SEC Form 4 reporting owner
Huang Jack Jiajia
Huang Jack Jiajia has filed 120 Form 4 transactions reported between March 26, 2026 and August 18, 2026, as Chief Executive Officer of 51Talk Online Education Group.
Name as filed: Huang Jack Jiajia
Open-market buys, 24 mo
$225.5M
114 lines
Open-market sales, 24 mo
None
reported
Companies
1
with Form 4 filings
Latest transaction
Aug 18, 2026
transaction date
Roles and reported holdings
Transaction history
All 120 reported transactions, newest first. Every row links to the Form 4 on SEC EDGAR.
| Date | Company | Type | Shares | Price | Value | Owned after | Filing |
|---|---|---|---|---|---|---|---|
| Aug 18, 2026 | COEChief Executive Officer | Option exerciseCode M · indirect | 137,500 | — | — | 42,388,800 | Form 4 |
| Aug 13, 2026 | COEChief Executive Officer | Open-market purchaseCode P · indirect | 35,400 | $20.83 | $737K@ $20.83 | 35,615,160 | Form 4 |
| Aug 12, 2026 | COEChief Executive Officer | Open-market purchaseCode P · indirect | 337,500 | $20.17 | $6.8M@ $20.17 | 35,428,140 | Form 4 |
| Aug 11, 2026 | COEChief Executive Officer | Open-market purchaseCode P · indirect | 254,820 | $19.61 | $5.0M@ $19.61 | 35,090,640 | Form 4 |
| Aug 10, 2026 | COEChief Executive Officer | Open-market purchaseCode P · indirect | 199,980 | $19.72 | $3.9M@ $19.72 | 34,835,820 | Form 4 |
| Aug 7, 2026 | COEChief Executive Officer | Open-market purchaseCode P · indirect | 90,480 | $19.39 | $1.8M@ $19.39 | 34,635,840 | Form 4 |
| Aug 6, 2026 | COEChief Executive Officer | Open-market purchaseCode P · indirect | 105,120 | $19.29 | $2.0M@ $19.29 | 34,545,360 | Form 4 |
| Aug 5, 2026 | COEChief Executive Officer | Open-market purchaseCode P · indirect | 158,460 | $19.20 | $3.0M@ $19.20 | 34,440,240 | Form 4 |
| Aug 4, 2026 | COEChief Executive Officer | Open-market purchaseCode P · indirect | 125,880 | $19.06 | $2.4M@ $19.06 | 34,281,780 | Form 4 |
| Aug 3, 2026 | COEChief Executive Officer | Open-market purchaseCode P · indirect | 333,840 | $18.48 | $6.2M@ $18.48 | 34,155,900 | Form 4 |
| Jul 31, 2026 | COEChief Executive Officer | Open-market purchaseCode P · indirect | 122,580 | $17.54 | $2.2M@ $17.54 | 33,822,060 | Form 4 |
| Jul 30, 2026 | COEChief Executive Officer | Open-market purchaseCode P · indirect | 194,460 | $17.21 | $3.3M@ $17.21 | 33,699,480 | Form 4 |
| Jul 29, 2026 | COEChief Executive Officer | Open-market purchaseCode P · indirect | 109,080 | $16.91 | $1.8M@ $16.91 | 33,505,020 | Form 4 |
| Jul 28, 2026 | COEChief Executive Officer | Open-market purchaseCode P · indirect | 169,980 | $16.88 | $2.9M@ $16.88 | 33,395,940 | Form 4 |
| Jul 27, 2026 | COEChief Executive Officer | Open-market purchaseCode P · indirect | 451,320 | $16.97 | $7.7M@ $16.97 | 33,225,960 | Form 4 |
| Jul 24, 2026 | COEChief Executive Officer | Open-market purchaseCode P · indirect | 185,880 | $16.26 | $3.0M@ $16.26 | 32,774,640 | Form 4 |
| Jul 23, 2026 | COEChief Executive Officer | Open-market purchaseCode P · indirect | 301,440 | $15.84 | $4.8M@ $15.84 | 32,588,760 | Form 4 |
| Jul 23, 2026 | COEChief Executive Officer | Open-market purchaseCode P · indirect | 60,000 | $15.54 | $932K@ $15.54 | 32,227,320 | Form 4 |
| Jul 22, 2026 | COEChief Executive Officer | Open-market purchaseCode P · indirect | 123,780 | $15.98 | $2.0M@ $15.98 | 32,167,320 | Form 4 |
| Jul 22, 2026 | COEChief Executive Officer | Open-market purchaseCode P · indirect | 59,940 | $15.95 | $956K@ $15.95 | 32,043,540 | Form 4 |
| Jul 21, 2026 | COEChief Executive Officer | Open-market purchaseCode P · indirect | 498,660 | $16.62 | $8.3M@ $16.62 | 31,983,600 | Form 4 |
| Jul 20, 2026 | COEChief Executive Officer | Open-market purchaseCode P · indirect | 112,500 | $16.68 | $1.9M@ $16.68 | 31,484,940 | Form 4 |
| Jul 17, 2026 | COEChief Executive Officer | Open-market purchaseCode P · indirect | 83,460 | $16.56 | $1.4M@ $16.56 | 31,372,440 | Form 4 |
| Jul 16, 2026 | COEChief Executive Officer | Open-market purchaseCode P · indirect | 111,840 | $16.60 | $1.9M@ $16.60 | 31,288,980 | Form 4 |
| Jul 15, 2026 | COEChief Executive Officer | Open-market purchaseCode P · indirect | 135,540 | $16.93 | $2.3M@ $16.93 | 31,177,140 | Form 4 |
| Jul 14, 2026 | COEChief Executive Officer | Open-market purchaseCode P · indirect | 178,800 | $17.23 | $3.1M@ $17.23 | 31,041,600 | Form 4 |
| Jul 14, 2026 | COEChief Executive Officer | Shares withheld for tax or exercise priceCode F · indirect | 12,000 | $17.13 | $206K@ $17.13 | 493,620 | Form 4 |
| Jul 13, 2026 | COEChief Executive Officer | Open-market purchaseCode P · indirect | 213,480 | $17.24 | $3.7M@ $17.24 | 30,862,800 | Form 4 |
| Jul 10, 2026 | COEChief Executive Officer | Option exerciseCode M · indirect | 72,720 | — | — | 505,620 | Form 4 |
| Jul 10, 2026 | COEChief Executive Officer | Open-market purchaseCode P · indirect | 95,040 | $16.71 | $1.6M@ $16.71 | 30,649,320 | Form 4 |
| Jul 9, 2026 | COEChief Executive Officer | Open-market purchaseCode P · indirect | 186,840 | $17.19 | $3.2M@ $17.19 | 30,554,280 | Form 4 |
| Jul 8, 2026 | COEChief Executive Officer | Open-market purchaseCode P · indirect | 185,880 | $16.45 | $3.1M@ $16.45 | 30,367,440 | Form 4 |
| Jul 7, 2026 | COEChief Executive Officer | Open-market purchaseCode P · indirect | 211,260 | $16.72 | $3.5M@ $16.72 | 30,181,560 | Form 4 |
| Jul 6, 2026 | COEChief Executive Officer | Open-market purchaseCode P · indirect | 165,420 | $16.46 | $2.7M@ $16.46 | 29,970,300 | Form 4 |
| Jul 2, 2026 | COEChief Executive Officer | Open-market purchaseCode P · indirect | 556,020 | $16.78 | $9.3M@ $16.78 | 29,804,880 | Form 4 |
| Jul 1, 2026 | COEChief Executive Officer | Open-market purchaseCode P · indirect | 286,800 | $16.57 | $4.8M@ $16.57 | 29,248,860 | Form 4 |
| Jun 30, 2026 | COEChief Executive Officer | Open-market purchaseCode P · indirect | 60 | $15.95 | $957@ $15.95 | 28,962,060 | Form 4 |
| Jun 30, 2026 | COEChief Executive Officer | Open-market purchaseCode P · indirect | 60,000 | $15.52 | $931K@ $15.52 | 28,962,000 | Form 4 |
| Jun 30, 2026 | COEChief Executive Officer | Open-market purchaseCode P · indirect | 293,520 | $15.98 | $4.7M@ $15.98 | 28,902,000 | Form 4 |
| Jun 30, 2026 | COEChief Executive Officer | Option exerciseCode M · indirect | 275,000 | — | — | 42,251,300 | Form 4 |
| Jun 29, 2026 | COEChief Executive Officer | Open-market purchaseCode P · indirect | 35,700 | $15.21 | $543K@ $15.21 | 28,608,480 | Form 4 |
| Jun 29, 2026 | COEChief Executive Officer | Open-market purchaseCode P · indirect | 60,000 | $15.20 | $912K@ $15.20 | 28,572,780 | Form 4 |
| Jun 29, 2026 | COEChief Executive Officer | Open-market purchaseCode P · indirect | 152,820 | $15.23 | $2.3M@ $15.23 | 28,512,780 | Form 4 |
| Jun 26, 2026 | COEChief Executive Officer | Open-market purchaseCode P · indirect | 151,800 | $15.61 | $2.4M@ $15.61 | 28,359,960 | Form 4 |
| Jun 26, 2026 | COEChief Executive Officer | Open-market purchaseCode P · indirect | 60 | $14.85 | $891@ $14.85 | 28,208,160 | Form 4 |
| Jun 25, 2026 | COEChief Executive Officer | Open-market purchaseCode P · indirect | 150,600 | $15.76 | $2.4M@ $15.76 | 28,208,100 | Form 4 |
| Jun 24, 2026 | COEChief Executive Officer | Open-market purchaseCode P · indirect | 58,500 | $14.81 | $866K@ $14.81 | 27,877,500 | Form 4 |
| Jun 24, 2026 | COEChief Executive Officer | Open-market purchaseCode P · indirect | 60,000 | $14.85 | $891K@ $14.85 | 27,819,000 | Form 4 |
| Jun 24, 2026 | COEChief Executive Officer | Open-market purchaseCode P · indirect | 210,000 | $15.46 | $3.2M@ $15.46 | 27,759,000 | Form 4 |
| Jun 24, 2026 | COEChief Executive Officer | Open-market purchaseCode P · indirect | 3,720 | $15.04 | $56K@ $15.04 | 27,549,000 | Form 4 |
| Jun 23, 2026 | COEChief Executive Officer | Open-market purchaseCode P · indirect | 30,000 | $16.00 | $480K@ $16.00 | 27,545,280 | Form 4 |
| Jun 23, 2026 | COEChief Executive Officer | Open-market purchaseCode P · indirect | 60,000 | $16.00 | $960K@ $16.00 | 27,455,280 | Form 4 |
| Jun 23, 2026 | COEChief Executive Officer | Open-market purchaseCode P · indirect | 72,780 | $16.01 | $1.2M@ $16.01 | 27,395,280 | Form 4 |
| Jun 23, 2026 | COEChief Executive Officer | Open-market purchaseCode P · indirect | 13,620 | $15.50 | $211K@ $15.50 | 27,322,500 | Form 4 |
| Jun 23, 2026 | COEChief Executive Officer | Open-market purchaseCode P · indirect | 12,000 | $15.63 | $188K@ $15.63 | 27,308,880 | Form 4 |
| Jun 22, 2026 | COEChief Executive Officer | Open-market purchaseCode P · indirect | 4,380 | $15.50 | $68K@ $15.50 | 27,296,880 | Form 4 |
| Jun 22, 2026 | COEChief Executive Officer | Open-market purchaseCode P · indirect | 12,000 | $15.86 | $190K@ $15.86 | 27,292,500 | Form 4 |
| Jun 22, 2026 | COEChief Executive Officer | Open-market purchaseCode P · indirect | 58,140 | $16.02 | $931K@ $16.02 | 27,280,500 | Form 4 |
| Jun 18, 2026 | COEChief Executive Officer | Open-market purchaseCode P · indirect | 6,000 | $16.50 | $99K@ $16.50 | 27,216,360 | Form 4 |
| Jun 18, 2026 | COEChief Executive Officer | Open-market purchaseCode P · indirect | 85,860 | $17.50 | $1.5M@ $17.50 | 27,210,360 | Form 4 |
| Jun 17, 2026 | COEChief Executive Officer | Open-market purchaseCode P · indirect | 39,960 | $17.20 | $687K@ $17.20 | 27,124,500 | Form 4 |
| Jun 16, 2026 | COEChief Executive Officer | Open-market purchaseCode P · indirect | 51,600 | $18.89 | $975K@ $18.89 | 27,084,540 | Form 4 |
| Jun 15, 2026 | COEChief Executive Officer | Open-market purchaseCode P · indirect | 20,640 | $19.63 | $405K@ $19.63 | 27,032,940 | Form 4 |
| Jun 12, 2026 | COEChief Executive Officer | Open-market purchaseCode P · indirect | 89,160 | $20.20 | $1.8M@ $20.20 | 27,012,300 | Form 4 |
| Jun 11, 2026 | COEChief Executive Officer | Open-market purchaseCode P · indirect | 29,700 | $22.10 | $656K@ $22.10 | 26,923,140 | Form 4 |
| Jun 10, 2026 | COEChief Executive Officer | Open-market purchaseCode P · indirect | 17,580 | $22.82 | $401K@ $22.82 | 26,893,440 | Form 4 |
| Jun 9, 2026 | COEChief Executive Officer | Open-market purchaseCode P · indirect | 35,880 | $21.89 | $785K@ $21.89 | 26,875,860 | Form 4 |
| Jun 8, 2026 | COEChief Executive Officer | Open-market purchaseCode P · indirect | 23,340 | $22.34 | $521K@ $22.34 | 26,839,980 | Form 4 |
| Jun 5, 2026 | COEChief Executive Officer | Open-market purchaseCode P · indirect | 14,700 | $22.74 | $334K@ $22.74 | 26,816,640 | Form 4 |
| Jun 4, 2026 | COEChief Executive Officer | Open-market purchaseCode P · indirect | 15,420 | $23.59 | $364K@ $23.59 | 26,801,940 | Form 4 |
| Jun 3, 2026 | COEChief Executive Officer | Open-market purchaseCode P · indirect | 8,880 | $24.61 | $219K@ $24.61 | 26,786,520 | Form 4 |
| Jun 2, 2026 | COEChief Executive Officer | Open-market purchaseCode P · indirect | 56,700 | $25.23 | $1.4M@ $25.23 | 26,777,640 | Form 4 |
| Jun 1, 2026 | COEChief Executive Officer | Open-market purchaseCode P · indirect | 48,300 | $25.57 | $1.2M@ $25.57 | 26,720,940 | Form 4 |
| May 29, 2026 | COEChief Executive Officer | Open-market purchaseCode P · indirect | 21,240 | $25.74 | $547K@ $25.74 | 26,672,640 | Form 4 |
| May 28, 2026 | COEChief Executive Officer | Open-market purchaseCode P · indirect | 25,380 | $26.19 | $665K@ $26.19 | 26,651,400 | Form 4 |
| May 27, 2026 | COEChief Executive Officer | Open-market purchaseCode P · indirect | 45,840 | $26.39 | $1.2M@ $26.39 | 26,626,020 | Form 4 |
| May 26, 2026 | COEChief Executive Officer | Open-market purchaseCode P · indirect | 37,500 | $26.28 | $986K@ $26.28 | 26,580,180 | Form 4 |
| May 22, 2026 | COEChief Executive Officer | Open-market purchaseCode P · indirect | 74,280 | $26.76 | $2.0M@ $26.76 | 26,542,680 | Form 4 |
| May 21, 2026 | COEChief Executive Officer | Open-market purchaseCode P · indirect | 28,560 | $26.97 | $770K@ $26.97 | 26,468,400 | Form 4 |
| May 20, 2026 | COEChief Executive Officer | Open-market purchaseCode P · indirect | 45,600 | $27.13 | $1.2M@ $27.13 | 26,439,840 | Form 4 |
| May 19, 2026 | COEChief Executive Officer | Open-market purchaseCode P · indirect | 11,340 | $26.87 | $305K@ $26.87 | 26,394,240 | Form 4 |
| May 18, 2026 | COEChief Executive Officer | Open-market purchaseCode P · indirect | 22,440 | $28.00 | $628K@ $28.00 | 26,382,900 | Form 4 |
| May 18, 2026 | COEChief Executive Officer | Option exerciseCode M · indirect | 137,500 | — | — | 41,976,300 | Form 4 |
| May 15, 2026 | COEChief Executive Officer | Open-market purchaseCode P · indirect | 47,280 | $26.34 | $1.2M@ $26.34 | 26,360,460 | Form 4 |
| May 14, 2026 | COEChief Executive Officer | Open-market purchaseCode P · indirect | 30,000 | $25.22 | $757K@ $25.22 | 26,313,180 | Form 4 |
| May 13, 2026 | COEChief Executive Officer | Open-market purchaseCode P · indirect | 19,620 | $25.32 | $497K@ $25.32 | 26,283,180 | Form 4 |
| May 12, 2026 | COEChief Executive Officer | Open-market purchaseCode P · indirect | 28,560 | $25.50 | $728K@ $25.50 | 26,263,560 | Form 4 |
| May 11, 2026 | COEChief Executive Officer | Open-market purchaseCode P · indirect | 6,000 | $26.42 | $159K@ $26.42 | 26,235,000 | Form 4 |
| May 8, 2026 | COEChief Executive Officer | Open-market purchaseCode P · indirect | 73,080 | $23.49 | $1.7M@ $23.49 | 26,229,000 | Form 4 |
| May 7, 2026 | COEChief Executive Officer | Open-market purchaseCode P · indirect | 24,180 | $25.01 | $605K@ $25.01 | 26,155,920 | Form 4 |
| May 6, 2026 | COEChief Executive Officer | Open-market purchaseCode P · indirect | 22,140 | $27.16 | $601K@ $27.16 | 26,131,740 | Form 4 |
| May 5, 2026 | COEChief Executive Officer | Open-market purchaseCode P · indirect | 11,580 | $28.06 | $325K@ $28.06 | 26,109,600 | Form 4 |
| May 4, 2026 | COEChief Executive Officer | Open-market purchaseCode P · indirect | 83,580 | $28.79 | $2.4M@ $28.79 | 26,098,020 | Form 4 |
| May 1, 2026 | COEChief Executive Officer | Open-market purchaseCode P · indirect | 52,560 | $29.05 | $1.5M@ $29.05 | 26,014,440 | Form 4 |
| Apr 30, 2026 | COEChief Executive Officer | Open-market purchaseCode P · indirect | 24,180 | $28.36 | $686K@ $28.36 | 25,961,880 | Form 4 |
| Apr 29, 2026 | COEChief Executive Officer | Open-market purchaseCode P · indirect | 9,300 | $27.87 | $259K@ $27.87 | 25,937,700 | Form 4 |
| Apr 28, 2026 | COEChief Executive Officer | Open-market purchaseCode P · indirect | 64,500 | $26.99 | $1.7M@ $26.99 | 25,928,400 | Form 4 |
| Apr 27, 2026 | COEChief Executive Officer | Open-market purchaseCode P · indirect | 161,280 | $26.30 | $4.2M@ $26.30 | 25,863,900 | Form 4 |
| Apr 24, 2026 | COEChief Executive Officer | Open-market purchaseCode P · indirect | 39,720 | $26.07 | $1.0M@ $26.07 | 25,702,620 | Form 4 |
| Apr 23, 2026 | COEChief Executive Officer | Open-market purchaseCode P · indirect | 73,740 | $25.71 | $1.9M@ $25.71 | 25,662,900 | Form 4 |
| Apr 22, 2026 | COEChief Executive Officer | Open-market purchaseCode P · indirect | 12,000 | $23.90 | $287K@ $23.90 | 25,589,160 | Form 4 |
| Apr 21, 2026 | COEChief Executive Officer | Open-market purchaseCode P · indirect | 39,180 | $24.37 | $955K@ $24.37 | 25,577,160 | Form 4 |
| Apr 20, 2026 | COEChief Executive Officer | Open-market purchaseCode P · indirect | 21,480 | $23.59 | $507K@ $23.59 | 25,537,980 | Form 4 |
| Apr 17, 2026 | COEChief Executive Officer | Open-market purchaseCode P · indirect | 24,060 | $25.51 | $614K@ $25.51 | 25,516,500 | Form 4 |
| Apr 16, 2026 | COEChief Executive Officer | Open-market purchaseCode P · indirect | 60,420 | $25.79 | $1.6M@ $25.79 | 25,492,440 | Form 4 |
| Apr 15, 2026 | COEChief Executive Officer | Open-market purchaseCode P · indirect | 166,560 | $25.69 | $4.3M@ $25.69 | 25,432,020 | Form 4 |
| Apr 14, 2026 | COEChief Executive Officer | Open-market purchaseCode P · indirect | 61,200 | $24.36 | $1.5M@ $24.36 | 25,265,460 | Form 4 |
| Apr 13, 2026 | COEChief Executive Officer | Open-market purchaseCode P · indirect | 72,720 | $22.22 | $1.6M@ $22.22 | 25,204,260 | Form 4 |
| Apr 10, 2026 | COEChief Executive Officer | Open-market purchaseCode P · indirect | 151,620 | $21.07 | $3.2M@ $21.07 | 35,579,760 | Form 4 |
| Apr 9, 2026 | COEChief Executive Officer | Open-market purchaseCode P · indirect | 159,420 | $21.70 | $3.5M@ $21.70 | 25,131,540 | Form 4 |
| Apr 8, 2026 | COEChief Executive Officer | Open-market purchaseCode P · indirect | 39,720 | $21.70 | $862K@ $21.70 | 24,972,120 | Form 4 |
| Apr 7, 2026 | COEChief Executive Officer | Open-market purchaseCode P · indirect | 20,280 | $21.28 | $432K@ $21.28 | 24,932,400 | Form 4 |
| Apr 6, 2026 | COEChief Executive Officer | Open-market purchaseCode P · indirect | 117,660 | $22.96 | $2.7M@ $22.96 | 24,912,120 | Form 4 |
| Apr 2, 2026 | COEChief Executive Officer | Open-market purchaseCode P · indirect | 170,520 | $22.21 | $3.8M@ $22.21 | 24,794,460 | Form 4 |
| Apr 1, 2026 | COEChief Executive Officer | Open-market purchaseCode P · indirect | 309,660 | $21.48 | $6.7M@ $21.48 | 24,623,940 | Form 4 |
| Mar 31, 2026 | COEChief Executive Officer | Open-market purchaseCode P · indirect | 195,060 | $19.09 | $3.7M@ $19.09 | 24,314,280 | Form 4 |
| Mar 30, 2026 | COEChief Executive Officer | Open-market purchaseCode P · indirect | 337,740 | $18.50 | $6.2M@ $18.50 | 24,119,220 | Form 4 |
| Mar 30, 2026 | COEChief Executive Officer | Option exerciseCode M · indirect | 275,000 | — | — | 41,838,800 | Form 4 |
| Mar 27, 2026 | COEChief Executive Officer | Open-market purchaseCode P · indirect | 301,620 | $19.37 | $5.8M@ $19.37 | 23,781,480 | Form 4 |
| Mar 26, 2026 | COEChief Executive Officer | Open-market purchaseCode P · indirect | 88,560 | $18.35 | $1.6M@ $18.35 | 23,479,860 | Form 4 |
How this page is built
Every row comes from a Form 4 filed with the SEC, which officers, directors and holders of more than 10% of a company’s stock must file within two business days of a trade. Transactions are grouped by the reporting owner’s name as filed (spacing, capitals and punctuation ignored); two different people filing under an identical name would appear together, and one person filing under two spellings appears on two pages.
Open-market totals count code P purchases and code S sales over the last 24 months. The same trade reported on more than one filing is counted once; when another owner (for example a fund and its general partner) reports the identical trade, they are listed beside it. Holdings are the shares owned after the latest purchase, sale, gift or tax-withholding line, shown separately for direct and indirect ownership; an indirect figure is one holding line, not a total across every trust or entity.
This page describes what was filed with the SEC; it is not investment advice or a recommendation to buy or sell any security.