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JZ

John Z. Zhang

GLW
SENIOR VP & GM, DISPLAY · CORNING INC /NY · CIK 0001825618
FILING MIX · LIFETIME47%/53%
BUYS
54
SELLS
62
TOTAL VALUE
$20.64M
COMPANIES
1
ACTIVE SINCE
Feb 2021
HOLDINGS NOW
5,138
AVG SELL PX
$68.75
TRADE KIND
SHOWING 116 / 116
Trades · vs SPY
Loading price series…
Performance · forward returns vs SPY
18 backtested trades · 8 horizons · 19 pendingHow are these numbers computed? →
Forward-return performance of every backtestable P/S trade by John Z. Zhang, 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
7d18+50.00%+0.15%+0.06%+0.09%-0.15%—
14d18+50.00%+0.90%+0.27%+1.34%+0.51%—
30d18+52.94%+0.55%+0.41%+0.30%+0.17%—
60d18(1 pending)+47.06%+5.00%+2.66%+2.34%+2.89%—
90d18(2 pending)+37.50%+11.54%+4.98%+6.55%+3.37%—
180d18(3 pending)+46.67%+19.84%+8.69%+11.14%+1.25%—
1y18(4 pending)+35.71%+67.77%+14.45%+35.71%-6.07%—
2y18(9 pending)+44.44%+82.50%+27.12%+55.38%-5.38%—
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
GLW · 5,138 shares · as of May 11, 2026
015,39330,78646,17861,57120222023202420252026SHARES HELD
Trading cadence · quarterly flow
BUY ● SELL ●
2021
2021
2021
2021
2022
2022
2022
2022
2023
2023
2023
2023
2024
2024
2024
2024
2025
2025
2025
2025
2026
2026
FLOW · 54 buys / 62 sellsCOVERAGE · 22 quarters
Form 4 filings · all activity
COMPANYTYPESHARESPRICEVALUEHELD AFTERTRADE DATEFILEDDETAILS
GLW
CORNING INC /NY
SALE
Exec. Vice President & CCDO
10,000$198.34$1.98M5,138May 11, 2026May 12, 2026 ↗View →
GLW
CORNING INC /NY
SALE
Exec. Vice President & CCDO
15,000$184.67$2.77M15,138May 6, 2026May 6, 2026 ↗View →
GLW
CORNING INC /NY
PURCHASE
Exec. Vice President & CCDO
18,884——61,571Apr 15, 2026Apr 16, 2026 ↗View →
GLW
CORNING INC /NY
SALE
Exec. Vice President & CCDO
42,687——0Apr 15, 2026Apr 16, 2026 ↗View →
GLW
CORNING INC /NY
SALE
Exec. Vice President & CCDO
18,884——0Apr 15, 2026Apr 16, 2026 ↗View →
GLW
CORNING INC /NY
SALE
Exec. Vice President & CCDO
31,433$168.27$5.29M30,138Apr 15, 2026Apr 16, 2026 ↗View →
GLW
CORNING INC /NY
PURCHASE
Exec. Vice President & CCDO
42,687——42,687Apr 15, 2026Apr 16, 2026 ↗View →
GLW
CORNING INC /NY
PURCHASEGRANT
Stock grant
9,692——9,692Apr 1, 2026Apr 2, 2026 ↗View →
GLW
CORNING INC /NY
SALE
Exec. Vice President & CCDO
1,531$133.75$204.8K0Feb 12, 2026Feb 12, 2026 ↗View →
GLW
CORNING INC /NY
SALE
Exec. Vice President & CCDO
2,476——0Feb 9, 2026Feb 11, 2026 ↗View →
GLW
CORNING INC /NY
PURCHASE
Exec. Vice President & CCDO
2,476——2,476Feb 9, 2026Feb 11, 2026 ↗View →
GLW
CORNING INC /NY
SALE
Exec. Vice President & CCDO
945$131.39$124.2K1,531Feb 9, 2026Feb 11, 2026 ↗View →
GLW
CORNING INC /NY
PURCHASEGRANT
Stock grant
15,591——35,839Feb 4, 2026Feb 6, 2026 ↗View →
GLW
CORNING INC /NY
PURCHASEGRANT
Stock grant
20,932——42,687Feb 4, 2026Feb 6, 2026 ↗View →
GLW
CORNING INC /NY
PURCHASEGRANT
Stock grant
16,891——16,891Feb 4, 2026Feb 6, 2026 ↗View →
GLW
CORNING INC /NY
SALE
Exec. Vice President & CCDO
1,212$65.53$79.4K0Aug 12, 2025Aug 12, 2025 ↗View →
GLW
CORNING INC /NY
SALE
Exec. Vice President & CCDO
1,264$65.77$83.1K1,212Aug 8, 2025Aug 12, 2025 ↗View →
GLW
CORNING INC /NY
PURCHASE
Exec. Vice President & CCDO
2,476——2,476Aug 8, 2025Aug 12, 2025 ↗View →
GLW
CORNING INC /NY
SALE
Exec. Vice President & CCDO
2,476——2,476Aug 8, 2025Aug 12, 2025 ↗View →
GLW
CORNING INC /NY
SALE
Exec. Vice President & CCDO
9,610$49.29$473.7K0May 28, 2025May 29, 2025 ↗View →
GLW
CORNING INC /NY
SALE
Exec. Vice President & CCDO
8,000$46.91$375.3K9,610May 12, 2025May 13, 2025 ↗View →
GLW
CORNING INC /NY
SALE
SVP&GM Glass Innov. & Asia
21,539——0Apr 15, 2025Apr 17, 2025 ↗View →
GLW
CORNING INC /NY
SALE
SVP&GM Glass Innov. & Asia
14,439——0Apr 15, 2025Apr 17, 2025 ↗View →
GLW
CORNING INC /NY
SALE
SVP&GM Glass Innov. & Asia
18,368$41.78$767.4K17,610Apr 15, 2025Apr 17, 2025 ↗View →
GLW
CORNING INC /NY
PURCHASE
SVP&GM Glass Innov. & Asia
21,539——21,539Apr 15, 2025Apr 17, 2025 ↗View →
GLW
CORNING INC /NY
PURCHASE
SVP&GM Glass Innov. & Asia
14,439——35,978Apr 15, 2025Apr 17, 2025 ↗View →
GLW
CORNING INC /NY
PURCHASEGRANT
Stock grant
24,374——24,374Apr 1, 2025Apr 3, 2025 ↗View →
GLW
CORNING INC /NY
SALE
SVP&GM Glass Innov. & Asia
14,111$52.78$744.8K0Feb 18, 2025Feb 19, 2025 ↗View →
GLW
CORNING INC /NY
PURCHASE
SVP&GM Glass Innov. & Asia
12,529$33.92$425.0K14,111Feb 18, 2025Feb 19, 2025 ↗View →
GLW
CORNING INC /NY
SALE
SVP&GM Glass Innov. & Asia
12,529——0Feb 18, 2025Feb 19, 2025 ↗View →
GLW
CORNING INC /NY
SALE
SVP&GM Glass Innov. & Asia
2,475——4,952Feb 10, 2025Feb 12, 2025 ↗View →
GLW
CORNING INC /NY
SALE
SVP&GM Glass Innov. & Asia
893$53.05$47.4K1,582Feb 10, 2025Feb 12, 2025 ↗View →
GLW
CORNING INC /NY
PURCHASE
SVP&GM Glass Innov. & Asia
2,475——2,475Feb 10, 2025Feb 12, 2025 ↗View →
GLW
CORNING INC /NY
PURCHASEGRANT
Stock grant
14,717——21,539Feb 4, 2025Feb 6, 2025 ↗View →
GLW
CORNING INC /NY
PURCHASEGRANT
Stock grant
16,996——21,755Feb 4, 2025Feb 6, 2025 ↗View →
GLW
CORNING INC /NY
PURCHASEGRANT
Stock grant
20,248——20,248Feb 4, 2025Feb 6, 2025 ↗View →
GLW
CORNING INC /NY
SALE
SVP&GM Glass Innov. & Asia
5,175$48.36$250.3K0Nov 13, 2024Nov 14, 2024 ↗View →
GLW
CORNING INC /NY
PURCHASE
SVP&GM Glass Innov. & Asia
5,175$19.65$101.7K5,175Nov 13, 2024Nov 14, 2024 ↗View →
GLW
CORNING INC /NY
SALE
SVP&GM Glass Innov. & Asia
5,175——0Nov 13, 2024Nov 14, 2024 ↗View →
GLW
CORNING INC /NY
SALE
SVP&GM Display, MCE & Asia
12,918$39.73$513.2K0Aug 13, 2024Aug 15, 2024 ↗View →
GLW
CORNING INC /NY
PURCHASE
SVP&GM Display, MCE & Asia
2,475——13,830Aug 8, 2024Aug 12, 2024 ↗View →
GLW
CORNING INC /NY
SALE
SVP&GM Display, MCE & Asia
2,475——7,427Aug 8, 2024Aug 12, 2024 ↗View →
GLW
CORNING INC /NY
PURCHASE
SVP&GM Display, MCE & Asia
721——14,551Aug 8, 2024Aug 12, 2024 ↗View →
GLW
CORNING INC /NY
SALE
SVP&GM Display, MCE & Asia
721——0Aug 8, 2024Aug 12, 2024 ↗View →
GLW
CORNING INC /NY
SALE
SVP&GM Display, MCE & Asia
1,633$38.61$63.1K12,918Aug 8, 2024Aug 12, 2024 ↗View →
GLW
CORNING INC /NY
SALE
SVP&GM Display, MCE & Asia
12,546$33.42$419.3K11,355May 2, 2024May 2, 2024 ↗View →
GLW
CORNING INC /NY
PURCHASE
SVP&GM Display, MCE & Asia
13,652——35,746Apr 15, 2024Apr 17, 2024 ↗View →
GLW
CORNING INC /NY
SALE
SVP&GM Display, MCE & Asia
9,548——0Apr 15, 2024Apr 17, 2024 ↗View →
GLW
CORNING INC /NY
PURCHASE
SVP&GM Display, MCE & Asia
9,548——22,094Apr 15, 2024Apr 17, 2024 ↗View →
GLW
CORNING INC /NY
SALE
SVP&GM Display, MCE & Asia
13,652——0Apr 15, 2024Apr 17, 2024 ↗View →
GLW
CORNING INC /NY
SALE
SVP&GM Display, MCE & Asia
11,845$31.29$370.6K23,901Apr 15, 2024Apr 17, 2024 ↗View →
GLW
CORNING INC /NY
PURCHASEGRANT
Stock grant
22,498——22,498Apr 1, 2024Apr 3, 2024 ↗View →
GLW
CORNING INC /NY
SALE
SVP&GM Display & Corning Asia
6,607$32.02$211.6K12,546Feb 15, 2024Feb 16, 2024 ↗View →
GLW
CORNING INC /NY
SALE
SVP&GM Display & Corning Asia
2,462$31.73$78.1K19,153Feb 8, 2024Feb 12, 2024 ↗View →
GLW
CORNING INC /NY
PURCHASE
SVP&GM Display & Corning Asia
4,951——20,175Feb 8, 2024Feb 12, 2024 ↗View →
GLW
CORNING INC /NY
SALE
SVP&GM Display & Corning Asia
4,951——9,902Feb 8, 2024Feb 12, 2024 ↗View →
GLW
CORNING INC /NY
SALE
SVP&GM Display & Corning Asia
1,440——721Feb 8, 2024Feb 12, 2024 ↗View →
GLW
CORNING INC /NY
PURCHASE
SVP&GM Display & Corning Asia
1,440——21,615Feb 8, 2024Feb 12, 2024 ↗View →
GLW
CORNING INC /NY
PURCHASEGRANT
Stock grant
4,029——13,652Feb 7, 2024Feb 8, 2024 ↗View →
GLW
CORNING INC /NY
PURCHASEGRANT
Stock grant
3,638——6,822Feb 7, 2024Feb 8, 2024 ↗View →
GLW
CORNING INC /NY
PURCHASEGRANT
Stock grant
4,759——4,759Feb 7, 2024Feb 8, 2024 ↗View →
GLW
CORNING INC /NY
SALE
Sr VP&GM Display &Corning Asia
4,784——0May 15, 2023May 17, 2023 ↗View →
GLW
CORNING INC /NY
PURCHASE
Sr VP&GM Display &Corning Asia
4,784——17,330May 15, 2023May 17, 2023 ↗View →
GLW
CORNING INC /NY
PURCHASE
Sr VP&GM Display &Corning Asia
690——18,020May 15, 2023May 17, 2023 ↗View →
GLW
CORNING INC /NY
SALE
Sr VP&GM Display &Corning Asia
2,796$31.20$87.2K15,224May 15, 2023May 17, 2023 ↗View →
GLW
CORNING INC /NY
SALE
Sr VP&GM Display &Corning Asia
690——0May 15, 2023May 17, 2023 ↗View →
GLW
CORNING INC /NY
SALE
Sr VP&GM Display &Corning Asia
15,000$31.45$471.8K12,546May 5, 2023May 9, 2023 ↗View →
GLW
CORNING INC /NY
SALE
Sr VP&GM Display &Corning Asia
28,188$34.78$980.4K27,546Apr 14, 2023Apr 18, 2023 ↗View →
GLW
CORNING INC /NY
PURCHASE
Sr VP&GM Display &Corning Asia
17,268——55,734Apr 14, 2023Apr 18, 2023 ↗View →
GLW
CORNING INC /NY
SALE
Sr VP&GM Display &Corning Asia
17,268——0Apr 14, 2023Apr 18, 2023 ↗View →
GLW
CORNING INC /NY
SALE
Sr VP&GM Display &Corning Asia
38,466——0Apr 14, 2023Apr 18, 2023 ↗View →
GLW
CORNING INC /NY
PURCHASE
Sr VP&GM Display &Corning Asia
38,466——38,466Apr 14, 2023Apr 18, 2023 ↗View →
GLW
CORNING INC /NY
PURCHASEGRANT
Stock grant
18,884——18,884Apr 3, 2023Apr 5, 2023 ↗View →
GLW
CORNING INC /NY
SALE
Senior VP & GM, Display
5,744$35.52$204.0K0Feb 16, 2023Feb 17, 2023 ↗View →
GLW
CORNING INC /NY
PURCHASEGRANT
Stock grant
14,853——14,853Feb 8, 2023Feb 10, 2023 ↗View →
GLW
CORNING INC /NY
PURCHASEGRANT
Stock grant
3,184——3,184Feb 8, 2023Feb 10, 2023 ↗View →
GLW
CORNING INC /NY
PURCHASEGRANT
Stock grant
2,105——9,623Feb 8, 2023Feb 10, 2023 ↗View →
GLW
CORNING INC /NY
PURCHASEGRANT
Stock grant
2,161——2,161Feb 8, 2023Feb 10, 2023 ↗View →
GLW
CORNING INC /NY
PURCHASEGRANT
Stock grant
10,802——38,466Feb 8, 2023Feb 10, 2023 ↗View →
GLW
CORNING INC /NY
SALE
Senior VP & GM, Display
4,655$36.00$167.6K5,744Feb 3, 2023Feb 6, 2023 ↗View →
GLW
CORNING INC /NY
PURCHASE
Senior VP & GM, Display
690——13,195May 16, 2022May 18, 2022 ↗View →
GLW
CORNING INC /NY
SALE
Senior VP & GM, Display
4,784——4,784May 16, 2022May 18, 2022 ↗View →
GLW
CORNING INC /NY
PURCHASE
Senior VP & GM, Display
4,784——12,505May 16, 2022May 18, 2022 ↗View →
GLW
CORNING INC /NY
SALE
Senior VP & GM, Display
2,796$35.20$98.4K10,399May 16, 2022May 18, 2022 ↗View →
GLW
CORNING INC /NY
SALE
Senior VP & GM, Display
690——690May 16, 2022May 18, 2022 ↗View →
GLW
CORNING INC /NY
SALE
Senior VP & GM, Display
6,265——0Apr 18, 2022Apr 20, 2022 ↗View →
GLW
CORNING INC /NY
PURCHASE
Senior VP & GM, Display
6,265——10,920Apr 18, 2022Apr 20, 2022 ↗View →
GLW
CORNING INC /NY
SALE
Senior VP & GM, Display
3,199$33.87$108.4K7,721Apr 18, 2022Apr 20, 2022 ↗View →
GLW
CORNING INC /NY
PURCHASEGRANT
Stock grant
14,439——14,439Apr 1, 2022Apr 5, 2022 ↗View →
GLW
CORNING INC /NY
SALE
Senior VP & GM, Display
13,320$42.01$559.6K4,655Feb 4, 2022Feb 4, 2022 ↗View →
GLW
CORNING INC /NY
PURCHASE
Senior VP & GM, Display
13,320$27.03$360.0K17,975Feb 4, 2022Feb 4, 2022 ↗View →
GLW
CORNING INC /NY
SALE
Senior VP & GM, Display
13,320——0Feb 4, 2022Feb 4, 2022 ↗View →
GLW
CORNING INC /NY
PURCHASEGRANT
Stock grant
7,518——7,518Feb 2, 2022Feb 4, 2022 ↗View →
GLW
CORNING INC /NY
PURCHASEGRANT
Stock grant
13,599——27,664Feb 2, 2022Feb 4, 2022 ↗View →
GLW
CORNING INC /NY
PURCHASE
Senior VP & GM, Display
690——7,336May 17, 2021May 19, 2021 ↗View →
GLW
CORNING INC /NY
SALE
Senior VP & GM, Display
4,784——9,568May 17, 2021May 19, 2021 ↗View →
GLW
CORNING INC /NY
SALE
Senior VP & GM, Display
690——1,380May 17, 2021May 19, 2021 ↗View →
GLW
CORNING INC /NY
PURCHASE
Senior VP & GM, Display
4,784——6,646May 17, 2021May 19, 2021 ↗View →
GLW
CORNING INC /NY
SALE
Senior VP & GM, Display
2,681$44.19$118.5K4,655May 17, 2021May 19, 2021 ↗View →
GLW
CORNING INC /NY
SALE
Senior VP & GM, Display
11,668——0May 3, 2021May 5, 2021 ↗View →
GLW
CORNING INC /NY
SALE
Senior VP & GM, Display
16,843$44.62$751.5K4,432May 3, 2021May 5, 2021 ↗View →
GLW
CORNING INC /NY
PURCHASE
Senior VP & GM, Display
11,668$27.00$315.0K16,100May 3, 2021May 5, 2021 ↗View →
GLW
CORNING INC /NY
SALE
Senior VP & GM, Display
2,570$44.60$114.6K1,862May 3, 2021May 5, 2021 ↗View →
GLW
CORNING INC /NY
PURCHASE
Senior VP & GM, Display
5,175$19.65$101.7K21,275May 3, 2021May 5, 2021 ↗View →
GLW
CORNING INC /NY
SALE
Senior VP & GM, Display
5,175——5,175May 3, 2021May 5, 2021 ↗View →
GLW
CORNING INC /NY
SALE
Senior VP & GM, Display
2,967$45.90$136.2K4,432Apr 15, 2021Apr 19, 2021 ↗View →
GLW
CORNING INC /NY
PURCHASE
Senior VP & GM, Display
7,399——7,399Apr 15, 2021Apr 19, 2021 ↗View →
GLW
CORNING INC /NY
SALE
Senior VP & GM, Display
7,399——0Apr 15, 2021Apr 19, 2021 ↗View →
GLW
CORNING INC /NY
PURCHASEGRANT
Stock grant
9,548——9,548Apr 1, 2021Apr 5, 2021 ↗View →
GLW
CORNING INC /NY
SALE
Senior VP & GM, Display
11,409$39.23$447.6K0Mar 1, 2021Mar 2, 2021 ↗View →
GLW
CORNING INC /NY
SALE
Senior VP & GM, Display
4,189——0Mar 1, 2021Mar 2, 2021 ↗View →
GLW
CORNING INC /NY
SALE
Senior VP & GM, Display
3,031——0Mar 1, 2021Mar 2, 2021 ↗View →
GLW
CORNING INC /NY
PURCHASE
Senior VP & GM, Display
4,189$20.89$87.5K7,220Mar 1, 2021Mar 2, 2021 ↗View →
GLW
CORNING INC /NY
PURCHASE
Senior VP & GM, Display
4,189$20.89$87.5K11,409Mar 1, 2021Mar 2, 2021 ↗View →
GLW
CORNING INC /NY
PURCHASE
Senior VP & GM, Display
3,031$22.68$68.7K3,031Mar 1, 2021Mar 2, 2021 ↗View →
GLW
CORNING INC /NY
PURCHASEGRANT
Stock grant
14,065——14,065Feb 3, 2021Feb 5, 2021 ↗View →
Other insiders · GLW
Loading peer insiders…
About this filer
CIK 0001825618
ROLE
Senior VP & GM, Display
PRIMARY
GLW
COMPANIES
1
ACTIVE SINCE
Feb 2021
MARKETPEEL · /INSIDER/0001825618DATA · SEC EDGAR · FORM 4 · CONSOLIDATED TAPE
FREE · DAILY · 6 AM ET

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