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HB

Harold Bernstein

MAZE
PRESIDENT, R&D & CMO · MAZE THERAPEUTICS, INC. · CIK 0002050172
FILING MIX · LIFETIME30%/70%
BUYS
15
SELLS
35
TOTAL VALUE
$10.27M
COMPANIES
1
ACTIVE SINCE
Sep 2025
HOLDINGS NOW
16,142
AVG SELL PX
$38.33
TRADE KIND
SHOWING 50 / 50
Trades · vs SPY
Loading price series…
Performance · forward returns vs SPY
17 backtested trades · 8 horizons · 42 pendingHow are these numbers computed? →
Forward-return performance of every backtestable P/S trade by Harold Bernstein, 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
7d17+58.82%-6.75%+0.17%-6.92%-0.36%—
14d17+58.82%-7.29%+0.64%-7.92%-0.48%—
30d17+70.59%-10.35%+3.33%-13.68%+1.37%—
60d17+70.59%-21.25%-0.89%-16.17%-32.61%—
90d17+100.00%-33.55%+4.94%-38.48%-45.37%—
180d17(8 pending)+100.00%-32.77%+7.47%-40.25%-35.87%—
1y17(17 pending)——————
2y17(17 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
MAZE · 16,142 shares · as of Aug 13, 2026
085,602171,204256,805342,4072026SHARES HELD
Trading cadence · quarterly flow
BUY ● SELL ●
2025
2025
2026
2026
2026
FLOW · 15 buys / 35 sellsCOVERAGE · 5 quarters
Form 4 filings · all activity
COMPANYTYPESHARESPRICEVALUEHELD AFTERTRADE DATEFILEDDETAILS
MAZE
MAZE THERAPEUTICS, INC.
PURCHASE
President, R&D & CMO
16,142$10.42$168.2K16,142Aug 13, 2026Aug 14, 2026 ↗View →
MAZE
MAZE THERAPEUTICS, INC.
SALE
President, R&D & CMO
16,142——176,803Aug 13, 2026Aug 14, 2026 ↗View →
MAZE
MAZE THERAPEUTICS, INC.
SALE10b5-1
10b5-1 plan
16,142$27.61$445.6K0Aug 13, 2026Aug 14, 2026 ↗View →
MAZE
MAZE THERAPEUTICS, INC.
PURCHASE
President, R&D & CMO
14,609$10.42$152.2K14,609Jul 1, 2026Jul 2, 2026 ↗View →
MAZE
MAZE THERAPEUTICS, INC.
SALE10b5-1
10b5-1 plan
1,200$30.34$36.4K0Jul 1, 2026Jul 2, 2026 ↗View →
MAZE
MAZE THERAPEUTICS, INC.
SALE10b5-1
10b5-1 plan
13,409$29.87$400.5K1,200Jul 1, 2026Jul 2, 2026 ↗View →
MAZE
MAZE THERAPEUTICS, INC.
SALE
President, R&D & CMO
14,609——192,945Jul 1, 2026Jul 2, 2026 ↗View →
MAZE
MAZE THERAPEUTICS, INC.
SALE
President, R&D & CMO
14,853——207,554Jun 1, 2026Jun 3, 2026 ↗View →
MAZE
MAZE THERAPEUTICS, INC.
SALE10b5-1
10b5-1 plan
13,253$25.57$338.9K1,600Jun 1, 2026Jun 3, 2026 ↗View →
MAZE
MAZE THERAPEUTICS, INC.
PURCHASE
President, R&D & CMO
14,853$10.42$154.8K14,853Jun 1, 2026Jun 3, 2026 ↗View →
MAZE
MAZE THERAPEUTICS, INC.
SALE10b5-1
10b5-1 plan
1,600$26.36$42.2K0Jun 1, 2026Jun 3, 2026 ↗View →
MAZE
MAZE THERAPEUTICS, INC.
SALE10b5-1
10b5-1 plan
15,000$26.22$393.4K0May 14, 2026May 18, 2026 ↗View →
MAZE
MAZE THERAPEUTICS, INC.
SALE
President, R&D & CMO
15,000——222,407May 14, 2026May 18, 2026 ↗View →
MAZE
MAZE THERAPEUTICS, INC.
PURCHASE
President, R&D & CMO
15,000$10.42$156.3K15,000May 14, 2026May 18, 2026 ↗View →
MAZE
MAZE THERAPEUTICS, INC.
SALE10b5-1
10b5-1 plan
11,352$29.24$331.9K3,648Apr 1, 2026Apr 2, 2026 ↗View →
MAZE
MAZE THERAPEUTICS, INC.
SALE10b5-1
10b5-1 plan
300$31.07$9.3K0Apr 1, 2026Apr 2, 2026 ↗View →
MAZE
MAZE THERAPEUTICS, INC.
SALE
President, R&D & CMO
3,348$30.06$100.6K300Apr 1, 2026Apr 2, 2026 ↗View →
MAZE
MAZE THERAPEUTICS, INC.
SALE
President, R&D & CMO
15,000——237,407Apr 1, 2026Apr 2, 2026 ↗View →
MAZE
MAZE THERAPEUTICS, INC.
PURCHASE
President, R&D & CMO
15,000$10.42$156.3K15,000Apr 1, 2026Apr 2, 2026 ↗View →
MAZE
MAZE THERAPEUTICS, INC.
PURCHASE
President, R&D & CMO
15,000$10.42$156.3K15,000Mar 20, 2026Mar 20, 2026 ↗View →
MAZE
MAZE THERAPEUTICS, INC.
SALE
President, R&D & CMO
6,161$48.20$297.0K8,839Mar 20, 2026Mar 20, 2026 ↗View →
MAZE
MAZE THERAPEUTICS, INC.
SALE
President, R&D & CMO
15,000——252,407Mar 20, 2026Mar 20, 2026 ↗View →
MAZE
MAZE THERAPEUTICS, INC.
SALE
President, R&D & CMO
3,795$49.32$187.2K5,044Mar 20, 2026Mar 20, 2026 ↗View →
MAZE
MAZE THERAPEUTICS, INC.
SALE
President, R&D & CMO
5,044$50.02$252.3K0Mar 20, 2026Mar 20, 2026 ↗View →
MAZE
MAZE THERAPEUTICS, INC.
SALE10b5-1
10b5-1 plan
348$51.02$17.8K0Mar 10, 2026Mar 12, 2026 ↗View →
MAZE
MAZE THERAPEUTICS, INC.
SALE10b5-1
10b5-1 plan
29,652$50.45$1.50M348Mar 10, 2026Mar 12, 2026 ↗View →
MAZE
MAZE THERAPEUTICS, INC.
SALE
President, R&D & CMO
30,000——267,407Mar 10, 2026Mar 12, 2026 ↗View →
MAZE
MAZE THERAPEUTICS, INC.
PURCHASE
President, R&D & CMO
30,000$10.42$312.6K30,000Mar 10, 2026Mar 12, 2026 ↗View →
MAZE
MAZE THERAPEUTICS, INC.
PURCHASEGRANT
Stock grant
48,000——48,000Mar 2, 2026Mar 3, 2026 ↗View →
MAZE
MAZE THERAPEUTICS, INC.
PURCHASEGRANT
Stock grant
24,000——24,000Mar 2, 2026Mar 3, 2026 ↗View →
MAZE
MAZE THERAPEUTICS, INC.
SALE
President, R&D & CMO
8,364$45.89$383.8K6,036Feb 2, 2026Feb 4, 2026 ↗View →
MAZE
MAZE THERAPEUTICS, INC.
SALE
President, R&D & CMO
5,936$46.37$275.3K100Feb 2, 2026Feb 4, 2026 ↗View →
MAZE
MAZE THERAPEUTICS, INC.
SALE10b5-1
10b5-1 plan
600$44.21$26.5K14,400Feb 2, 2026Feb 4, 2026 ↗View →
MAZE
MAZE THERAPEUTICS, INC.
SALE10b5-1
10b5-1 plan
100$47.23$4.7K0Feb 2, 2026Feb 4, 2026 ↗View →
MAZE
MAZE THERAPEUTICS, INC.
PURCHASE
President, R&D & CMO
15,000$10.42$156.3K15,000Feb 2, 2026Feb 4, 2026 ↗View →
MAZE
MAZE THERAPEUTICS, INC.
SALE
President, R&D & CMO
15,000——297,407Feb 2, 2026Feb 4, 2026 ↗View →
MAZE
MAZE THERAPEUTICS, INC.
PURCHASE
President, R&D & CMO
25,156$10.42$262.1K25,156Jan 7, 2026Jan 9, 2026 ↗View →
MAZE
MAZE THERAPEUTICS, INC.
SALE
President, R&D & CMO
25,156——312,407Jan 7, 2026Jan 9, 2026 ↗View →
MAZE
MAZE THERAPEUTICS, INC.
SALE10b5-1
10b5-1 plan
25,156$40.20$1.01M0Jan 7, 2026Jan 9, 2026 ↗View →
MAZE
MAZE THERAPEUTICS, INC.
SALE10b5-1
10b5-1 plan
412$40.00$16.5K0Jan 5, 2026Jan 6, 2026 ↗View →
MAZE
MAZE THERAPEUTICS, INC.
PURCHASE
President, R&D & CMO
412$10.42$4.3K412Jan 5, 2026Jan 6, 2026 ↗View →
MAZE
MAZE THERAPEUTICS, INC.
SALE
President, R&D & CMO
412——337,563Jan 5, 2026Jan 6, 2026 ↗View →
MAZE
MAZE THERAPEUTICS, INC.
PURCHASE
President, R&D & CMO
4,432$10.42$46.2K4,432Jan 2, 2026Jan 6, 2026 ↗View →
MAZE
MAZE THERAPEUTICS, INC.
SALE
President, R&D & CMO
4,432——337,975Jan 2, 2026Jan 6, 2026 ↗View →
MAZE
MAZE THERAPEUTICS, INC.
SALE10b5-1
10b5-1 plan
4,432$40.43$179.2K0Jan 2, 2026Jan 6, 2026 ↗View →
MAZE
MAZE THERAPEUTICS, INC.
SALE
President, R&D & CMO
17,200$40.93$703.9K0Dec 29, 2025Dec 31, 2025 ↗View →
MAZE
MAZE THERAPEUTICS, INC.
SALE
President, R&D & CMO
45,000——342,407Dec 29, 2025Dec 31, 2025 ↗View →
MAZE
MAZE THERAPEUTICS, INC.
SALE
President, R&D & CMO
27,800$40.34$1.12M17,200Dec 29, 2025Dec 31, 2025 ↗View →
MAZE
MAZE THERAPEUTICS, INC.
PURCHASE
President, R&D & CMO
45,000$10.42$468.9K45,000Dec 29, 2025Dec 31, 2025 ↗View →
MAZE
MAZE THERAPEUTICS, INC.
PURCHASEGRANT
Stock grant
40,000——40,000Sep 22, 2025Sep 24, 2025 ↗View →
Other insiders · MAZE
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About this filer
CIK 0002050172
ROLE
President, R&D & CMO
PRIMARY
MAZE
COMPANIES
1
ACTIVE SINCE
Sep 2025
MARKETPEEL · /INSIDER/0002050172DATA · SEC EDGAR · FORM 4 · CONSOLIDATED TAPE
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The morning brief, before the bell.

One short email. Insider buys, congressional trades, and plain-English analysis.

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