm
PRIMARY
BIIB
COMPANIES
3
ACTIVE SINCE
Feb 2020
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