Chen Stephen C., General Counsel at Duolingo, Inc. ($DUOL), made 19 open market sales of company shares over the past year, totaling about $3.8 million. His most recent sale occurred on February 18, 2026. These transactions rank 2,330th among 11,678 insiders in our database, trailing the average sale value of $8.6 million across 6 transactions per seller. Chen Stephen C. recorded no open market purchases in the period.
| Transaction Date | Company | Ticker | Insider Name | Title | Transaction Type | Security | Shares | Price | Shares Owned Following | Total Shares Outstanding | % of Owned | % of Outstanding |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Feb. 17, 2026 | Duolingo, Inc. | $DUOL | Chen Stephen C. | General Counsel | S | Class A Common Stock | 896 | $110.06 | 32,446.0000 | 49,144,000 | 2.69% | 0.00% |
| Feb. 18, 2026 | Duolingo, Inc. | $DUOL | Chen Stephen C. | General Counsel | S | Class A Common Stock | 821 | $111.83 | 31,625.0000 | 49,144,000 | 2.53% | 0.00% |
| Feb. 18, 2026 | Duolingo, Inc. | $DUOL | Chen Stephen C. | General Counsel | S | Class A Common Stock | 520 | $114.55 | 30,625.0000 | 49,144,000 | 1.67% | 0.00% |
| Feb. 18, 2026 | Duolingo, Inc. | $DUOL | Chen Stephen C. | General Counsel | S | Class A Common Stock | 480 | $113.95 | 31,145.0000 | 49,144,000 | 1.52% | 0.00% |
| Feb. 18, 2026 | Duolingo, Inc. | $DUOL | Chen Stephen C. | General Counsel | S | Class A Common Stock | 80 | $115.47 | 30,545.0000 | 49,144,000 | 0.26% | 0.00% |
| Dec. 29, 2025 | Duolingo, Inc. | $DUOL | Chen Stephen C. | General Counsel | M | Class A Common Stock | 1800 | $14.42 | 33,342.0000 | 49,144,000 | 5.71% | 0.00% |
| Dec. 29, 2025 | Duolingo, Inc. | $DUOL | Chen Stephen C. | General Counsel | M | Stock Option (Right to Buy) | 1800 | $0.00 | 706.0000 | 49,144,000 | 71.83% | 0.00% |
| Nov. 18, 2025 | Duolingo, Inc. | $DUOL | Chen Stephen C. | General Counsel | S | Class A Common Stock | 320 | $175.94 | 32,022.0000 | 49,144,000 | 0.99% | 0.00% |
| Nov. 18, 2025 | Duolingo, Inc. | $DUOL | Chen Stephen C. | General Counsel | S | Class A Common Stock | 120 | $173.97 | 32,936.0000 | 49,144,000 | 0.36% | 0.00% |
| Nov. 17, 2025 | Duolingo, Inc. | $DUOL | Chen Stephen C. | General Counsel | S | Class A Common Stock | 1282 | $177.95 | 33,056.0000 | 49,144,000 | 3.73% | 0.00% |
| Nov. 18, 2025 | Duolingo, Inc. | $DUOL | Chen Stephen C. | General Counsel | S | Class A Common Stock | 480 | $177.19 | 31,542.0000 | 49,144,000 | 1.50% | 0.00% |
| Nov. 18, 2025 | Duolingo, Inc. | $DUOL | Chen Stephen C. | General Counsel | S | Class A Common Stock | 594 | $175.15 | 32,342.0000 | 49,144,000 | 1.80% | 0.00% |
| Sept. 18, 2025 | Duolingo, Inc. | $DUOL | Chen Stephen C. | General Counsel | M | Class A Common Stock | 1700 | $14.42 | 34,338.0000 | 47,101,000 | 5.21% | 0.00% |
| Sept. 18, 2025 | Duolingo, Inc. | $DUOL | Chen Stephen C. | General Counsel | M | Stock Option (Right to Buy) | 1700 | $0.00 | 2,506.0000 | 47,101,000 | 40.42% | 0.00% |
| Aug. 26, 2025 | Duolingo, Inc. | $DUOL | Chen Stephen C. | General Counsel | S | Class A Common Stock | 1515 | $321.36 | 32,638.0000 | 47,101,000 | 4.44% | 0.00% |
| Aug. 15, 2025 | Duolingo, Inc. | $DUOL | Chen Stephen C. | General Counsel | S | Class A Common Stock | 1282 | $329.03 | 34,153.0000 | 47,101,000 | 3.62% | 0.00% |
| Aug. 15, 2025 | Duolingo, Inc. | $DUOL | Chen Stephen C. | General Counsel | G | Class A Common Stock | 750 | $0.00 | 35,435.0000 | 47,101,000 | 2.07% | 0.00% |
| May 16, 2025 | Duolingo, Inc. | $DUOL | Chen Stephen C. | General Counsel | S | Class A Common Stock | 200 | $531.44 | 36,185.0000 | 47,101,000 | 0.55% | 0.00% |
| May 16, 2025 | Duolingo, Inc. | $DUOL | Chen Stephen C. | General Counsel | S | Class A Common Stock | 1268 | $525.07 | 37,552.0000 | 47,101,000 | 3.27% | 0.00% |
| May 16, 2025 | Duolingo, Inc. | $DUOL | Chen Stephen C. | General Counsel | S | Class A Common Stock | 300 | $526.44 | 37,252.0000 | 47,101,000 | 0.80% | 0.00% |
| May 16, 2025 | Duolingo, Inc. | $DUOL | Chen Stephen C. | General Counsel | S | Class A Common Stock | 300 | $527.61 | 36,952.0000 | 47,101,000 | 0.81% | 0.00% |
| May 16, 2025 | Duolingo, Inc. | $DUOL | Chen Stephen C. | General Counsel | S | Class A Common Stock | 467 | $529.25 | 36,485.0000 | 47,101,000 | 1.26% | 0.00% |
| May 16, 2025 | Duolingo, Inc. | $DUOL | Chen Stephen C. | General Counsel | S | Class A Common Stock | 100 | $530.22 | 36,385.0000 | 47,101,000 | 0.27% | 0.00% |
| May 15, 2025 | Duolingo, Inc. | $DUOL | Chen Stephen C. | General Counsel | A | Class A Common Stock | 5443 | $0.00 | 40,077.0000 | 47,101,000 | 15.72% | 0.01% |
| May 15, 2025 | Duolingo, Inc. | $DUOL | Chen Stephen C. | General Counsel | S | Class A Common Stock | 1257 | $531.71 | 38,820.0000 | 47,101,000 | 3.14% | 0.00% |
| Feb. 18, 2025 | Duolingo, Inc. | $DUOL | Chen Stephen C. | General Counsel | S | Class A Common Stock | 898 | $435.28 | 34,634.0000 | 47,101,000 | 2.53% | 0.00% |
| Feb. 18, 2025 | Duolingo, Inc. | $DUOL | Chen Stephen C. | General Counsel | S | Class A Common Stock | 1166 | $435.00 | 35,532.0000 | 47,101,000 | 3.18% | 0.00% |
| Feb. 6, 2025 | Duolingo, Inc. | $DUOL | Chen Stephen C. | General Counsel | M | Stock Option (Right to Buy) | 1331 | $0.00 | 4,206.0000 | 47,101,000 | 24.04% | 0.00% |
| Feb. 6, 2025 | Duolingo, Inc. | $DUOL | Chen Stephen C. | General Counsel | M | Class A Common Stock | 1331 | $14.42 | 36,698.0000 | 47,101,000 | 3.76% | 0.00% |
| Dec. 19, 2024 | Duolingo, Inc. | $DUOL | Chen Stephen C. | General Counsel | M | Class A Common Stock | 3700 | $14.42 | 35,367.0000 | 47,969,000 | 11.68% | 0.01% |
| Dec. 19, 2024 | Duolingo, Inc. | $DUOL | Chen Stephen C. | General Counsel | M | Stock Option (Right to Buy) | 3700 | $0.00 | 5,537.0000 | 47,969,000 | 40.06% | 0.01% |
| Nov. 18, 2024 | Duolingo, Inc. | $DUOL | Chen Stephen C. | General Counsel | S | Class A Common Stock | 200 | $312.19 | 31,667.0000 | 47,969,000 | 0.63% | 0.00% |
| Nov. 18, 2024 | Duolingo, Inc. | $DUOL | Chen Stephen C. | General Counsel | S | Class A Common Stock | 400 | $309.87 | 31,867.0000 | 47,969,000 | 1.24% | 0.00% |
| Nov. 18, 2024 | Duolingo, Inc. | $DUOL | Chen Stephen C. | General Counsel | S | Class A Common Stock | 1767 | $307.95 | 32,267.0000 | 47,969,000 | 5.19% | 0.00% |
| Nov. 18, 2024 | Duolingo, Inc. | $DUOL | Chen Stephen C. | General Counsel | S | Class A Common Stock | 275 | $307.04 | 34,034.0000 | 47,969,000 | 0.80% | 0.00% |
| Nov. 15, 2024 | Duolingo, Inc. | $DUOL | Chen Stephen C. | General Counsel | S | Class A Common Stock | 1249 | $309.30 | 34,309.0000 | 47,969,000 | 3.51% | 0.00% |
| Aug. 30, 2024 | Duolingo, Inc. | $DUOL | Chen Stephen C. | General Counsel | S | Class A Common Stock | 3173 | $209.54 | 50,486.0000 | 46,522,000 | 5.91% | 0.01% |
| Aug. 30, 2024 | Duolingo, Inc. | $DUOL | Chen Stephen C. | General Counsel | S | Class A Common Stock | 2815 | $210.62 | 47,671.0000 | 46,522,000 | 5.58% | 0.01% |
| Aug. 30, 2024 | Duolingo, Inc. | $DUOL | Chen Stephen C. | General Counsel | S | Class A Common Stock | 2977 | $211.62 | 44,694.0000 | 46,522,000 | 6.24% | 0.01% |
| Aug. 30, 2024 | Duolingo, Inc. | $DUOL | Chen Stephen C. | General Counsel | S | Class A Common Stock | 5677 | $212.69 | 39,017.0000 | 46,522,000 | 12.70% | 0.01% |
| Aug. 30, 2024 | Duolingo, Inc. | $DUOL | Chen Stephen C. | General Counsel | S | Class A Common Stock | 3459 | $213.42 | 35,558.0000 | 46,522,000 | 8.87% | 0.01% |
| Aug. 30, 2024 | Duolingo, Inc. | $DUOL | Chen Stephen C. | General Counsel | M | Stock Option (Right to Buy) | 7382 | $0.00 | 9,237.0000 | 46,522,000 | 44.42% | 0.02% |
| Aug. 30, 2024 | Duolingo, Inc. | $DUOL | Chen Stephen C. | General Counsel | S | Class A Common Stock | 1363 | $208.53 | 53,659.0000 | 46,522,000 | 2.48% | 0.00% |
| Aug. 30, 2024 | Duolingo, Inc. | $DUOL | Chen Stephen C. | General Counsel | M | Class A Common Stock | 7382 | $14.42 | 55,022.0000 | 46,522,000 | 15.50% | 0.02% |
| Aug. 15, 2024 | Duolingo, Inc. | $DUOL | Chen Stephen C. | General Counsel | S | Class A Common Stock | 1249 | $199.50 | 47,640.0000 | 46,522,000 | 2.55% | 0.00% |
| June 28, 2024 | Duolingo, Inc. | $DUOL | Chen Stephen C. | General Counsel | M | Class A Common Stock | 6715 | $14.42 | 48,889.0000 | 46,522,000 | 15.92% | 0.01% |
| June 28, 2024 | Duolingo, Inc. | $DUOL | Chen Stephen C. | General Counsel | M | Stock Option (Right to Buy) | 6715 | $0.00 | 16,619.0000 | 46,522,000 | 28.78% | 0.01% |
| May 15, 2024 | Duolingo, Inc. | $DUOL | Chen Stephen C. | General Counsel | A | Class A Common Stock | 9117 | $0.00 | 42,174.0000 | 46,522,000 | 27.58% | 0.02% |
| May 15, 2024 | Duolingo, Inc. | $DUOL | Chen Stephen C. | General Counsel | S | Class A Common Stock | 988 | $0.00 | 33,057.0000 | 46,522,000 | 2.90% | 0.00% |
| Feb. 15, 2024 | Duolingo, Inc. | $DUOL | Chen Stephen C. | General Counsel | S | Class A Common Stock | 988 | $0.00 | 34,045.0000 | 46,522,000 | 2.82% | 0.00% |
| Feb. 9, 2024 | Duolingo, Inc. | $DUOL | Chen Stephen C. | General Counsel | M | Stock Option (Right to Buy) | 2000 | $0.00 | 23,334.0000 | 46,522,000 | 7.89% | 0.00% |
| Feb. 9, 2024 | Duolingo, Inc. | $DUOL | Chen Stephen C. | General Counsel | M | Class A Common Stock | 2000 | $14.42 | 37,033.0000 | 46,522,000 | 5.71% | 0.00% |
| Feb. 9, 2024 | Duolingo, Inc. | $DUOL | Chen Stephen C. | General Counsel | S | Class A Common Stock | 2000 | $190.00 | 35,033.0000 | 46,522,000 | 5.40% | 0.00% |
| Jan. 4, 2024 | Duolingo, Inc. | $DUOL | Chen Stephen C. | General Counsel | S | Class A Common Stock | 2091 | $209.01 | 35,398.0000 | 46,522,000 | 5.58% | 0.00% |
| Jan. 4, 2024 | Duolingo, Inc. | $DUOL | Chen Stephen C. | General Counsel | M | Stock Option (Right to Buy) | 18000 | $0.00 | 25,334.0000 | 46,522,000 | 41.54% | 0.04% |
| Jan. 4, 2024 | Duolingo, Inc. | $DUOL | Chen Stephen C. | General Counsel | S | Class A Common Stock | 1586 | $207.19 | 42,211.0000 | 46,522,000 | 3.62% | 0.00% |
| Jan. 4, 2024 | Duolingo, Inc. | $DUOL | Chen Stephen C. | General Counsel | S | Class A Common Stock | 3840 | $205.98 | 43,797.0000 | 46,522,000 | 8.06% | 0.01% |
| Jan. 4, 2024 | Duolingo, Inc. | $DUOL | Chen Stephen C. | General Counsel | S | Class A Common Stock | 5396 | $205.20 | 47,637.0000 | 46,522,000 | 10.17% | 0.01% |
| Jan. 4, 2024 | Duolingo, Inc. | $DUOL | Chen Stephen C. | General Counsel | M | Class A Common Stock | 18000 | $14.42 | 53,033.0000 | 46,522,000 | 51.38% | 0.04% |
| Jan. 4, 2024 | Duolingo, Inc. | $DUOL | Chen Stephen C. | General Counsel | S | Class A Common Stock | 4722 | $208.17 | 37,489.0000 | 46,522,000 | 11.19% | 0.01% |
| Jan. 4, 2024 | Duolingo, Inc. | $DUOL | Chen Stephen C. | General Counsel | S | Class A Common Stock | 365 | $210.29 | 35,033.0000 | 46,522,000 | 1.03% | 0.00% |