Nithrakashyap Arvind
Director · Officer · RBRK
As of 2026-09-16, Nithrakashyap Arvind has 195 Form 4 transactions on record across 1 company — 98 in the trailing 12 months.
Everything this person has disclosed to the SEC on Form 4 — across every company they file for — reconstructed from the public record. A filing history, not a tip sheet.
Pattern in the record: open-market sales filed in September in multiple years since 2025 — a recurring calendar cadence, more consistent with scheduled activity than a one-off decision.
Reconstructed holdings
- Direct $1.1B
- Indirect $0
| RBRK | direct | 10,028,250 sh | $1.1B |
Reconstructed from this person's own Form 4 filings — the total each filing reported owning afterward, priced at the close on the as-of date shown. A filed position can lag the real one.
Direct and indirect holdings (e.g. through a trust or fund) are tagged separately, as filed.
Trades by company
Filing ledger
| Date | Company | Action | Shares @ price | Value | Ownership Δ | Owned after | Filing |
|---|---|---|---|---|---|---|---|
| 2026-09-10 | RBRK | Sale | 4,844 @ $89.73 | $435K | −1.6% of holding | 300,289 | Form 4 |
| 2026-09-10 | RBRK | Sale | 4,675 @ $90.88 | $425K | −1.6% of holding | 295,614 | Form 4 |
| 2026-09-10 | RBRK | Sale | 2,321 @ $91.67 | $213K | −0.8% of holding | 293,293 | Form 4 |
| 2026-09-10 | RBRK | Sale | 611 @ $89.12 | $54K | −0.2% of holding | 305,133 | Form 4 |
| 2026-09-10 | RBRK | Sale | 369 @ $87.55 | $32K | −0.1% of holding | 305,744 | Form 4 |
| 2026-09-09 | RBRK | Sale | 5,297 @ $90.41 | $479K | −1.7% of holding | 297,573 | Form 4 |
| 2026-09-09 | RBRK | Sale | 3,237 @ $91.16 | $295K | −1.1% of holding | 294,336 | Form 4 |
| 2026-09-09 | RBRK | Sale | 3,243 @ $89.33 | $290K | −1.1% of holding | 302,870 | Form 4 |
| 2026-09-09 | RBRK | Sale | 1,013 @ $92.08 | $93K | −0.3% of holding | 293,323 | Form 4 |
| 2026-09-09 | RBRK | Sale | 30 @ $92.87 | $3K | −0.0% of holding | 293,293 | Form 4 |
| 2026-09-08 | RBRK | Sale | 7,836 @ $91.47 | $717K | −2.6% of holding | 295,510 | Form 4 |
| 2026-09-08 | RBRK | Sale | 2,767 @ $90.43 | $250K | −0.9% of holding | 303,346 | Form 4 |
| 2026-09-08 | RBRK | Sale | 2,217 @ $91.95 | $204K | −0.8% of holding | 293,293 | Form 4 |
| 2026-08-05 | RBRK | Sale | 8,177 @ $84.10 | $688K | −2.7% of holding | 293,814 | Form 4 |
| 2026-08-05 | RBRK | Sale | 2,780 @ $83.17 | $231K | −0.9% of holding | 301,991 | Form 4 |
| 2026-08-05 | RBRK | Sale | 1,342 @ $82.08 | $110K | −0.4% of holding | 304,771 | Form 4 |
| 2026-08-05 | RBRK | Sale | 521 @ $84.61 | $44K | −0.2% of holding | 293,293 | Form 4 |
| 2026-08-04 | RBRK | Sale | 4,557 @ $80.94 | $369K | −1.5% of holding | 293,293 | Form 4 |
| 2026-08-04 | RBRK | Sale | 3,767 @ $79.81 | $301K | −1.2% of holding | 297,850 | Form 4 |
| 2026-08-04 | RBRK | Sale | 2,981 @ $79.11 | $236K | −1.0% of holding | 301,617 | Form 4 |
| 2026-08-04 | RBRK | Sale | 1,303 @ $77.99 | $102K | −0.4% of holding | 304,598 | Form 4 |
| 2026-08-04 | RBRK | Sale | 212 @ $76.77 | $16K | −0.1% of holding | 305,901 | Form 4 |
| 2026-08-03 | RBRK | Sale | 7,642 @ $73.72 | $563K | −2.5% of holding | 298,471 | Form 4 |
| 2026-08-03 | RBRK | Sale | 5,178 @ $74.52 | $386K | −1.7% of holding | 293,293 | Form 4 |
| 2026-07-08 | RBRK | Sale | 6,728 @ $84.02 | $565K | −2.1% of holding | 309,703 | Form 4 |
| 2026-07-08 | RBRK | Sale | 4,233 @ $84.87 | $359K | −1.4% of holding | 305,470 | Form 4 |
| 2026-07-08 | RBRK | Sale | 1,446 @ $85.67 | $124K | −0.5% of holding | 304,024 | Form 4 |
| 2026-07-08 | RBRK | Sale | 413 @ $86.81 | $36K | −0.1% of holding | 303,611 | Form 4 |
| 2026-07-07 | RBRK | Sale | 4,957 @ $87.32 | $433K | −1.6% of holding | 308,904 | Form 4 |
| 2026-07-07 | RBRK | Sale | 3,978 @ $88.33 | $351K | −1.3% of holding | 304,926 | Form 4 |
| 2026-07-07 | RBRK | Sale | 1,821 @ $86.45 | $157K | −0.6% of holding | 313,861 | Form 4 |
| 2026-07-07 | RBRK | Sale | 1,315 @ $89.13 | $117K | −0.4% of holding | 303,611 | Form 4 |
| 2026-07-07 | RBRK | Sale | 749 @ $85.44 | $64K | −0.2% of holding | 315,682 | Form 4 |
| 2026-07-06 | RBRK | Sale | 6,754 @ $87.66 | $592K | −2.1% of holding | 308,001 | Form 4 |
| 2026-07-06 | RBRK | Sale | 4,129 @ $88.69 | $366K | −1.3% of holding | 303,872 | Form 4 |
| 2026-07-06 | RBRK | Sale | 665 @ $86.91 | $58K | −0.2% of holding | 314,755 | Form 4 |
| 2026-07-06 | RBRK | Sale | 562 @ $85.56 | $48K | −0.2% of holding | 315,420 | Form 4 |
| 2026-07-06 | RBRK | Sale | 261 @ $89.28 | $23K | −0.1% of holding | 303,611 | Form 4 |
| 2026-07-06 | RBRK | Sale | 257 @ $85.04 | $22K | −0.1% of holding | 315,982 | Form 4 |
| 2026-07-06 | RBRK | Sale | 192 @ $83.37 | $16K | −0.1% of holding | 316,239 | Form 4 |
| 2026-06-03 | RBRK | Sale | 5,655 @ $79.56 | $450K | −1.8% of holding | 314,240 | Form 4 |
| 2026-06-03 | RBRK | Sale | 4,246 @ $78.96 | $335K | −1.3% of holding | 319,895 | Form 4 |
| 2026-06-03 | RBRK | Sale | 1,700 @ $77.68 | $132K | −0.5% of holding | 324,141 | Form 4 |
| 2026-06-03 | RBRK | Sale | 1,027 @ $76.66 | $79K | −0.3% of holding | 325,841 | Form 4 |
| 2026-06-03 | RBRK | Sale | 192 @ $80.45 | $15K | −0.1% of holding | 314,048 | Form 4 |
| 2026-06-02 | RBRK | Sale | 9,986 @ $82.23 | $821K | −3.1% of holding | 315,049 | Form 4 |
| 2026-06-02 | RBRK | Sale | 1,833 @ $81.31 | $149K | −0.6% of holding | 325,035 | Form 4 |
| 2026-06-02 | RBRK | Sale | 831 @ $82.88 | $69K | −0.3% of holding | 314,218 | Form 4 |
| 2026-06-02 | RBRK | Sale | 170 @ $84.06 | $14K | −0.1% of holding | 314,048 | Form 4 |
| 2026-06-01 | RBRK | Sale | 72,687 @ $84.75 | $6.2M | −16.7% of holding | 361,940 | Form 4 |
| 2026-06-01 | RBRK | Sale | 47,630 @ $85.90 | $4.1M | −13.2% of holding | 314,310 | Form 4 |
| 2026-06-01 | RBRK | Sale | 28,329 @ $84.14 | $2.4M | −6.1% of holding | 434,627 | Form 4 |
| 2026-06-01 | RBRK | Sale | 22,206 @ $82.72 | $1.8M | −4.6% of holding | 462,956 | Form 4 |
| 2026-06-01 | RBRK | Sale | 22,240 @ $82.11 | $1.8M | −4.4% of holding | 485,162 | Form 4 |
| 2026-06-01 | RBRK | Sale | 4,155 @ $79.68 | $331K | −0.8% of holding | 509,340 | Form 4 |
| 2026-06-01 | RBRK | Sale | 1,938 @ $80.99 | $157K | −0.4% of holding | 507,402 | Form 4 |
| 2026-06-01 | RBRK | Sale | 262 @ $86.40 | $23K | −0.1% of holding | 314,048 | Form 4 |
| 2026-03-24 | RBRK | Sale | 28,967 @ $48.20 | $1.4M | −7.7% of holding | 348,668 | Form 4 |
| 2026-01-15 | RBRK | Sale | 4,648 @ $70.40 | $327K | −1.4% of holding | 337,010 | Form 4 |
| 2026-01-14 | RBRK | Sale | 1,045 @ $70.05 | $73K | −0.3% of holding | 341,658 | Form 4 |
| 2025-12-17 | RBRK | Sale | 31,450 @ $76.19 | $2.4M | −8.4% of holding | 342,703 | Form 4 |
| 2025-09-16 | RBRK | Sale | 40,170 @ $74.21 | $3.0M | −10.7% of holding | 333,528 | Form 4 |
| 2025-06-05 | RBRK | Sale | 8,661 @ $98.44 | $853K | −26.7% of holding | 23,816 | Form 4 |
| 2025-06-05 | RBRK | Sale | 8,306 @ $101.29 | $841K | −100.0% of holding | 0 | Form 4 |
| 2025-06-05 | RBRK | Sale | 7,822 @ $100.39 | $785K | −48.5% of holding | 8,306 | Form 4 |
| 2025-06-05 | RBRK | Sale | 7,688 @ $99.26 | $763K | −32.3% of holding | 16,128 | Form 4 |
| 2025-06-04 | RBRK | Sale | 26,740 @ $98.28 | $2.6M | −82.3% of holding | 5,744 | Form 4 |
| 2025-06-04 | RBRK | Sale | 5,744 @ $98.84 | $568K | −100.0% of holding | 0 | Form 4 |
| 2025-06-03 | RBRK | Sale | 18,955 @ $98.55 | $1.9M | −58.4% of holding | 13,529 | Form 4 |
| 2025-06-03 | RBRK | Sale | 13,529 @ $99.28 | $1.3M | −100.0% of holding | 0 | Form 4 |
| 2025-05-07 | RBRK | Sale | 18,109 @ $75.50 | $1.4M | −41.9% of holding | 25,144 | Form 4 |
| 2025-05-07 | RBRK | Sale | 13,606 @ $74.74 | $1.0M | −23.9% of holding | 43,253 | Form 4 |
| 2025-05-07 | RBRK | Sale | 769 @ $76.15 | $59K | −3.1% of holding | 24,375 | Form 4 |
| 2025-05-06 | RBRK | Sale | 13,086 @ $73.98 | $968K | −18.5% of holding | 57,828 | Form 4 |
| 2025-05-06 | RBRK | Sale | 10,158 @ $72.91 | $741K | −12.5% of holding | 70,914 | Form 4 |
| 2025-05-06 | RBRK | Sale | 8,271 @ $72.04 | $596K | −9.3% of holding | 81,072 | Form 4 |
| 2025-05-06 | RBRK | Sale | 969 @ $74.47 | $72K | −1.7% of holding | 56,859 | Form 4 |
| 2025-05-05 | RBRK | Sale | 10,935 @ $74.52 | $815K | −9.5% of holding | 104,629 | Form 4 |
| 2025-05-05 | RBRK | Sale | 7,873 @ $76.36 | $601K | −8.1% of holding | 89,343 | Form 4 |
| 2025-05-05 | RBRK | Sale | 7,413 @ $75.56 | $560K | −7.1% of holding | 97,216 | Form 4 |
65 award / exercise / gift records — not counted as purchases
| Date | Company | Action | Shares | Owned after | Filing |
|---|---|---|---|---|---|
| 2026-09-10 | RBRK | Conversion | 12,820 | 10,028,250 | Form 4 |
| 2026-09-10 | RBRK | Conversion | 12,820 | 306,113 | Form 4 |
| 2026-09-09 | RBRK | Conversion | 12,820 | 10,041,070 | Form 4 |
| 2026-09-09 | RBRK | Conversion | 12,820 | 306,113 | Form 4 |
| 2026-09-08 | RBRK | Conversion | 12,820 | 10,053,890 | Form 4 |
| 2026-09-08 | RBRK | Conversion | 12,820 | 306,113 | Form 4 |
| 2026-08-05 | RBRK | Conversion | 12,820 | 10,066,710 | Form 4 |
| 2026-08-05 | RBRK | Conversion | 12,820 | 306,113 | Form 4 |
| 2026-08-04 | RBRK | Conversion | 12,820 | 306,113 | Form 4 |
| 2026-08-04 | RBRK | Conversion | 12,820 | 10,079,530 | Form 4 |
| 2026-08-03 | RBRK | Conversion | 2,502 | 10,092,350 | Form 4 |
| 2026-08-03 | RBRK | Conversion | 2,502 | 306,113 | Form 4 |
| 2026-07-08 | RBRK | Conversion | 12,820 | 10,094,852 | Form 4 |
| 2026-07-08 | RBRK | Conversion | 12,820 | 316,431 | Form 4 |
| 2026-07-07 | RBRK | Conversion | 12,820 | 316,431 | Form 4 |
| 2026-07-07 | RBRK | Conversion | 12,820 | 10,107,672 | Form 4 |
| 2026-07-06 | RBRK | Conversion | 12,820 | 10,120,492 | Form 4 |
| 2026-07-06 | RBRK | Conversion | 12,820 | 316,431 | Form 4 |
| 2026-06-16 | RBRK | Withheld for tax | 10,437 | 303,611 | Form 4 |
| 2026-06-03 | RBRK | Conversion | 12,820 | 10,133,312 | Form 4 |
| 2026-06-03 | RBRK | Conversion | 12,820 | 326,868 | Form 4 |
| 2026-06-02 | RBRK | Conversion | 12,820 | 10,146,132 | Form 4 |
| 2026-06-02 | RBRK | Conversion | 12,820 | 326,868 | Form 4 |
| 2026-06-01 | RBRK | Conversion | 71,993 | 10,158,952 | Form 4 |
| 2026-06-01 | RBRK | Conversion | 71,993 | 513,495 | Form 4 |
| 2026-04-14 | RBRK | Award / grant | 92,834 | 441,502 | Form 4 |
| 2026-03-24 | RBRK | Option exercise | 40,625 | 0 | Form 4 |
| 2026-03-24 | RBRK | Conversion | 40,625 | 10,230,945 | Form 4 |
| 2026-03-24 | RBRK | Option exercise | 40,625 | 10,271,570 | Form 4 |
| 2026-03-24 | RBRK | Conversion | 40,625 | 377,635 | Form 4 |
| 2025-12-23 | RBRK | Conversion | 100,000 | 10,230,945 | Form 4 |
| 2025-12-23 | RBRK | Gift | 100,000 | 342,703 | Form 4 |
| 2025-12-23 | RBRK | Conversion | 100,000 | 442,703 | Form 4 |
| 2025-12-16 | RBRK | Option exercise | 40,625 | 10,371,570 | Form 4 |
| 2025-12-16 | RBRK | Conversion | 40,625 | 374,153 | Form 4 |
| 2025-12-16 | RBRK | Option exercise | 40,625 | 40,625 | Form 4 |
| 2025-12-16 | RBRK | Conversion | 40,625 | 10,330,945 | Form 4 |
| 2025-09-16 | RBRK | Option exercise | 40,625 | 10,371,570 | Form 4 |
| 2025-09-16 | RBRK | Option exercise | 40,625 | 81,250 | Form 4 |
| 2025-09-16 | RBRK | Conversion | 40,625 | 10,330,945 | Form 4 |
Source: SEC Form 4 filings. Each row links to its original filing.
Research tool, not investment advice — historical frequencies, not recommendations. A product of Marovel Technologies LLC. Full terms.