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ZK

Zachary Katz

GRND
CLO AND HEAD OF GLOBAL AFFAIRS · GRINDR INC. · CIK 0002034458
FILING MIX · LIFETIME26%/74%
BUYS
9
SELLS
26
TOTAL VALUE
$5.48M
COMPANIES
1
ACTIVE SINCE
Sep 2024
HOLDINGS NOW
713,323
AVG SELL PX
$15.86
TRADE KIND
SHOWING 35 / 35
Trades · vs SPY
Loading price series…
Performance · forward returns vs SPY
15 backtested trades · 8 horizons · 22 pendingHow are these numbers computed? →
Forward-return performance of every backtestable P/S trade by Zachary Katz, 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
7d15+40.00%+0.54%+0.16%+0.38%+1.47%—
14d15+33.33%+2.86%+1.20%+1.66%+4.81%—
30d15+46.67%-0.66%-0.23%-0.43%+5.89%—
60d15+46.67%+1.60%+0.91%+0.70%-2.52%—
90d15+60.00%-1.22%+2.66%-3.88%-5.75%—
180d15+66.67%-1.93%+6.78%-9.04%-11.56%—
1y15(7 pending)+87.50%-26.19%+18.77%-44.96%-47.16%—
2y15(15 pending)——————
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
GRND · 713,323 shares · as of Jul 1, 2026
0190,130380,260570,390760,52020252026SHARES HELD
Trading cadence · quarterly flow
BUY ● SELL ●
2024
2024
2025
2025
2025
2025
2026
2026
2026
FLOW · 9 buys / 26 sellsCOVERAGE · 9 quarters
Form 4 filings · all activity
COMPANYTYPESHARESPRICEVALUEHELD AFTERTRADE DATEFILEDDETAILS
GRND
GRINDR INC.
SALE10b5-1
10b5-1 plan
12,800$16.28$208.4K713,323Jul 1, 2026Jul 2, 2026 ↗View →
GRND
GRINDR INC.
SALE10b5-1
10b5-1 plan
12,799$14.65$187.5K726,123Jun 29, 2026Jun 30, 2026 ↗View →
GRND
GRINDR INC.
SALE10b5-1
10b5-1 plan
10,172$13.29$135.2K738,922Jun 17, 2026Jun 22, 2026 ↗View →
GRND
GRINDR INC.
SALE
CLO and Head of Global Affairs
10,050$12.17$122.3K749,094Apr 6, 2026Apr 8, 2026 ↗View →
GRND
GRINDR INC.
PURCHASEGRANT
Stock grant
28,007——759,144Mar 12, 2026Mar 23, 2026 ↗View →
GRND
GRINDR INC.
PURCHASEGRANT
Stock grant
15,000——15,000Nov 30, 2025Dec 2, 2025 ↗View →
GRND
GRINDR INC.
PURCHASEGRANT
Stock grant
270,000——760,520Nov 30, 2025Dec 2, 2025 ↗View →
GRND
GRINDR INC.
PURCHASEGRANT
Stock grant
60,000——60,000Nov 30, 2025Dec 2, 2025 ↗View →
GRND
GRINDR INC.
SALE10b5-1
10b5-1 plan
29,383$12.52$367.9K461,137Nov 25, 2025Nov 28, 2025 ↗View →
GRND
GRINDR INC.
SALE
GC and Head of Global Affairs
28,437$15.10$429.4K504,301Nov 13, 2025Nov 14, 2025 ↗View →
GRND
GRINDR INC.
SALE10b5-1
10b5-1 plan
13,781$14.39$198.3K490,520Nov 13, 2025Nov 14, 2025 ↗View →
GRND
GRINDR INC.
SALE10b5-1
10b5-1 plan
15,601$13.73$214.2K532,738Nov 3, 2025Nov 5, 2025 ↗View →
GRND
GRINDR INC.
SALE10b5-1
10b5-1 plan
4,622$13.22$61.1K548,339Oct 13, 2025Oct 15, 2025 ↗View →
GRND
GRINDR INC.
SALE10b5-1
10b5-1 plan
3,023$12.23$37.0K552,961Oct 13, 2025Oct 15, 2025 ↗View →
GRND
GRINDR INC.
SALE10b5-1
10b5-1 plan
7,644$15.64$119.6K555,984Sep 15, 2025Sep 17, 2025 ↗View →
GRND
GRINDR INC.
SALE
GC and Head of Global Affairs
31,484$16.07$505.9K563,628Sep 15, 2025Sep 17, 2025 ↗View →
GRND
GRINDR INC.
SALE10b5-1
10b5-1 plan
14,693$19.25$282.8K595,112Jul 24, 2025Jul 28, 2025 ↗View →
GRND
GRINDR INC.
SALE10b5-1
10b5-1 plan
14,692$22.48$330.3K609,805Jul 3, 2025Jul 8, 2025 ↗View →
GRND
GRINDR INC.
SALE10b5-1
10b5-1 plan
14,692$23.47$344.8K624,497Jun 16, 2025Jun 18, 2025 ↗View →
GRND
GRINDR INC.
SALE
GC and Head of Global Affairs
21,276$23.99$510.4K639,189May 14, 2025May 16, 2025 ↗View →
GRND
GRINDR INC.
PURCHASEGRANT
Stock grant
41,897——660,465May 12, 2025May 14, 2025 ↗View →
GRND
GRINDR INC.
SALE
GC and Head of Global Affairs
4,920$15.14$74.5K618,568Mar 17, 2025Mar 19, 2025 ↗View →
GRND
GRINDR INC.
SALE10b5-1
10b5-1 plan
1,700$16.07$27.3K615,158Mar 11, 2025Mar 13, 2025 ↗View →
GRND
GRINDR INC.
SALE10b5-1
10b5-1 plan
1,358$16.42$22.3K613,800Mar 11, 2025Mar 13, 2025 ↗View →
GRND
GRINDR INC.
PURCHASEGRANT
Stock grant
9,688——623,488Mar 7, 2025Mar 14, 2025 ↗View →
GRND
GRINDR INC.
SALE
GC and Head of Global Affairs
16,773$18.24$305.9K616,858Mar 4, 2025Mar 6, 2025 ↗View →
GRND
GRINDR INC.
PURCHASEGRANT
Stock grant
46,082——623,631Feb 26, 2025Feb 28, 2025 ↗View →
GRND
GRINDR INC.
SALE10b5-1
10b5-1 plan
3,057$18.00$55.0K577,549Feb 11, 2025Feb 13, 2025 ↗View →
GRND
GRINDR INC.
SALE10b5-1
10b5-1 plan
3,058$16.40$50.2K580,606Jan 13, 2025Jan 15, 2025 ↗View →
GRND
GRINDR INC.
SALE10b5-1
10b5-1 plan
3,058$15.83$48.4K583,664Dec 11, 2024Dec 12, 2024 ↗View →
GRND
GRINDR INC.
SALE10b5-1
10b5-1 plan
3,058$14.30$43.7K586,722Nov 13, 2024Nov 15, 2024 ↗View →
GRND
GRINDR INC.
SALE
GC and Head of Global Affairs
32,064$13.36$428.4K589,780Nov 1, 2024Nov 5, 2024 ↗View →
GRND
GRINDR INC.
PURCHASEGRANT
Stock grant
63,266——621,844Nov 1, 2024Nov 5, 2024 ↗View →
GRND
GRINDR INC.
PURCHASEGRANT
Stock grant
280,000——558,578Oct 9, 2024Oct 15, 2024 ↗View →
GRND
GRINDR INC.
SALE
GC and Head of Global Affairs
31,422$11.78$370.2K278,578Sep 12, 2024Sep 13, 2024 ↗View →
Other insiders · GRND
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About this filer
CIK 0002034458
ROLE
CLO and Head of Global Affairs
PRIMARY
GRND
COMPANIES
1
ACTIVE SINCE
Sep 2024
MARKETPEEL · /INSIDER/0002034458DATA · SEC EDGAR · FORM 4 · CONSOLIDATED TAPE
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