Robert Yu Lang Mao

CIK 1232218 · View on SEC EDGAR ↗

Insider

First SEC filing: May 24, 2024 · Latest: May 24, 2024

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Insider at

Insider transactions

0 buys (P) 0 sells (S) Net: $0 + 67 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

67 other filings hidden
Date Ticker Code Shares Price Value Owned after Δ own A/D vs now
May 22, 2024 ERII S 21,045 $13.86 $291,684 236,099 Direct -8.18% Disposed -43.3% (price as of 2026-08-21)
March 4, 2024 ERII S 20,509 $15.74 $322,812 176,112 Direct -10.43% Disposed -50.1% (price as of 2026-08-21)
March 4, 2024 ERII S 15,270 $15.74 $240,350 176,169 Direct -7.98% Disposed -50.1% (price as of 2026-08-21)
March 1, 2024 ERII S 5,142 $16.22 $83,403 208,995 Direct -2.40% Disposed -51.5% (price as of 2026-08-21)
March 1, 2024 ERII S 32,883 $16.21 $533,033 176,112 Direct -15.73% Disposed -51.5% (price as of 2026-08-21)
Feb. 29, 2024 ERII S 39,314 $15.58 $612,512 176,112 Direct -18.25% Disposed -49.6% (price as of 2026-08-21)
Nov. 7, 2023 ERII S 121,383 $18.02 $2,187,322 104,604 Direct -53.71% Disposed -56.4% (price as of 2026-08-21)
Nov. 6, 2023 ERII S 130,000 $17.76 $2,308,800 66,096 Direct -66.29% Disposed -55.7% (price as of 2026-08-21)
Aug. 9, 2022 ERII S 2,000 $22.46 $44,920 0 Direct -100.00% Disposed -65.0% (price as of 2026-08-21)
Dec. 11, 2020 ERII S 9,500 $12.22 $116,090 217,611 Direct -4.18% Disposed -35.7% (price as of 2026-08-21)
March 14, 2017 ERII P 20,000 $7.53 $150,600 142,361 Direct +16.35% Acquired 4.4% (price as of 2026-08-21)
March 11, 2016 ERII P 40,000 $9.45 $378,000 97,361 Direct +69.73% Acquired -16.8% (price as of 2026-08-21)
May 21, 2014 ERII P 2,200 $4.58 $10,076 57,361 Direct +3.99% Acquired 71.6% (price as of 2026-08-21)
May 20, 2014 ERII P 47,800 $4.56 $217,968 55,161 Direct +649.37% Acquired 72.4% (price as of 2026-08-21)
June 14, 2011 ERII P 7,361 $2.67 $19,654 7,361 Indirect — Acquired 194.4% (price as of 2026-08-21)
June 14, 2011 ERII S 7,361 $2.67 $19,654 7,361 Indirect — Acquired 194.4% (price as of 2026-08-21)

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
May 23, 2024 ERII Employee Stock Option (Right to Buy) Common Stock (10,752) $7.79 May 20, 2030 10,752 Disposed
May 23, 2024 ERII Employee Stock Option (Right to Buy) Common Stock (2,084) $7.79 May 20, 2030 2,084 Disposed
May 22, 2024 ERII Employee Stock Option (Right to Buy) Common Stock (21,859) $7.79 May 20, 2030 21,859 Disposed
May 22, 2024 ERII Employee Stock Option (Right to Buy) Common Stock (5,208) $7.79 May 20, 2030 5,208 Disposed
March 4, 2024 ERII Stock Option (Right to Buy) Common Stock (20,509) $2.92 June 23, 2025 20,509 Disposed
March 4, 2024 ERII Stock Option (Right to Buy) Common Stock (16,726) $7.71 June 22, 2027 16,726 Disposed
March 4, 2024 ERII Stock Option (Right to Buy) Common Stock (15,879) $8.49 June 14, 2028 15,879 Disposed
March 4, 2024 ERII Stock Option (Right to Buy) Common Stock (21,303) $9.98 June 13, 2029 21,303 Disposed
March 4, 2024 ERII Stock Option (Right to Buy) Common Stock (15,327) $8.60 June 23, 2026 15,327 Disposed
March 1, 2024 ERII Stock Option (Right to Buy) Common Stock (5,142) $3.53 Feb. 6, 2025 5,142 Disposed
March 1, 2024 ERII Stock Option (Right to Buy) Common Stock (32,883) $2.92 June 23, 2025 32,883 Disposed
Feb. 29, 2024 ERII Stock Option (Right to Buy) Common Stock (39,314) $3.53 Feb. 6, 2025 39,314 Disposed
Nov. 8, 2023 ERII Employee Stock Option (Right to Buy) Common Stock (26,662) $7.79 May 20, 2030 26,662 Disposed
Nov. 8, 2023 ERII Employee Stock Option (Right to Buy) Common Stock (38,540) $7.79 May 20, 2030 38,540 Disposed
Nov. 8, 2023 ERII Employee Stock Option (Right to Buy) Common Stock (6,306) $13.96 Feb. 1, 2031 6,306 Disposed
Nov. 7, 2023 ERII Employee Stock Option (Right to Buy) Common Stock (34,340) $7.79 May 20, 2030 34,340 Disposed
Nov. 7, 2023 ERII Employee Stock Option (Right to Buy) Common Stock (4,168) $7.79 May 20, 2030 4,168 Disposed
Nov. 7, 2023 ERII Employee Stock Option (Right to Buy) Common Stock (121,383) $13.96 Feb. 1, 2031 121,383 Disposed
Nov. 6, 2023 ERII Employee Stock Option (Right to Buy) Common Stock (130,000) $7.79 May 20, 2030 130,000 Disposed
Aug. 10, 2022 ERII Stock Option (Right to Buy) Common Stock (15,236) $5.43 Sept. 3, 2023 15,236 Disposed
Aug. 9, 2022 ERII Stock Option (Right to Buy) Common Stock (2,000) $5.43 Sept. 3, 2023 2,000 Disposed
Jan. 28, 2022 ERII Employee Stock Option (Right to Buy) Common Stock (135,281) $18.99 Jan. 28, 2032 135,281 Acquired
Feb. 1, 2021 ERII Employee Stock Option (Right to Buy) Common Stock (191,534) $13.96 Feb. 1, 2031 191,534 Acquired
Dec. 11, 2020 ERII Stock Option (Right to Buy) Common Stock (45,708) $2.49 Aug. 15, 2022 45,708 Disposed
May 20, 2020 ERII Employee Stock Option (Right to Buy) Common Stock (223,613) $7.79 May 20, 2030 223,613 Acquired
May 20, 2020 ERII Employee Stock Option (Right to Buy) Common Stock (50,000) $7.79 May 20, 2030 50,000 Acquired
June 13, 2019 ERII Stock Option (Right to Buy) Common Stock (21,303) $9.98 June 13, 2029 21,303 Disposed
May 15, 2019 ERII Stock Option (Right to Buy) Common Stock (39,042) $2.61 Sept. 16, 2021 39,042 Disposed
June 14, 2018 ERII Stock Option (Right to Buy) Common Stock (15,879) $8.49 June 14, 2028 15,879 Acquired
June 14, 2018 ERII Stock Option (Right to Buy) Common Stock (15,879) $8.49 June 14, 2028 15,879 Acquired
June 22, 2017 ERII Stock Option (Right to Buy) Common Stock (16,726) $7.71 June 22, 2027 16,726 Acquired
June 23, 2016 ERII Stock Option (Right to Buy) Common Stock (15,327) $8.60 June 23, 2026 15,327 Acquired
May 11, 2016 ERII Stock Option (Right to Buy) Common Stock (25,000) $3.45 Sept. 15, 2020 25,000 Disposed
June 23, 2015 ERII Stock Option (Right to Buy) Common Stock (53,392) $2.92 June 23, 2025 53,392 Acquired
Feb. 6, 2015 ERII Stock Option (Right to Buy) Common Stock (44,456) $3.53 Feb. 6, 2025 44,456 Acquired
Sept. 3, 2013 ERII Stock Option (Right to Buy) Common Stock (17,236) $5.43 June 17, 2023 17,236 Acquired
Aug. 15, 2012 ERII Stock Option (Right to Buy) Common Stock (45,708) $2.49 Aug. 14, 2022 45,708 Acquired
Sept. 16, 2010 ERII Employee Stock Option (Right to Buy) Common Stock (25,000) $3.45 Sept. 15, 2020 25,000 Acquired

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

Compensation (DEF 14A)

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

ERII

Fiscal year Salary Bonus Stock awards Option awards Non-equity incentive Pension change Other Total
2022 $534,016 — — $999,997 $473,454 — $25,698 $2,033,165
2021 $514,423 — — $1,000,771 $463,500 — $28,239 $2,006,934
2020 $481,539 — — — $381,473 — — $2,092,007

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