1stdibs.Com, Inc.
US ˙ NasdaqGM ˙ US3205511047

SecurityDIBS / 1stdibs.Com, Inc.
InsiderDavid S Rosenblatt
This page shows the track record and history of ROSENBLATT DAVID S insider trades in 1stdibs.Com, Inc.. The SEC defines Insiders as officers, directors, or significant investors (greater than 10% ownership) in a company. It is illegal for insiders to make trades in their companies based on material, non-public information ("MNPI"). This does not mean it is illegal for them to make any trades in their own companies. However, they must report all trades to the SEC via a Form 4.
Insider Purchases - Short Term Profit Analysis

In this section, we analyze the profitability of every unplanned, open-market insider purchase made by David S Rosenblatt in DIBS / 1stdibs.Com, Inc.. This analysis helps to understand if the insider consistently generates abnormal returns, and is worth following. This analysis is for one-year following each trade, and the results are theoretical.

The following table shows the most recent open market purchases that were not part of an automatic trading plan.

Trade Date Reported
Shares		 Reported
Price		 Adjusted
Shares		 Adjusted
Price		 Cost Basis Days to
Max		 Price at
Max		 Max
Profit ($)		 Max Return (%)
2021-11-19 22,500 13.3743 22,500 13.3743 300,922 5 13.85 10,704 3.56
2021-08-18 6,927 15.8350 6,927 15.8350 109,689
2021-08-17 43,073 14.9292 43,073 14.9292 643,045
2021-08-17 5,803 14.3800 5,803 14.3800 83,447
2021-08-16 44,197 14.8900 44,197 14.8900 658,093

Adjusted Price is the split-adjusted price. Adjusted Shares is the split-adjusted shares.

DIBS / 1stdibs.Com, Inc. Insider Trades
Insider Sales - Short Term Loss Analysis

In this section, we analyze the short-term loss avoidance of every unplanned, open-market insider sale made by David S Rosenblatt in DIBS / 1stdibs.Com, Inc.. A consistent pattern of loss avoidance may suggest that future sale transactions may predict declines in price. This analysis is for one-year following each trade, and the results are theoretical.

The following table shows the most recent open market purchases that were not part of an automatic trading plan.

Trade Date Reported
Shares		 Reported
Price		 Adjusted
Shares		 Adjusted
Price		 Cost Basis Days to
Min		 Price at
Min		 Max Loss
Avoided ($)		 Max Loss
Avoided (%)
2025-09-08 73,207 2.8000 73,207 2.8000 204,980 2 2.7500 -3,660 -1.79
2023-09-18 2,541 3.8230 2,541 3.8230 9,714
2023-09-15 2,559 3.9130 2,559 3.9130 10,013
2023-09-14 2,547 4.0600 2,547 4.0600 10,341
2023-09-13 2,494 4.1870 2,494 4.1870 10,442
2023-09-12 2,533 4.1230 2,533 4.1230 10,444
2023-09-11 2,532 4.2535 2,532 4.2535 10,770
2023-06-09 14,175 3.8804 14,175 3.8804 55,005

Adjusted Price is the split-adjusted price. Adjusted Shares is the split-adjusted shares.

DIBS / 1stdibs.Com, Inc. Insider Trades
Insider Transaction History
File
Date		 Trade
Date		 Form Insider Ticker Security Title Code 10b5-1 Direct Exercise
Price		 Unit
Price		 Units
Changed		 Value
Changed (1K)		 Remaining
Options		 Remaining
Shares
2025-09-10 2025-09-08 4 ROSENBLATT DAVID S DIBS Common Stock S - Sale D 2.8000 -73,207 -205 1,845,898
2025-09-10 2025-09-08 4 ROSENBLATT DAVID S DIBS Common Stock M - Exercise D 47,500 1,919,105
2025-09-10 2025-09-08 4 ROSENBLATT DAVID S DIBS Common Stock M - Exercise D 47,500 1,919,105
2025-09-10 2025-09-08 4 ROSENBLATT DAVID S DIBS Common Stock M - Exercise D 37,500 1,824,105
2025-06-11 2025-06-09 4 ROSENBLATT DAVID S DIBS Common Stock F - Taxes D 2.9500 -72,699 -214 1,786,605
2025-06-11 2025-06-09 4 ROSENBLATT DAVID S DIBS Common Stock M - Exercise D 47,500 1,859,304
2025-06-11 2025-06-09 4 ROSENBLATT DAVID S DIBS Common Stock M - Exercise D 47,500 1,859,304
2025-06-11 2025-06-09 4 ROSENBLATT DAVID S DIBS Common Stock M - Exercise D 37,500 1,764,304
2025-03-12 2025-03-10 4 ROSENBLATT DAVID S DIBS Common Stock F - Taxes D 3.3600 -34,213 -115 1,726,804
2025-03-12 2025-03-10 4 ROSENBLATT DAVID S DIBS Common Stock M - Exercise D 47,500 1,761,017
2025-03-12 2025-03-10 4 ROSENBLATT DAVID S DIBS Common Stock M - Exercise D 37,500 1,713,517
2024-12-11 2024-12-09 4 ROSENBLATT DAVID S DIBS Common Stock F - Taxes D 3.7800 -46,963 -178 1,676,017
2024-12-11 2024-12-09 4 ROSENBLATT DAVID S DIBS Common Stock M - Exercise D 47,500 1,722,980
2024-12-11 2024-12-09 4 ROSENBLATT DAVID S DIBS Common Stock M - Exercise D 37,500 1,675,480
2024-09-11 2024-09-09 4 ROSENBLATT DAVID S DIBS Common Stock F - Taxes D 4.8100 -46,963 -226 1,637,980
2024-09-11 2024-09-09 4 ROSENBLATT DAVID S DIBS Common Stock M - Exercise D 47,500 1,684,943
2024-09-11 2024-09-09 4 ROSENBLATT DAVID S DIBS Common Stock M - Exercise D 37,500 1,637,443
2024-06-12 2024-06-10 4 ROSENBLATT DAVID S DIBS Common Stock F - Taxes D 5.5000 -46,963 -258 1,599,943
2024-06-12 2024-06-10 4 ROSENBLATT DAVID S DIBS Common Stock M - Exercise D 85,000 1,646,906
2024-03-12 2024-03-08 4 ROSENBLATT DAVID S DIBS Common Stock F - Taxes D 5.2500 -15,094 -79 1,561,906
2024-03-12 2024-03-08 4 ROSENBLATT DAVID S DIBS Common Stock M - Exercise D 37,500 1,577,000
2023-12-12 2023-12-08 4 ROSENBLATT DAVID S DIBS Common Stock F - Taxes D 4.7400 -15,094 -72 1,539,500
2023-12-12 2023-12-08 4 ROSENBLATT DAVID S DIBS Common Stock M - Exercise D 37,500 1,554,594
2023-09-19 2023-09-18 4 ROSENBLATT DAVID S DIBS Common Stock S - Sale D 3.8230 -2,541 -10 1,517,094
2023-09-19 2023-09-15 4 ROSENBLATT DAVID S DIBS Common Stock S - Sale D 3.9130 -2,559 -10 1,519,635
2023-09-15 2023-09-14 4 ROSENBLATT DAVID S DIBS Common Stock S - Sale D 4.0600 -2,547 -10 1,522,194
2023-09-15 2023-09-13 4 ROSENBLATT DAVID S DIBS Common Stock S - Sale D 4.1870 -2,494 -10 1,524,741
2023-09-13 2023-09-12 4 ROSENBLATT DAVID S DIBS Common Stock S - Sale D 4.1230 -2,533 -10 1,527,235
2023-09-13 2023-09-11 4 ROSENBLATT DAVID S DIBS Common Stock S - Sale D 4.2535 -2,532 -11 1,529,768
2023-09-12 2023-09-08 4 ROSENBLATT DAVID S DIBS Common Stock M - Exercise D 37,500 1,532,300
2023-06-13 2023-06-09 4 ROSENBLATT DAVID S DIBS Common Stock S - Sale D 3.8804 -14,175 -55 1,494,800
2023-06-12 2023-06-08 4 ROSENBLATT DAVID S DIBS Common Stock M - Exercise D 37,500 1,508,975
2022-03-17 2022-03-15 4 ROSENBLATT DAVID S DIBS Employee Stock Option (right to buy) A - Award D 7.71 860,000 860,000
2021-11-23 2021-11-19 4 ROSENBLATT DAVID S By 2012 Laura T. Rosenblatt Family Trust dtd 12/4/2012 DIBS Common Stock P - Purchase I 13.3743 22,500 301 22,500
2021-08-18 2021-08-18 4 ROSENBLATT DAVID S DIBS Common Stock P - Purchase D 15.8350 6,927 110 1,471,475
2021-08-18 2021-08-17 4 ROSENBLATT DAVID S By 2012 David Rosenblatt Family Trust dtd 11/30/2012 DIBS Common Stock P - Purchase I 14.3800 5,803 83 665,302
2021-08-18 2021-08-17 4 ROSENBLATT DAVID S DIBS Common Stock P - Purchase D 14.9292 43,073 643 1,464,548
2021-08-18 2021-08-16 4 ROSENBLATT DAVID S By 2012 David Rosenblatt Family Trust dtd 11/30/2012 DIBS Common Stock P - Purchase I 14.8900 44,197 658 659,499
2021-06-09 3 ROSENBLATT DAVID S DIBS Common Stock D 1,421,475
2021-06-09 3 ROSENBLATT DAVID S By 2012 David Rosenblatt Family Trust dtd 11/30/2012 DIBS Common Stock I 615,302
P
Åbent marked eller privat køb af ikke-afledte eller afledte værdipapirer
S
Åbent marked eller privat salg af ikke-afledte eller afledte værdipapirer
A
Tildeling, tildeling eller anden erhvervelse af værdipapirer fra virksomheden (såsom en option)
C
Konvertering af derivat
D
Salg eller overførsel af værdipapirer tilbage til virksomheden
F
Betaling af udnyttelseskurs eller skatteforpligtelse ved brug af en del af værdipapirer modtaget fra selskabet
G
Gave af værdipapirer af eller til insideren
K
Aktieswaps og lignende sikringstransaktioner
M
Udnyttelse eller konvertering af afledt værdipapir modtaget fra virksomheden (såsom en option)
V
En transaktion rapporteret frivilligt på formular 4
J
Andet (ledsaget af en fodnote, der beskriver transaktionen)