Lipson Matthew A.
CIK 0001727936 Name as filed on the most recent filing
Filed as Lipson Matthew A. (7)
51 transaction lines · from 7 filings · filed 2018-01-18 to 2020-10-05 The span is the filing dates this catalog holds, not the entity's full filing history. Absence here is not evidence of absence at the SEC.
A line appears here when the filing that carries it names this CIK as a reporting owner, not only when the parser picked this CIK as the line's primary owner. That is why a joint filing appears on both owners' pages rather than vanishing from the second one. The catalog never merges two CIKs into one person and never splits one CIK into two: identity here is the SEC's own identifier and nothing else.
Issuers this insider has filed against
Ordered by last-seen filing date, newest first. Roles are as filed on the Form 4 and are not normalised.
This container could not be filled from the store. It is showing nothing because a read failed, not because no insider filed: those are different facts and this catalog will not let one stand in for the other. The last ingest the store recorded was 2026-08-20 05:22 UTC.
No issuer is recorded
The catalog holds no filing linking this CIK to an issuer.
Transactions
Every stored Form 4 line naming this reporting owner, newest transaction date first. Each row links to the filing it came from.
51 transactions · Newest transaction date first, id breaking the tie.
This container could not be filled from the store. It is showing nothing because a read failed, not because no insider filed: those are different facts and this catalog will not let one stand in for the other. The last ingest the store recorded was 2026-08-20 05:22 UTC.
| Direction | Date | Issuer | Code | Shares | Price | Value USD | Filing |
|---|---|---|---|---|---|---|---|
| 2020-10-01 |
Stamps.Com Inc STMP |
S, Open-market sale | 18,482 disposed | 252.76 | 4,671,445.63 | Form 4, filing 0001082923-20-000134 | |
| 2020-10-01 |
Stamps.Com Inc STMP |
S, Open-market sale | 11,965 disposed | 251.60 | 3,010,394.00 | Form 4, filing 0001082923-20-000134 | |
| 2020-10-01 |
Stamps.Com Inc STMP |
S, Open-market sale | 8,954 disposed | 253.44 | 2,269,301.76 | Form 4, filing 0001082923-20-000134 | |
| 2020-10-01 |
Stamps.Com Inc STMP |
S, Open-market sale | 7,872 disposed | 250.71 | 1,973,567.08 | Form 4, filing 0001082923-20-000134 | |
| 2020-10-01 |
Stamps.Com Inc STMP |
S, Open-market sale | 4,036 disposed | 254.43 | 1,026,887.55 | Form 4, filing 0001082923-20-000134 | |
| 2020-10-01 |
Stamps.Com Inc STMP |
S, Open-market sale | 475 disposed | 255.31 | 121,270.73 | Form 4, filing 0001082923-20-000134 | |
| 2020-09-16 |
Stamps.Com Inc STMP |
S, Open-market sale | 2,878 disposed | 215.26 | 619,527.20 | Form 4, filing 0001082923-20-000127 | |
| 2020-09-16 |
Stamps.Com Inc STMP |
S, Open-market sale | 2,877 disposed | 218.57 | 628,814.09 | Form 4, filing 0001082923-20-000127 | |
| 2020-09-16 |
Stamps.Com Inc STMP |
S, Open-market sale | 2,581 disposed | 219.71 | 567,075.12 | Form 4, filing 0001082923-20-000127 | |
| 2020-09-16 |
Stamps.Com Inc STMP |
S, Open-market sale | 2,543 disposed | 217.68 | 553,552.36 | Form 4, filing 0001082923-20-000127 | |
| 2020-09-16 |
Stamps.Com Inc STMP |
S, Open-market sale | 1,829 disposed | 216.44 | 395,870.41 | Form 4, filing 0001082923-20-000127 | |
| 2020-09-16 |
Stamps.Com Inc STMP |
S, Open-market sale | 897 disposed | 220.45 | 197,745.98 | Form 4, filing 0001082923-20-000127 | |
| 2020-09-16 |
Stamps.Com Inc STMP |
S, Open-market sale | 535 disposed | 223.23 | 119,427.03 | Form 4, filing 0001082923-20-000127 | |
| 2020-09-16 |
Stamps.Com Inc STMP |
S, Open-market sale | 523 disposed | 224.27 | 117,291.48 | Form 4, filing 0001082923-20-000127 | |
| 2020-09-16 |
Stamps.Com Inc STMP |
S, Open-market sale | 289 disposed | 226.91 | 65,576.64 | Form 4, filing 0001082923-20-000127 | |
| 2020-09-16 |
Stamps.Com Inc STMP |
S, Open-market sale | 175 disposed | 221.67 | 38,791.50 | Form 4, filing 0001082923-20-000127 | |
| 2020-09-16 |
Stamps.Com Inc STMP |
S, Open-market sale | 102 disposed | 224.87 | 22,936.90 | Form 4, filing 0001082923-20-000127 | |
| 2020-09-16 |
Stamps.Com Inc STMP |
S, Open-market sale | 58 disposed | 228.05 | 13,226.90 | Form 4, filing 0001082923-20-000127 | |
| 2020-09-15 |
Stamps.Com Inc STMP |
S, Open-market sale | 6,113 disposed | 215.12 | 1,315,038.34 | Form 4, filing 0001082923-20-000127 | |
| 2020-09-15 |
Stamps.Com Inc STMP |
S, Open-market sale | 1,600 disposed | 216.59 | 346,538.08 | Form 4, filing 0001082923-20-000127 | |
| 2020-09-15 |
Stamps.Com Inc STMP |
S, Open-market sale | 1,100 disposed | 217.74 | 239,508.50 | Form 4, filing 0001082923-20-000127 | |
| 2020-09-15 |
Stamps.Com Inc STMP |
S, Open-market sale | 700 disposed | 218.70 | 153,093.36 | Form 4, filing 0001082923-20-000127 | |
| 2020-09-15 |
Stamps.Com Inc STMP |
S, Open-market sale | 200 disposed | 219.67 | 43,934.00 | Form 4, filing 0001082923-20-000127 | |
| 2018-05-15 |
Stamps.Com Inc STMP |
S, Open-market sale | 1,281 disposed | 243.80 | 312,307.80 | Form 4, filing 0001082923-18-000047 | |
| 2018-04-16 |
Stamps.Com Inc STMP |
S, Open-market sale | 2,737 disposed | 202.87 | 555,252.45 | Form 4, filing 0001082923-18-000029 | |
| 2018-04-16 |
Stamps.Com Inc STMP |
S, Open-market sale | 1,600 disposed | 205.93 | 329,495.04 | Form 4, filing 0001082923-18-000029 | |
| 2018-04-16 |
Stamps.Com Inc STMP |
S, Open-market sale | 1,320 disposed | 201.76 | 266,325.05 | Form 4, filing 0001082923-18-000029 | |
| 2018-04-16 |
Stamps.Com Inc STMP |
S, Open-market sale | 1,317 disposed | 205.22 | 270,279.35 | Form 4, filing 0001082923-18-000029 | |
| 2018-04-16 |
Stamps.Com Inc STMP |
S, Open-market sale | 1,200 disposed | 206.92 | 248,310.00 | Form 4, filing 0001082923-18-000029 | |
| 2018-04-16 |
Stamps.Com Inc STMP |
S, Open-market sale | 500 disposed | 207.74 | 103,870.00 | Form 4, filing 0001082923-18-000029 | |
| 2018-04-16 |
Stamps.Com Inc STMP |
S, Open-market sale | 500 disposed | 203.86 | 101,930.00 | Form 4, filing 0001082923-18-000029 | |
| 2018-03-15 |
Stamps.Com Inc STMP |
S, Open-market sale | 3,434 disposed | 197.82 | 679,306.33 | Form 4, filing 0001082923-18-000019 | |
| 2018-03-15 |
Stamps.Com Inc STMP |
S, Open-market sale | 2,800 disposed | 199.93 | 559,795.04 | Form 4, filing 0001082923-18-000019 | |
| 2018-03-15 |
Stamps.Com Inc STMP |
S, Open-market sale | 2,014 disposed | 200.88 | 404,577.36 | Form 4, filing 0001082923-18-000019 | |
| 2018-03-15 |
Stamps.Com Inc STMP |
S, Open-market sale | 1,216 disposed | 198.74 | 241,673.56 | Form 4, filing 0001082923-18-000019 | |
| 2018-03-15 |
Stamps.Com Inc STMP |
S, Open-market sale | 536 disposed | 201.62 | 108,067.19 | Form 4, filing 0001082923-18-000019 | |
| 2018-02-15 |
Stamps.Com Inc STMP |
S, Open-market sale | 3,902 disposed | 187.39 | 731,193.05 | Form 4, filing 0001209191-18-011469 | |
| 2018-02-15 |
Stamps.Com Inc STMP |
S, Open-market sale | 1,963 disposed | 186.53 | 366,158.00 | Form 4, filing 0001209191-18-011469 | |
| 2018-02-15 |
Stamps.Com Inc STMP |
S, Open-market sale | 1,500 disposed | 189.53 | 284,299.95 | Form 4, filing 0001209191-18-011469 | |
| 2018-02-15 |
Stamps.Com Inc STMP |
S, Open-market sale | 1,500 disposed | 185.21 | 277,815.00 | Form 4, filing 0001209191-18-011469 | |
| 2018-02-15 |
Stamps.Com Inc STMP |
S, Open-market sale | 1,000 disposed | 188.58 | 188,575.00 | Form 4, filing 0001209191-18-011469 | |
| 2018-02-15 |
Stamps.Com Inc STMP |
S, Open-market sale | 135 disposed | 190.33 | 25,694.00 | Form 4, filing 0001209191-18-011469 | |
| 2018-01-16 |
Stamps.Com Inc STMP |
S, Open-market sale | 2,435 disposed | 190.24 | 463,237.57 | Form 4, filing 0001209191-18-004313 | |
| 2018-01-16 |
Stamps.Com Inc STMP |
S, Open-market sale | 2,302 disposed | 187.98 | 432,730.88 | Form 4, filing 0001209191-18-004313 | |
| 2018-01-16 |
Stamps.Com Inc STMP |
S, Open-market sale | 2,130 disposed | 187.13 | 398,586.90 | Form 4, filing 0001209191-18-004313 | |
| 2018-01-16 |
Stamps.Com Inc STMP |
S, Open-market sale | 1,359 disposed | 189.11 | 257,001.44 | Form 4, filing 0001209191-18-004313 | |
| 2018-01-16 |
Stamps.Com Inc STMP |
S, Open-market sale | 1,000 disposed | 192.52 | 192,515.00 | Form 4, filing 0001209191-18-004313 | |
| 2018-01-16 |
Stamps.Com Inc STMP |
S, Open-market sale | 1,000 disposed | 191.18 | 191,185.00 | Form 4, filing 0001209191-18-004313 | |
| 2018-01-16 |
Stamps.Com Inc STMP |
S, Open-market sale | 700 disposed | 185.70 | 129,990.00 | Form 4, filing 0001209191-18-004313 | |
| 2018-01-16 |
Stamps.Com Inc STMP |
S, Open-market sale | 500 disposed | 194.76 | 97,380.00 | Form 4, filing 0001209191-18-004313 |
This column is intentionally blank
No transaction line is stored for this reporting owner, though the catalog holds filings naming them. That happens when the filings report only holdings or only positions the store does not carry, and when a parse failed; each filing page states its own parse status.
- S, Open-market sale
- Open-market sale
Every value is as reported on the Form 4. A price the filing did not report is marked Not reported and no value is computed from it. Codes outside the open market, drawn in grey behind a dashed rule, are compensation and administrative machinery rather than a decision to trade at the prevailing price.
What this insider's stored lines contain
Exact counts over every stored line for this entity. This is a statement of composition, not a filter: the only filter this page offers is the open-market one above, because that is the only one an index serves today.
- Open-market purchase 0
- Open-market sale 51
- Option exercise 0
- Grant or award 0
- Tax withholding 0
- Disposition to the issuer 0
- In-the-money option exercise 0
How to cite this page
ebomi catalog. Lipson Matthew A., insider transactions. Retrieved 2026-08-21 from https://ebomi.com/insider/0001727936
Balogh, A. Insider trading. Scientific Data 10, 237 (2023) doi:10.1038/s41597-023-02147-6