Kevin J Martin
CIK 1567046 · View on SEC EDGAR ↗
Insider
First SEC filing: April 1, 2026 · Latest: April 1, 2026
On this page
Insider at
Insider transactions
0 buys (P)
0 sells (S)
Net:
$0
+ 42 non-open-market transactions below
last 12 months, based on the transactions shown below
Price change vs current quote, split-adjusted for corporate actions since the filing — not benchmarked, not annualized, not size-weighted
No open-market trades on record; showing all filings.
| Date | Ticker | Code | Shares | Price | Value | Owned after | Δ own | A/D | vs now |
|---|---|---|---|---|---|---|---|---|---|
| June 30, 2026 | GLW | A | 137 | $255.43 | $34,994 | 20,234 Direct | +0.68% | Acquired | -39.9% (price as of 2026-08-21) |
| March 31, 2026 | GLW | A | 257 | $135.97 | $34,944 | 20,097 Direct | +1.30% | Acquired | 12.9% (price as of 2026-08-21) |
| Feb. 11, 2026 | GLW | A | 1,806 | — | — | 52,853 Direct | +3.54% | Acquired | (price as of 2026-08-21) |
| Dec. 31, 2025 | GLW | A | 385 | $87.56 | $33,711 | 19,840 Direct | +1.98% | Acquired | 75.4% (price as of 2026-08-21) |
| Sept. 30, 2025 | GLW | A | 411 | $82.03 | $33,714 | 19,455 Direct | +2.16% | Acquired | 87.2% (price as of 2026-08-21) |
| June 30, 2025 | GLW | A | 642 | $52.59 | $33,763 | 19,044 Direct | +3.49% | Acquired | 192.0% (price as of 2026-08-21) |
| March 31, 2025 | GLW | A | 737 | $45.78 | $33,740 | 18,402 Direct | +4.17% | Acquired | 235.4% (price as of 2026-08-21) |
| Feb. 12, 2025 | GLW | A | 4,519 | — | — | 51,047 Direct | +9.71% | Acquired | (price as of 2026-08-21) |
| Dec. 31, 2024 | GLW | A | 708 | $47.52 | $33,644 | 17,665 Direct | +4.18% | Acquired | 223.1% (price as of 2026-08-21) |
| Sept. 30, 2024 | GLW | A | 720 | $45.15 | $32,508 | 16,957 Direct | +4.43% | Acquired | 240.1% (price as of 2026-08-21) |
| June 28, 2024 | GLW | A | 837 | $38.85 | $32,517 | 16,237 Direct | +5.44% | Acquired | 295.3% (price as of 2026-08-21) |
| March 28, 2024 | GLW | A | 986 | $32.96 | $32,499 | 15,400 Direct | +6.84% | Acquired | 365.9% (price as of 2026-08-21) |
| Feb. 7, 2024 | GLW | A | 7,078 | — | — | 46,528 Direct | +17.94% | Acquired | (price as of 2026-08-21) |
| Dec. 29, 2023 | GLW | A | 1,067 | $30.45 | $32,490 | 14,414 Direct | +7.99% | Acquired | 404.3% (price as of 2026-08-21) |
| Sept. 29, 2023 | GLW | A | 1,067 | $30.47 | $32,511 | 13,347 Direct | +8.69% | Acquired | 404.0% (price as of 2026-08-21) |
| June 30, 2023 | GLW | A | 557 | $35.04 | $19,517 | 12,280 Direct | +4.75% | Acquired | 338.2% (price as of 2026-08-21) |
| March 31, 2023 | GLW | A | 553 | $35.28 | $19,510 | 11,723 Direct | +4.95% | Acquired | 335.3% (price as of 2026-08-21) |
| Feb. 8, 2023 | GLW | A | 6,119 | — | — | 39,450 Direct | +18.36% | Acquired | (price as of 2026-08-21) |
| Feb. 8, 2023 | GLW | A | 888 | — | — | 888 Direct | — | Acquired | (price as of 2026-08-21) |
| Dec. 30, 2022 | GLW | A | 1,018 | $31.94 | $32,515 | 11,170 Direct | +10.03% | Acquired | 380.8% (price as of 2026-08-21) |
| Sept. 30, 2022 | GLW | A | 1,120 | $29.02 | $32,502 | 10,152 Direct | +12.40% | Acquired | 429.2% (price as of 2026-08-21) |
| June 30, 2022 | GLW | A | 1,031 | $31.51 | $32,487 | 9,032 Direct | +12.89% | Acquired | 387.3% (price as of 2026-08-21) |
| March 31, 2022 | GLW | A | 881 | $36.91 | $32,518 | 8,001 Direct | +12.37% | Acquired | 316.0% (price as of 2026-08-21) |
| Feb. 2, 2022 | GLW | A | 4,797 | $42.74 | $205,024 | 33,331 Direct | +16.81% | Acquired | 259.3% (price as of 2026-08-21) |
| Dec. 31, 2021 | GLW | A | 873 | $37.23 | $32,502 | 7,120 Direct | +13.97% | Acquired | 312.5% (price as of 2026-08-21) |
| Sept. 30, 2021 | GLW | A | 891 | $36.49 | $32,513 | 6,247 Direct | +16.64% | Acquired | 320.8% (price as of 2026-08-21) |
| June 30, 2021 | GLW | A | 795 | $40.90 | $32,516 | 5,356 Direct | +17.43% | Acquired | 275.5% (price as of 2026-08-21) |
| March 31, 2021 | GLW | A | 747 | $43.51 | $32,502 | 4,561 Direct | +19.59% | Acquired | 252.9% (price as of 2026-08-21) |
| Feb. 3, 2021 | GLW | A | 5,366 | — | — | 28,534 Direct | +23.16% | Acquired | (price as of 2026-08-21) |
| Dec. 31, 2020 | GLW | A | 542 | $36.00 | $19,512 | 3,814 Direct | +16.56% | Acquired | 326.6% (price as of 2026-08-21) |
| Sept. 30, 2020 | GLW | A | 602 | $32.41 | $19,511 | 3,272 Direct | +22.55% | Acquired | 373.8% (price as of 2026-08-21) |
| June 30, 2020 | GLW | A | 1,088 | $25.90 | $28,179 | 2,670 Direct | +68.77% | Acquired | 492.9% (price as of 2026-08-21) |
| May 15, 2020 | GLW | A | 1,544 | — | — | 1,544 Direct | — | Acquired | (price as of 2026-08-21) |
| March 31, 2020 | GLW | A | 1,582 | $20.54 | $32,494 | 1,582 Direct | — | Acquired | 647.6% (price as of 2026-08-21) |
| Feb. 5, 2020 | GLW | A | 6,539 | — | — | 23,168 Direct | +39.32% | Acquired | (price as of 2026-08-21) |
| Feb. 6, 2019 | GLW | A | 5,182 | — | — | 16,629 Direct | +45.27% | Acquired | (price as of 2026-08-21) |
| Feb. 7, 2018 | GLW | A | 5,533 | — | — | 11,447 Direct | +93.56% | Acquired | (price as of 2026-08-21) |
| Feb. 1, 2017 | GLW | A | 5,914 | — | — | 5,914 Direct | — | Acquired | (price as of 2026-08-21) |
| Feb. 3, 2016 | GLW | A | 8,433 | — | — | 31,506 Direct | +36.55% | Acquired | (price as of 2026-08-21) |
| Feb. 4, 2015 | GLW | A | 5,974 | — | — | 23,073 Direct | +34.94% | Acquired | (price as of 2026-08-21) |
| Feb. 5, 2014 | GLW | A | 7,692 | — | — | 17,099 Direct | +81.77% | Acquired | (price as of 2026-08-21) |
| Feb. 6, 2013 | GLW | A | 9,407 | — | — | 9,407 Direct | — | Acquired | (price as of 2026-08-21) |
P = Open-market purchase · S = Sale · A = Grant/award · M = Option exercise · G = Gift · F = Tax withholding
Insider transactions are not a recommendation; sales are often driven by liquidity or tax reasons.
Derivative holdings (Form 4 Table II)
Options, RSUs and convertible securities reported on Form 4 Table II.
| Date | Ticker | Security | Underlying | Exercise price | Expiration | Shares | A/D |
|---|---|---|---|---|---|---|---|
| June 30, 2026 | GLW | Restricted Stock Unit | Common Stock (137) | — | — | 137 | Acquired |
| March 31, 2026 | GLW | Restricted Stock Unit | Common Stock (257) | — | — | 257 | Acquired |
| Feb. 11, 2026 | GLW | Restricted Stock Unit | Common Stock (1,806) | — | — | 1,806 | Acquired |
| Dec. 31, 2025 | GLW | Restricted Stock Unit | Common Stock (385) | — | — | 385 | Acquired |
| Sept. 30, 2025 | GLW | Restricted Stock Unit | Common Stock (411) | — | — | 411 | Acquired |
| June 30, 2025 | GLW | Restricted Stock Unit | Common Stock (642) | — | — | 642 | Acquired |
| March 31, 2025 | GLW | Restricted Stock Unit | Common Stock (737) | — | — | 737 | Acquired |
| Feb. 12, 2025 | GLW | Restricted Stock Unit | Common Stock (4,519) | — | — | 4,519 | Acquired |
| Dec. 31, 2024 | GLW | Restricted Stock Unit | Common Stock (708) | — | — | 708 | Acquired |
| Sept. 30, 2024 | GLW | Restricted Stock Unit | Common Stock (720) | — | — | 720 | Acquired |
| June 28, 2024 | GLW | Restricted Stock Unit | Common Stock (837) | — | — | 837 | Acquired |
| March 28, 2024 | GLW | Restricted Stock Unit | Common Stock (986) | — | — | 986 | Acquired |
| Feb. 7, 2024 | GLW | Restricted Stock Unit | Common Stock (7,078) | — | — | 7,078 | Acquired |
| Dec. 29, 2023 | GLW | Restricted Stock Unit | Common Stock (1,067) | — | — | 1,067 | Acquired |
| Sept. 29, 2023 | GLW | Restricted Stock Unit | Common Stock (1,067) | — | — | 1,067 | Acquired |
| June 30, 2023 | GLW | Restricted Stock Unit | Common Stock (557) | — | — | 557 | Acquired |
| March 31, 2023 | GLW | Restricted Stock Unit | Common Stock (553) | — | — | 553 | Acquired |
| Feb. 8, 2023 | GLW | Restricted Stock Unit | Common Stock (6,119) | — | — | 6,119 | Acquired |
| Feb. 8, 2023 | GLW | Restricted Stock Unit | Common Stock (888) | — | — | 888 | Acquired |
| Dec. 30, 2022 | GLW | Restricted Stock Unit | Common Stock (1,018) | — | — | 1,018 | Acquired |
| Sept. 30, 2022 | GLW | Restricted Stock Unit | Common Stock (1,120) | — | — | 1,120 | Acquired |
| June 30, 2022 | GLW | Restricted Stock Unit | Common Stock (1,031) | — | — | 1,031 | Acquired |
| March 31, 2022 | GLW | Restricted Stock Unit | Common Stock (881) | — | — | 881 | Acquired |
| Feb. 2, 2022 | GLW | Restricted Stock Unit | Common Stock (4,797) | — | — | 4,797 | Acquired |
| Dec. 31, 2021 | GLW | Restricted Stock Unit | Common Stock (873) | — | — | 873 | Acquired |
| Sept. 30, 2021 | GLW | Restricted Stock Unit | Common Stock (891) | — | — | 891 | Acquired |
| June 30, 2021 | GLW | Restricted Stock Unit | Common Stock (795) | — | — | 795 | Acquired |
| March 31, 2021 | GLW | Restricted Stock Unit | Common Stock (747) | — | — | 747 | Acquired |
| Feb. 3, 2021 | GLW | Restricted Stock Unit | Common Stock (5,366) | — | — | 5,366 | Acquired |
| Dec. 31, 2020 | GLW | Restricted Stock Unit | Common Stock (542) | — | — | 542 | Acquired |
| Sept. 30, 2020 | GLW | Restricted Stock Unit | Common Stock (602) | — | — | 602 | Acquired |
| June 30, 2020 | GLW | Restricted Stock Unit | Common Stock (1,088) | — | — | 1,088 | Acquired |
| May 15, 2020 | GLW | Restricted Stock Unit | Common Stock (1,544) | — | — | 1,544 | Acquired |
| March 31, 2020 | GLW | Restricted Stock Unit | Common Stock (1,582) | — | — | 1,582 | Acquired |
| Feb. 5, 2020 | GLW | Restricted Stock Unit | Common Stock (6,539) | — | — | 6,539 | Acquired |
| Feb. 6, 2019 | GLW | Restricted Stock Unit | Common Stock (5,182) | — | — | 5,182 | Acquired |
| Feb. 7, 2018 | GLW | Restricted Stock Unit | Common Stock (5,533) | — | — | 5,533 | Acquired |
| Feb. 1, 2017 | GLW | Restricted Stock Unit | Common Stock (5,914) | — | — | 5,914 | Acquired |
Exercise/conversion price is blank when not applicable (e.g. RSUs).
Initial ownership (Form 3) 1 holding
Securities held when first becoming an insider, per SEC Form 3.
| Date | Ticker | Security | Shares | Ownership |
|---|---|---|---|---|
| Feb. 5, 2013 | GLW | No Securities Are Beneficially Owned | 0 | Direct |