Derrick Sung

CIK 1670118 · View on SEC EDGAR ↗

Insider

First SEC filing: Nov. 10, 2025 · Latest: Nov. 10, 2025

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Insider at

Insider transactions

0 buys (P) 0 sells (S) Net: $0 + 38 non-open-market transactions below last 12 months, based on the transactions shown below

Price change vs current quote, split-adjusted for corporate actions since the filing — not benchmarked, not annualized, not size-weighted

38 other filings hidden
Date Ticker Code Shares Price Value Owned after Δ own A/D vs now
Sept. 1, 2023 LUNG S 3,120 $10.00 $31,200 391,041 Direct -0.79% Disposed -76.7% (price as of 2026-08-20)
Sept. 1, 2023 LUNG S 701 $10.01 $7,017 394,161 Direct -0.18% Disposed -76.7% (price as of 2026-08-20)
Sept. 1, 2023 LUNG S 398 $10.01 $3,984 394,862 Direct -0.10% Disposed -76.7% (price as of 2026-08-20)
June 1, 2023 LUNG S 3,122 $11.49 $35,872 395,260 Direct -0.78% Disposed -79.7% (price as of 2026-08-20)
June 1, 2023 LUNG S 701 $11.49 $8,054 398,382 Direct -0.18% Disposed -79.7% (price as of 2026-08-20)
June 1, 2023 LUNG S 399 $11.48 $4,581 399,083 Direct -0.10% Disposed -79.7% (price as of 2026-08-20)
March 1, 2023 LUNG S 806 $11.03 $8,890 261,482 Direct -0.31% Disposed -78.9% (price as of 2026-08-20)
March 1, 2023 LUNG S 458 $11.03 $5,052 262,288 Direct -0.17% Disposed -78.9% (price as of 2026-08-20)
Dec. 1, 2022 LUNG S 387 $5.93 $2,295 263,428 Direct -0.15% Disposed -60.7% (price as of 2026-08-20)
Dec. 1, 2022 LUNG S 682 $5.93 $4,044 262,746 Direct -0.26% Disposed -60.7% (price as of 2026-08-20)
Sept. 1, 2022 LUNG S 690 $17.87 $12,330 253,815 Direct -0.27% Disposed -87.0% (price as of 2026-08-20)
Sept. 1, 2022 LUNG S 392 $17.87 $7,005 254,505 Direct -0.15% Disposed -87.0% (price as of 2026-08-20)
June 1, 2022 LUNG S 679 $18.05 $12,256 254,897 Direct -0.27% Disposed -87.1% (price as of 2026-08-20)
June 1, 2022 LUNG S 386 $18.05 $6,967 255,576 Direct -0.15% Disposed -87.1% (price as of 2026-08-20)
March 1, 2022 LUNG S 458 $25.91 $11,867 224,962 Direct -0.20% Disposed -91.0% (price as of 2026-08-20)
Dec. 15, 2021 LUNG S 10b5-1 24 $31.58 $758 225,420 Direct -0.01% Disposed -92.6% (price as of 2026-08-20)
Dec. 15, 2021 LUNG S 10b5-1 2,976 $30.52 $90,828 225,444 Direct -1.30% Disposed -92.4% (price as of 2026-08-20)
Dec. 14, 2021 LUNG S 10b5-1 3,000 $32.89 $98,670 228,420 Direct -1.30% Disposed -92.9% (price as of 2026-08-20)
Dec. 1, 2021 LUNG S 383 $32.73 $12,536 231,420 Direct -0.17% Disposed -92.9% (price as of 2026-08-20)
Sept. 21, 2021 LUNG S 10b5-1 3,000 $37.50 $112,500 231,803 Direct -1.28% Disposed -93.8% (price as of 2026-08-20)
Sept. 20, 2021 LUNG S 10b5-1 115 $37.96 $4,365 234,803 Direct -0.05% Disposed -93.9% (price as of 2026-08-20)
Sept. 20, 2021 LUNG S 10b5-1 2,885 $37.33 $107,697 234,918 Direct -1.21% Disposed -93.8% (price as of 2026-08-20)
Sept. 1, 2021 LUNG S 383 $40.09 $15,354 237,803 Direct -0.16% Disposed -94.2% (price as of 2026-08-20)
April 6, 2021 LUNG S 10b5-1 600 $48.33 $28,998 218,659 Direct -0.27% Disposed -95.2% (price as of 2026-08-20)
April 6, 2021 LUNG S 10b5-1 1,575 $47.79 $75,269 219,259 Direct -0.71% Disposed -95.1% (price as of 2026-08-20)
April 6, 2021 LUNG S 10b5-1 2,825 $46.49 $131,334 220,834 Direct -1.26% Disposed -95.0% (price as of 2026-08-20)
April 5, 2021 LUNG S 10b5-1 220 $48.56 $10,683 223,659 Direct -0.10% Disposed -95.2% (price as of 2026-08-20)
April 5, 2021 LUNG S 10b5-1 4,780 $47.56 $227,337 223,879 Direct -2.09% Disposed -95.1% (price as of 2026-08-20)
Jan. 30, 2019 IRTC S 10b5-1 2,000 $84.00 $168,000 25,258 Direct -7.34% Disposed 50.3% (price as of 2026-08-20)
Jan. 29, 2019 IRTC S 10b5-1 1,057 $84.03 $88,820 25,258 Direct -4.02% Disposed 50.2% (price as of 2026-08-20)
Jan. 28, 2019 IRTC S 10b5-1 9,068 $84.04 $762,075 25,258 Direct -26.42% Disposed 50.2% (price as of 2026-08-20)
Oct. 16, 2018 IRTC S 10b5-1 10,000 $88.01 $880,100 19,458 Direct -33.95% Disposed 43.4% (price as of 2026-08-20)
Oct. 9, 2018 IRTC S 10b5-1 10,000 $83.10 $831,000 19,458 Direct -33.95% Disposed 51.9% (price as of 2026-08-20)
Aug. 2, 2018 IRTC S 10b5-1 10,000 $82.01 $820,100 16,658 Direct -37.51% Disposed 53.9% (price as of 2026-08-20)
May 18, 2018 IRTC S 10b5-1 10,000 $70.00 $700,000 13,858 Direct -41.91% Disposed 80.3% (price as of 2026-08-20)

P = Open-market purchase · S = Sale · A = Grant/award · M = Option exercise · G = Gift · F = Tax withholding

Insider transactions are not a recommendation; sales are often driven by liquidity or tax reasons.

Derivative holdings (Form 4 Table II)

Options, RSUs and convertible securities reported on Form 4 Table II.

Date Ticker Security Underlying Exercise price Expiration Shares A/D
March 1, 2023 LUNG Employee Stock Option (right to buy) Common Stock (94,500) $11.48 Feb. 28, 2033 94,500 Acquired
Nov. 14, 2022 LUNG Employee Stock Option (right to buy) Common Stock (10,000) $2.20 Aug. 27, 2030 10,000 Disposed
March 1, 2022 LUNG Employee Stock Option (right to buy) Common Stock (68,700) $26.56 Feb. 29, 2032 68,700 Acquired
June 1, 2021 LUNG Employee Stock Option (right to buy) Common Stock (39,900) $43.40 May 31, 2031 39,900 Acquired
Jan. 30, 2019 IRTC Employee Stock Option (right to buy) Common Stock (2,000) $35.25 Feb. 16, 2027 2,000 Disposed
Jan. 29, 2019 IRTC Employee Stock Option (right to buy) Common Stock (1,057) $35.25 Feb. 16, 2027 1,057 Disposed
Jan. 28, 2019 IRTC Employee Stock Option (right to buy) Common Stock (6,000) $6.35 June 15, 2025 6,000 Disposed
Jan. 28, 2019 IRTC Employee Stock Option (right to buy) Common Stock (3,068) $35.25 Feb. 16, 2027 3,068 Disposed
Nov. 5, 2018 IRTC Employee Stock Option (right to buy) Common Stock (5,800) $6.35 June 15, 2025 5,800 Disposed
Oct. 16, 2018 IRTC Employee Stock Option (right to buy) Common Stock (10,000) $6.35 June 15, 2025 10,000 Disposed
Oct. 9, 2018 IRTC Employee Stock Option (right to buy) Common Stock (10,000) $6.35 June 15, 2025 10,000 Disposed
Sept. 18, 2018 IRTC Employee Stock Option (right to buy) Common Stock (2,800) $6.35 June 15, 2025 2,800 Disposed
Aug. 2, 2018 IRTC Employee Stock Option (right to buy) Common Stock (10,000) $6.35 June 15, 2025 10,000 Disposed
July 31, 2018 IRTC Employee Stock Option (right to buy) Common Stock (2,800) $6.35 June 15, 2025 2,800 Disposed
May 18, 2018 IRTC Employee Stock Option (right to buy) Common Stock (10,000) $6.35 June 15, 2025 10,000 Disposed
Feb. 27, 2018 IRTC Employee Stock Option (right to buy) Common Stock (8,000) $63.95 Feb. 27, 2028 8,000 Acquired
Feb. 16, 2017 IRTC Employee Stock Option (right to buy) Common Stock (14,000) $35.25 Feb. 16, 2027 14,000 Acquired

Exercise/conversion price is blank when not applicable (e.g. RSUs).

Initial ownership (Form 3) 4 holdings

Securities held when first becoming an insider, per SEC Form 3.

Date Ticker Security Shares Ownership
Nov. 10, 2025 LUNG Common Stock 135,319 Direct
Sept. 30, 2020 LUNG Common Stock 228,659 Direct
Sept. 30, 2020 LUNG Employee Stock Option (right to buy)→ Common Stock (15,000) 15,000 Direct
Oct. 19, 2016 IRTC Employee Stock Option (right to buy)→ Common Stock — Direct

Compensation (DEF 14A)

Matched by name from proxy statements (DEF 14A) — verify against the filing.

LUNG

CFO
Fiscal year Salary Bonus Stock awards Option awards Non-equity incentive Pension change Other Total
2025 $83,333 $200,000 $2,668,000 — — — $58 $2,951,391
2023 $357,500 — $1,584,240 $734,565 — — $555 $2,676,860

IRTC

Fiscal year Salary Bonus Stock awards Option awards Non-equity incentive Pension change Other Total
2016 $288,577 $20,000 — — $130,500 — — $439,077

Figures from the Summary Compensation Table of the company's proxy statement (DEF 14A). Compensation is not a recommendation.