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JF

John Gordon Freund

SIBN
DIRECTOR · SI-BONE, INC. · CIK 0001296771
FILING MIX · LIFETIME43%/57%
BUYS
24
SELLS
32
TOTAL VALUE
$80.51M
COMPANIES
3
ACTIVE SINCE
Jan 2020
HOLDINGS NOW
173,210
AVG SELL PX
$20.28
TRADE KIND
SHOWING 56 / 56
Trades · vs SPY
Loading price series…
Performance · forward returns vs SPY
26 backtested trades · 8 horizons · 5 pendingHow are these numbers computed? →
Forward-return performance of every backtestable P/S trade by John Gordon Freund, 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
7d26+50.00%+0.73%-0.16%+0.89%-1.81%—
14d26+53.85%+2.77%+0.75%+2.02%-0.62%—
30d26+26.92%+5.81%+2.67%+3.14%+2.21%—
60d26+65.38%+1.50%+4.08%-2.57%-7.29%—
90d26+53.85%+4.59%+6.20%-1.61%-9.26%—
180d26+61.54%+3.67%+13.16%-9.49%-39.17%—
1y26(2 pending)+79.17%-20.05%+11.16%-31.21%-47.48%—
2y26(3 pending)+100.00%-28.86%+10.61%-39.48%-36.89%—
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
SIBN · 54,258 shares · as of Jun 4, 2026
0704,9961,409,9932,114,9892,819,985202120222023202420252026SHARES 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 · 24 buys / 32 sellsCOVERAGE · 26 quarters
Form 4 filings · all activity
COMPANYTYPESHARESPRICEVALUEHELD AFTERTRADE DATEFILEDDETAILS
SIBN
SI-BONE, INC.
PURCHASEGRANT
Stock grant
10,957——54,258Jun 4, 2026Jun 8, 2026 ↗View →
COLL
COLLEGIUM PHARMACEUTICAL, INC
SALE
20$34.05$68183,952May 18, 2026May 20, 2026 ↗View →
COLL
COLLEGIUM PHARMACEUTICAL, INC
PURCHASE
8,700$16.49$143.5K88,099May 15, 2026May 18, 2026 ↗View →
COLL
COLLEGIUM PHARMACEUTICAL, INC
SALE
8,700——0May 15, 2026May 18, 2026 ↗View →
COLL
COLLEGIUM PHARMACEUTICAL, INC
SALE
4,127$34.54$142.5K83,972May 15, 2026May 18, 2026 ↗View →
COLL
COLLEGIUM PHARMACEUTICAL, INC
PURCHASEGRANT
Stock grant
8,741——79,399May 14, 2026May 18, 2026 ↗View →
SIBN
SI-BONE, INC.
SALE
12,132$15.99$194.0K91,767Aug 8, 2025Aug 11, 2025 ↗View →
COLL
COLLEGIUM PHARMACEUTICAL, INC
SALE
11,659$34.36$400.6K23,129Aug 8, 2025Aug 12, 2025 ↗View →
COLL
COLLEGIUM PHARMACEUTICAL, INC
SALE
15,000——0Jun 9, 2025Jun 11, 2025 ↗View →
COLL
COLLEGIUM PHARMACEUTICAL, INC
PURCHASE
15,000$13.45$201.8K77,259Jun 9, 2025Jun 11, 2025 ↗View →
COLL
COLLEGIUM PHARMACEUTICAL, INC
SALE
6,601$30.62$202.1K70,658Jun 9, 2025Jun 11, 2025 ↗View →
SIBN
SI-BONE, INC.
PURCHASEGRANT
Stock grant
8,675——43,301Jun 5, 2025Jun 6, 2025 ↗View →
COLL
COLLEGIUM PHARMACEUTICAL, INC
PURCHASEGRANT
Stock grant
9,791——62,259May 15, 2025May 19, 2025 ↗View →
SIBN
SI-BONE, INC.
PURCHASEGRANT
Stock grant
8,791——34,626Jun 26, 2024Jun 27, 2024 ↗View →
STRO
SUTRO BIOPHARMA, INC.
PURCHASEGRANT
Stock grant
35,000——35,000Jun 6, 2024Jun 10, 2024 ↗View →
COLL
COLLEGIUM PHARMACEUTICAL, INC
PURCHASEGRANT
Stock grant
7,693——52,468May 16, 2024May 16, 2024 ↗View →
SIBN
SI-BONE, INC.
SALE
30,000$20.54$616.2K103,899Aug 9, 2023Aug 11, 2023 ↗View →
SIBN
SI-BONE, INC.
PURCHASEGRANT
Stock grant
4,866——25,835Jun 9, 2023Jun 13, 2023 ↗View →
STRO
SUTRO BIOPHARMA, INC.
PURCHASEGRANT
Stock grant
25,000——25,000Jun 8, 2023Jun 12, 2023 ↗View →
COLL
COLLEGIUM PHARMACEUTICAL, INC
PURCHASEGRANT
Stock grant
9,792——44,775May 18, 2023May 19, 2023 ↗View →
SIBN
SI-BONE, INC.
PURCHASEGRANT
Stock grant
8,324——20,969Jun 16, 2022Jun 20, 2022 ↗View →
STRO
SUTRO BIOPHARMA, INC.
PURCHASEGRANT
Stock grant
18,500——18,500Jun 6, 2022Jun 8, 2022 ↗View →
COLL
COLLEGIUM PHARMACEUTICAL, INC
PURCHASEGRANT
Stock grant
14,035——34,983May 19, 2022May 23, 2022 ↗View →
SIBN
SI-BONE, INC.
SALE
12,591$31.41$395.4K331,366Jun 16, 2021Jun 16, 2021 ↗View →
SIBN
SI-BONE, INC.
SALE
21,511$31.11$669.1K343,957Jun 15, 2021Jun 16, 2021 ↗View →
SIBN
SI-BONE, INC.
SALE
17,990$31.28$562.7K365,468Jun 14, 2021Jun 16, 2021 ↗View →
SIBN
SI-BONE, INC.
PURCHASEGRANT
Stock grant
3,848——12,645Jun 10, 2021Jun 14, 2021 ↗View →
STRO
SUTRO BIOPHARMA, INC.
PURCHASEGRANT
Stock grant
18,500——18,500Jun 3, 2021Jun 7, 2021 ↗View →
SIBN
SI-BONE, INC.
SALE
45,220$30.06$1.36M383,458May 28, 2021Jun 1, 2021 ↗View →
SIBN
SI-BONE, INC.
SALE
26,367$30.93$815.5K428,678May 27, 2021Jun 1, 2021 ↗View →
SIBN
SI-BONE, INC.
SALE
17,138$31.85$545.8K455,045May 26, 2021May 26, 2021 ↗View →
SIBN
SI-BONE, INC.
SALE
1,696$32.55$55.2K472,183May 25, 2021May 26, 2021 ↗View →
SIBN
SI-BONE, INC.
SALE
50,827$32.54$1.65M474,079May 24, 2021May 26, 2021 ↗View →
SIBN
SI-BONE, INC.
SALE
200$32.76$6.6K473,879May 24, 2021May 26, 2021 ↗View →
COLL
COLLEGIUM PHARMACEUTICAL, INC
PURCHASEGRANT
Stock grant
9,941——20,948May 20, 2021May 24, 2021 ↗View →
SIBN
SI-BONE, INC.
SALE
600,000$30.25$18.15M524,906Mar 17, 2021Mar 18, 2021 ↗View →
SIBN
SI-BONE, INC.
SALE
66,200$31.63$2.09M1,124,906Mar 17, 2021Mar 18, 2021 ↗View →
SIBN
SI-BONE, INC.
SALE
55,053$30.33$1.67M1,191,106Mar 16, 2021Mar 18, 2021 ↗View →
SIBN
SI-BONE, INC.
SALE
80,887$30.90$2.50M1,246,159Mar 15, 2021Mar 15, 2021 ↗View →
SIBN
SI-BONE, INC.
SALE
91,072$31.39$2.86M1,327,046Mar 12, 2021Mar 15, 2021 ↗View →
SIBN
SI-BONE, INC.
SALE
63,928$31.05$1.98M1,418,118Mar 11, 2021Mar 15, 2021 ↗View →
STRO
SUTRO BIOPHARMA, INC.
SALE
118,735——0Dec 10, 2020Dec 14, 2020 ↗View →
STRO
SUTRO BIOPHARMA, INC.
PURCHASE
56,327——56,327Dec 10, 2020Dec 14, 2020 ↗View →
SIBN
SI-BONE, INC.
SALE
47,886$23.39$1.12M1,482,046Dec 3, 2020Dec 4, 2020 ↗View →
SIBN
SI-BONE, INC.
SALE
100,000$23.28$2.33M1,529,932Dec 2, 2020Dec 4, 2020 ↗View →
STRO
SUTRO BIOPHARMA, INC.
PURCHASE
118,735——118,735Nov 9, 2020Nov 12, 2020 ↗View →
STRO
SUTRO BIOPHARMA, INC.
SALE
560,053——0Nov 9, 2020Nov 12, 2020 ↗View →
SIBN
SI-BONE, INC.
SALE
190,053$22.00$4.18M2,129,932Oct 19, 2020Oct 20, 2020 ↗View →
STRO
SUTRO BIOPHARMA, INC.
SALE
400,000$12.00$4.80M560,053Sep 18, 2020Sep 22, 2020 ↗View →
STRO
SUTRO BIOPHARMA, INC.
SALE
500,000$10.00$5.00M960,053Sep 11, 2020Sep 15, 2020 ↗View →
STRO
SUTRO BIOPHARMA, INC.
SALE
500,000$8.72$4.36M1,460,053Aug 19, 2020Aug 21, 2020 ↗View →
SIBN
SI-BONE, INC.
PURCHASEGRANT
Stock grant
8,797——8,797Jun 16, 2020Jun 18, 2020 ↗View →
STRO
SUTRO BIOPHARMA, INC.
PURCHASEGRANT
Stock grant
12,000——12,000Jun 5, 2020Jun 8, 2020 ↗View →
COLL
COLLEGIUM PHARMACEUTICAL, INC
PURCHASEGRANT
Stock grant
8,095——8,095May 20, 2020May 22, 2020 ↗View →
COLL
COLLEGIUM PHARMACEUTICAL, INC
PURCHASEGRANT
Stock grant
4,047——11,007May 20, 2020May 22, 2020 ↗View →
SIBN
SI-BONE, INC.
SALE
1,000,000$21.50$21.50M2,819,985Jan 27, 2020Aug 14, 2020 ↗View →
Other insiders · SIBN
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About this filer
CIK 0001296771
ROLE
Director
PRIMARY
SIBN
COMPANIES
3
ACTIVE SINCE
Jan 2020
MARKETPEEL · /INSIDER/0001296771DATA · SEC EDGAR · FORM 4 · CONSOLIDATED TAPE
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